{"id":352,"date":"2023-01-02T21:18:05","date_gmt":"2023-01-02T13:18:05","guid":{"rendered":"https:\/\/site.uugo.cf\/?p=352"},"modified":"2023-01-02T21:18:28","modified_gmt":"2023-01-02T13:18:28","slug":"x264","status":"publish","type":"post","link":"https:\/\/site.uugo.cf\/?p=352","title":{"rendered":"X264\u53c2\u6570\u89e3\u8bf4"},"content":{"rendered":"\n<p>\u9274\u4e8ex264\u7684\u53c2\u6570\u4f17\u591a\uff0c\u5404\u79cd\u53c2\u6570\u7684\u914d\u5408\u590d\u6742\uff0c\u4e3a\u4e86\u4f7f\u7528\u8005\u65b9\u4fbf\uff0cx264\u5efa\u8bae\u5982\u65e0\u7279\u522b\u9700\u8981\u53ef\u4f7f\u7528preset\u548ctune\u8bbe\u7f6e\u3002\u8fd9\u5957\u5f00\u53d1\u8005\u63a8\u8350\u7684\u53c2\u6570\u8f83\u4e3a\u5408\u7406\uff0c\u53ef\u5728\u6b64\u57fa\u7840\u4e0a\u5728\u8c03\u6574\u4e00\u4e9b\u5177\u4f53\u53c2\u6570\u4ee5\u7b26\u5408\u81ea\u5df1\u9700\u8981\uff0c\u624b\u52a8\u8bbe\u5b9a\u7684\u53c2\u6570\u4f1a\u8986\u76d6preset\u548ctune\u91cc\u7684\u53c2\u6570\u3002<\/p>\n\n\n\n<p>&#8211;preset\u7684\u53c2\u6570\u4e3b\u8981\u8c03\u8282\u7f16\u7801\u901f\u5ea6\u548c\u8d28\u91cf\u7684\u5e73\u8861\uff0c\u6709ultrafast\u3001superfast\u3001veryfast\u3001faster\u3001fast\u3001medium\u3001slow\u3001slower\u3001veryslow\u3001placebo\u8fd910\u4e2a\u9009\u9879\uff0c\u4ece\u5feb\u5230\u6162\u3002<\/p>\n\n\n\n<p>&#8211;tune\u7684\u53c2\u6570\u4e3b\u8981\u914d\u5408\u89c6\u9891\u7c7b\u578b\u548c\u89c6\u89c9\u4f18\u5316\u7684\u53c2\u6570\uff0c\u6216\u7279\u522b\u7684\u60c5\u51b5\u3002\u5982\u679c\u89c6\u9891\u7684\u5185\u5bb9\u7b26\u5408\u5176\u4e2d\u4e00\u4e2a\u53ef\u7528\u7684\u8c03\u6574\u503c\u53c8\u6216\u8005\u6709\u5176\u4e2d\u9700\u8981\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u6b64\u9009\u9879\uff0c\u5426\u5219\u5efa\u8bae\u4e0d\u4f7f\u7528\uff08\u5982tune grain\u662f\u4e3a\u9ad8\u6bd4\u7279\u7387\u7684\u7f16\u7801\u800c\u8bbe\u8ba1\u7684\uff09\u3002<br>tune\u7684\u503c\u6709\uff1a film\uff1a \u7535\u5f71\u3001\u771f\u4eba\u7c7b\u578b\uff1b<br>animation\uff1a \u52a8\u753b\uff1b<br>grain\uff1a \u9700\u8981\u4fdd\u7559\u5927\u91cf\u7684grain\u65f6\u7528\uff1b<br>stillimage\uff1a \u9759\u6001\u56fe\u50cf\u7f16\u7801\u65f6\u4f7f\u7528\uff1b<br>psnr\uff1a \u4e3a\u63d0\u9ad8psnr\u505a\u4e86\u4f18\u5316\u7684\u53c2\u6570\uff1b<br>ssim\uff1a \u4e3a\u63d0\u9ad8ssim\u505a\u4e86\u4f18\u5316\u7684\u53c2\u6570\uff1b<br>fastdecode\uff1a \u53ef\u4ee5\u5feb\u901f\u89e3\u7801\u7684\u53c2\u6570\uff1b<br>zerolatency\uff1a\u96f6\u5ef6\u8fdf\uff0c\u7528\u5728\u9700\u8981\u975e\u5e38\u4f4e\u7684\u5ef6\u8fdf\u7684\u60c5\u51b5\u4e0b\uff0c\u6bd4\u5982\u7535\u89c6\u7535\u8bdd\u4f1a\u8bae\u7684\u7f16\u7801\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u76ee\u5f55-\">\u76ee\u5f55\uff1a<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>x264\u53c2\u6570\u4ecb\u7ecd\uff08\u4e00\u3001\u5e27\u7c7b\u578b\u548c\u7801\u7387\u63a7\u5236\uff09<\/li>\n\n\n\n<li>x264\u53c2\u6570\u4ecb\u7ecd\uff08\u4e8c\u3001\u5206\u6790\u548c\u89c6\u9891\u53ef\u7528\u6027\u4fe1\u606f\uff09<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"x264\u53c2\u6570\u4ecb\u7ecd-\u4e00-\u5e27\u7c7b\u578b\u548c\u7801\u7387\u63a7\u5236-\">x264\u53c2\u6570\u4ecb\u7ecd\uff08\u4e00\u3001\u5e27\u7c7b\u578b\u548c\u7801\u7387\u63a7\u5236\uff09<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"\u8f93\u5165\">\u8f93\u5165<\/h1>\n\n\n\n<p>\u75281\u4e2a\u7edd\u5bf9\u8def\u5f84\u5b9a\u4e49\u8f93\u5165\u6587\u4ef6\uff08\u6216\u80052\u4e2a\uff0crawYUV\u6587\u4ef6\uff09\u3002\u5982\u4e0b\u4f8b\uff1a<br>x264.exe -o NUL C:\\input.avs<br>x264 -o \/dev\/null ~\/input.y4m<br>\u5982\u679c\u8f93\u5165\u6587\u4ef6\u662frawYUV\u683c\u5f0f\u7684\uff0c\u8fd8\u8981\u628a\u5206\u8fa8\u7387\u4e00\u5e76\u8f93\u5165\u3002\u5982\u679c\u5f00\u542f\u4e86\u6bd4\u7279\u7387\u63a7\u5236\uff0c\u8fd8\u9700\u8981\u8f93\u5165\u5e27\u7387\u3002\u5982\u4e0b\u4f8b\uff1a<br>x264.exe -o NUL \u2013fps 25 D:\\input.yuv 1280\u00d7720<br>x264 -o \/dev\/null \u2013fps 30000\/1001 ~\/input.yuv 640\u00d7480<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"\u9884\u8bbe\u503c\">\u9884\u8bbe\u503c<\/h1>\n\n\n\n<p>\u9884\u8bbe\u503c\u662fx264\u5728r1177\u7248\u672c\u589e\u52a0\u7684\u4e00\u4e2a\u65b9\u4fbf\u7684\u547d\u4ee4\u884c\u9009\u9879\u3002\u53ef\u4ee5\u7528x264.exe \u2013fullhelp\u67e5\u770b\u6240\u6709\u7684\u547d\u4ee4\u884c\u5e2e\u52a9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"profile\">profile<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u9650\u5236\u8f93\u51fa\u6587\u4ef6\u7684profile\u3002\u8fd9\u4e2a\u53c2\u6570\u5c06\u8986\u76d6\u5176\u5b83\u6240\u6709\u503c\uff0c\u6b64\u9009\u9879\u80fd\u4fdd\u8bc1\u8f93\u51faprofile\u517c\u5bb9\u7684\u89c6\u9891\u6d41\u3002\u5982\u679c\u4f7f\u7528\u4e86\u8fd9\u4e2a\u9009\u9879\uff0c\u5c06\u4e0d\u80fd\u8fdb\u884c\u65e0\u635f\u538b\u7f29\uff08qp 0 or crf 0\uff09\u3002<br>\u53ef\u9009\uff1abaseline\uff0cmain\uff0chigh<br>\u5efa\u8bae\uff1a\u4e0d\u8bbe\u7f6e\u3002\u9664\u975e\u89e3\u7801\u73af\u5883\u53ea\u652f\u6301main\u6216\u8005baseline profile\u7684\u89e3\u7801\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"preset\">preset<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1amedium<br>\u4e00\u4e9b\u5728\u538b\u7f29\u6548\u7387\u548c\u8fd0\u7b97\u65f6\u95f4\u4e2d\u5e73\u8861\u7684\u9884\u8bbe\u503c\u3002\u5982\u679c\u6307\u5b9a\u4e86\u4e00\u4e2a\u9884\u8bbe\u503c\uff0c\u5b83\u4f1a\u5728\u5176\u5b83\u9009\u9879\u751f\u6548\u524d\u751f\u6548\u3002<br>\u53ef\u9009\uff1aultrafast, superfast, veryfast, faster, fast, medium, slow, slower, veryslow and placebo.<br>\u5efa\u8bae\uff1a\u53ef\u63a5\u53d7\u7684\u6700\u6162\u7684\u503c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tune\">tune<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5728\u4e0a\u4e00\u4e2a\u9009\u9879\u57fa\u7840\u4e0a\u8fdb\u4e00\u6b65\u4f18\u5316\u8f93\u5165\u3002\u5982\u679c\u5b9a\u4e49\u4e86\u4e00\u4e2atune\u503c\uff0c\u5b83\u5c06\u5728preset\u4e4b\u540e\uff0c\u5176\u5b83\u9009\u9879\u4e4b\u524d\u751f\u6548\u3002<br>\u53ef\u9009\uff1afilm, animation, grain, stillimage, psnr, ssim, fastdecode, zerolatency and touhou.<br>\u5efa\u8bae\uff1a\u6839\u636e\u8f93\u5165\u9009\u62e9\u3002\u5982\u679c\u6ca1\u6709\u5408\u9002\u7684\u5c31\u4e0d\u8981\u6307\u5b9a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"slow-firstpass\">slow-firstpass<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u968f\u7740\u9884\u8bbe\u503c\u673a\u5236\u5728r1177\u7248\u672c\u7684\u51fa\u73b0\uff0c\u4f7f\u7528\u2013pass 1\u4f1a\u5728\u89e3\u6790\u547d\u4ee4\u884c\u65f6\u589e\u52a0\u4ee5\u4e0b\u8bbe\u7f6e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ref 1<\/li>\n\n\n\n<li>no-8x8dct<\/li>\n\n\n\n<li>partitions i4x4 (if originally enabled, else none)<\/li>\n\n\n\n<li>me dia<\/li>\n\n\n\n<li>subme MIN( 2, subme )<\/li>\n\n\n\n<li>trellis 0<br>\u5982\u679c\u8bbe\u7f6epreset=placebo\u5219\u81ea\u52a8\u5173\u95ed\u6b64\u7279\u6027\u3002\u5982\u679c\u60f3\u663e\u5f0f\u5173\u95ed\u6b64\u7279\u6027\uff0c\u4f7f\u7528slow-firstpass\u3002<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"\u5e27\u7c7b\u578b\">\u5e27\u7c7b\u578b<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"keyint\">keyint<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a250<br>\u8bf4\u660e\uff1a\u8bbe\u7f6ex264\u8f93\u51fa\u4e2d\u6700\u5927\u7684IDR\u5e27\uff08\u4ea6\u79f0\u5173\u952e\u5e27\uff09\u95f4\u8ddd\u3002<br>IDR\u5e27\u662f\u89c6\u9891\u6d41\u7684\u201c\u5206\u9694\u7b26\u201d\uff0c\u6240\u6709\u5e27\u90fd\u4e0d\u53ef\u4ee5\u4f7f\u7528\u8d8a\u8fc7\u5173\u952e\u5e27\u7684\u5e27\u4f5c\u4e3a\u53c2\u8003\u5e27\u3002IDR\u5e27\u662fI\u5e27\u7684\u4e00\u79cd\uff0c\u6240\u4ee5\u5b83\u4eec\u4e5f\u4e0d\u53c2\u7167\u5176\u5b83\u5e27\u3002\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u53ef\u4ee5\u4f5c\u4e3a\u89c6\u9891\u7684\u641c\u7d22\uff08seek\uff09\u70b9\u3002<br>\u901a\u8fc7\u8fd9\u4e2a\u8bbe\u7f6e\u53ef\u4ee5\u8bbe\u7f6eIDR\u5e27\u7684\u6700\u5927\u95f4\u9694\u5e27\u6570\uff08\u4ea6\u79f0\u6700\u5927\u56fe\u50cf\u7ec4\u957f\u5ea6\uff09\u3002\u8f83\u5927\u7684\u503c\u5c06\u5bfc\u81f4IDR\u5e27\u51cf\u5c11\uff08\u4f1a\u7528\u5360\u7528\u7a7a\u95f4\u66f4\u5c11\u7684P\u5e27\u548cB\u5e27\u53d6\u4ee3\uff09\uff0c\u4e5f\u5c31\u540c\u65f6\u51cf\u5f31\u4e86\u53c2\u7167\u5e27\u9009\u62e9\u7684\u9650\u5236\u3002\u8f83\u5c0f\u7684\u503c\u5bfc\u81f4\u51cf\u5c11\u641c\u7d22\u4e00\u4e2a\u968f\u673a\u5e27\u6240\u9700\u7684\u5e73\u5747\u65f6\u95f4\u3002<br>\u5efa\u8bae\uff1a\u9ed8\u8ba4\u503c\uff08fps\u768410\u500d\uff09\u5bf9\u5927\u591a\u6570\u89c6\u9891\u90fd\u5f88\u597d\u3002\u5982\u679c\u5728\u4e3a\u84dd\u5149\u3001\u5e7f\u64ad\u3001\u76f4\u64ad\u6d41\u6216\u8005\u5176\u5b83\u4ec0\u4e48\u4e13\u4e1a\u6d41\u7f16\u7801\uff0c\u4e5f\u8bb8\u4f1a\u9700\u8981\u66f4\u5c0f\u7684\u56fe\u50cf\u7ec4\u957f\u5ea6\uff08\u4e00\u822c\u7b49\u4e8efps\uff09\u3002<br>\u53c2\u89c1\uff1amin-keyint, scenecut, intra-refresh<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"min-keyint\">min-keyint<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aauto\uff08keyint\/10\uff09<br>\u8bf4\u660e\uff1a\u53c2\u89c1keyint\u7684\u8bf4\u660e\u3002\u8fc7\u5c0f\u7684keyint\u8303\u56f4\u4f1a\u5bfc\u81f4\u4ea7\u751f\u201c\u9519\u8bef\u7684\u201dIDR\u5e27\uff08\u6bd4\u5982\u8bf4\uff0c\u4e00\u4e2a\u95ea\u5c4f\u573a\u666f\uff0c\u53c2\u89c1\u4e0a\u4e00\u7bc7blog\uff09\u3002\u6b64\u9009\u9879\u9650\u5236\u4e86IDR\u5e27\u4e4b\u95f4\u7684\u6700\u5c0f\u8ddd\u79bb\u3002<br>\u5efa\u8bae\uff1a\u9ed8\u8ba4\uff0c\u6216\u8005\u4e0efps\u76f8\u7b49<br>\u53c2\u89c1\uff1akeyint, scenecut<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-scenecut\">no-scenecut<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5b8c\u5168\u5173\u95ed\u81ea\u9002\u5e94I\u5e27\u51b3\u7b56\u3002<br>\u53c2\u89c1\uff1ascenecut<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"scenecut\">scenecut<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a40<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u51b3\u7b56\u4f7f\u7528I\u5e27\u3001IDR\u5e27\u7684\u9608\u503c\uff08\u573a\u666f\u53d8\u6362\u68c0\u6d4b\uff09\u3002<br>x264\u4f1a\u8ba1\u7b97\u6bcf\u4e00\u5e27\u4e0e\u524d\u4e00\u5e27\u7684\u4e0d\u540c\u7a0b\u5ea6\u5e76\u5f97\u51fa\u4e00\u4e2a\u503c\u3002\u5982\u679c\u8fd9\u4e2a\u503c\u4f4e\u4e8escenecut\uff0c\u90a3\u4e48\u5c31\u7b97\u68c0\u6d4b\u5230\u4e00\u4e2a\u201c\u573a\u666f\u53d8\u6362\u201d\u3002\u5982\u679c\u6b64\u65f6\u8ddd\u79bb\u4e0a\u4e00\u5e27\u7684\u8ddd\u79bb\u5c0f\u4e8e min-keyint\u5219\u63d2\u5165\u4e00\u4e2aI\u5e27\uff0c\u53cd\u4e4b\u5219\u63d2\u5165\u4e00\u4e2aIDR\u5e27\u3002\u8f83\u9ad8\u7684\u503c\u4f1a\u589e\u52a0\u4fa6\u6d4b\u5230\u201c\u573a\u666f\u53d8\u6362\u201d\u7eaa\u5f8b\u3002<br>\u8bbe\u7f6escenecut=0\u4e0eno-scenecut\u7b49\u6548\u3002<br>\u5efa\u8bae\uff1a\u4f7f\u7528\u9ed8\u8ba4\u503c<br>\u53c2\u89c1\uff1akeyint, min-keyint, no-scenecut<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"intra-refresh\">intra-refresh<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aoff<br>\u8bf4\u660e\uff1a\u8ba9x264\u4e3a\u6bcfkeyint\u6570\u91cf\u7684\u5e27\u4f7f\u7528\u5b8f\u5757\u5185\u90e8\u7f16\u7801\u53d6\u4ee3IDR\u5e27\u3002\u5757\u4ee5\u6c34\u5e73\u79fb\u52a8\u5217\u7684\u65b9\u5f0f\u66f4\u65b0\uff0c\u4e5f\u53eb\u5237\u65b0\u6ce2\u3002\u5bf9\u4e8e\u4f4e\u5ef6\u8fdf\u7684\u6d41\uff0c\u8fd9\u6837\u53ef\u4ee5\u8ba9\u5e27\u7684\u5c3a\u5bf8\u6bd4\u4f7f\u7528\u6807\u51c6\u7684IDR\u5e27\u66f4\u52a0\u4fdd\u6301\u6052\u5b9a\u3002\u800c\u4e14\u8fd9\u6837\u53ef\u4ee5\u589e\u5f3a\u89c6\u9891\u6d41\u5bf9\u4e22\u5305\u7684\u5bb9\u9519\u80fd\u529b\u3002\u8fd9\u4e2a\u9009\u9879\u4f1a\u964d\u4f4e\u538b\u7f29\u7387\uff0c\u6240\u4ee5\u5728\u786e\u5b9e\u9700\u8981\u7684\u65f6\u5019\u624d\u9009\u62e9\u5b83\u3002<br>\u8fd8\u6709\u4e00\u4e9b\u6709\u610f\u601d\u7684\u4e8b\u60c5\uff1a1\u3001\u7b2c\u4e00\u5e27\u4f9d\u7136\u662fIDR\u5e27\u30022\u3001\u5185\u90e8\u5b8f\u5757\u53ea\u5728P\u5e27\u4e2d\u5b58\u5728\uff0c\u5237\u65b0\u6ce2\u5728\u4e00\u4e2a\u6216\u591a\u4e2aB\u5e27\u540e\u7684P\u5e27\u4e2d\u5e7f\u6cdb\u5b58\u5728\u30023\u3001\u4e3b\u8981\u7684\u538b\u7f29\u7387\u4e0b\u964d\u539f\u56e0\u662f\u5728\u5b8f\u5757\u4e2d\u65b0\uff08\u5de6\u8fb9\uff09\u7684\u6ce2\u5e76\u4e0d\u80fd\u53c2\u8003\u65e7\uff08\u53f3\u8fb9\uff09\u7684\u6ce2\u3002<br>\u5efa\u8bae\uff1a\u4f7f\u7528\u9ed8\u8ba4\u503c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bframes\">bframes<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a3<br>\u8bf4\u660e\uff1a\u8bbe\u7f6ex264\u53ef\u4f7f\u7528\u7684B\u5e27\u7684\u6700\u5927\u8fde\u7eed\u6570\u91cf\u3002<br>\u6ca1\u6709B\u5e27\u65f6\uff0c\u4e00\u4e2a\u5178\u578b\u7684x264\u6d41\u5e27\u7c7b\u578b\u662f\u8fd9\u6837\u7684\uff1aIPPPPP\u2026PI\u3002\u5982\u679c\u8bbe\u7f6e\u4e86-bframes 2\uff0c\u90a3\u4e48\u4e24\u4e2a\u8fde\u7eed\u7684P\u5e27\u5c31\u53ef\u4ee5\u7528B\u5e27\u66ff\u6362\uff0c\u7136\u540e\u5c31\u50cf\u8fd9\u6837\uff1aIBPBBPBPPPB\u2026PI\u3002<br>B\u5e27\u548cP\u5e27\u7684\u533a\u522b\u5728\u4e8e\u5b83\u53ef\u4ee5\u53c2\u7167\u5b83\u4e4b\u540e\u7684\u5e27\uff0c\u8fd9\u4e2a\u7279\u70b9\u8ba9\u5b83\u53ef\u4ee5\u663e\u8457\u5730\u63d0\u5347\u538b\u7f29\u7387\u3002\u4ed6\u4eec\u7684\u5e73\u5747\u54c1\u8d28\u53d7 \u2013pbratio\u9009\u9879\u7684\u63a7\u5236\u3002<br>\u8fd8\u6709\u4e00\u4e9b\u6709\u610f\u601d\u7684\u4e8b\u60c5\uff1a<br>1\u3001x264\u67092\u79cdB\u5e27\uff0c\u4e00\u79cd\u53ef\u4ee5\u4f5c\u4e3a\u53c2\u7167\u5e27\uff0c\u4e00\u79cd\u4e0d\u80fd\uff1b<br>2\u3001\u5173\u4e8ex264\u5982\u4f55\u51b3\u7b56B\u5e27\u6216P\u5e27\uff0c\u53ef\u4ee5\u770b\u770b\u8fd9\u4e2affmpeg-devel\u90ae\u4ef6\u5217\u8868\u4e2d\u7684\u8fd9\u4e00\u5c01<a href=\"http:\/\/article.gmane.org\/\">http:\/\/article.gmane.org<\/a>&nbsp;\/gmane.comp.video.ffmpeg.devel\/29064\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5e27\u7c7b\u578b\u770b\u8d77\u6765\u5c31\u50cf\u8fd9\u6837IBBBPBBBPBPI\uff08\u5047\u8bbe\u8bbe\u7f6e \u2013bframes 3\uff09\u3002<br>\u53c2\u89c1\uff1a\u2013no-b-adapt, \u2013b-bias, \u2013b-pyramid, \u2013ref, \u2013pbratio, \u2013partitions, \u2013weightb<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"b-adapt\">b-adapt<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a1<br>\u8bf4\u660e\uff1a\u8bbe\u7f6eB\u5e27\u51b3\u7b56\u7b97\u6cd5\uff0c\u8fd9\u4e2a\u9009\u9879\u4f1a\u5f71\u54cd\u5230x264\u4f7f\u7528P\u5e27\u6216\u8005B\u5e27\u3002<br>0 \u2014\u2014 \u5173\u95ed\u3002\u603b\u662f\u4f7f\u7528B\u5e27\u3002\u548c\u4ee5\u524d\u7684 no-b-adapt\u9009\u9879\u6548\u679c\u76f8\u540c\uff1b<br>1 \u2014\u2014 \u2018\u5feb\u901f\u2019\u7b97\u6cd5\u3002\u5feb\u901f\uff0c\u2013b-frames\u8d8a\u5927\u901f\u5ea6\u8d8a\u5feb\u3002\u63a8\u8350\u914d\u5408\u4f7f\u7528\u2013bframes 16\uff1b<br>2 \u2014\u2014 \u2018\u6700\u4f73\u2019\u7b97\u6cd5\uff0c\u6162\u901f\uff0c\u2013b-frames\u8d8a\u5927\u901f\u5ea6\u8d8a\u6162\uff1b<br>\u6ce8\u610f\uff1a\u591a\u8d9f\u7f16\u7801\u65f6\uff0c\u53ea\u6709\u7b2c\u4e00\u8d9f\u7f16\u7801\u7684\u6b64\u9009\u9879\u8d77\u6548\uff0c\u56e0\u4e3a\u7b2c\u4e00\u8d9f\u7f16\u7801\u7ed3\u675f\u65f6\uff0c\u5e27\u7c7b\u578b\u5c31\u5df2\u7ecf\u88ab\u51b3\u5b9a\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"b-bias\">b-bias<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0<br>\u8bf4\u660e\uff1a\u8c03\u8282\u4f7f\u7528B\u5e27\u7684\u529b\u5ea6\u3002\u8d8a\u5927\u7684\u503c\u8d8a\u504f\u5411B\u5e27\uff0c\u53ef\u4ee5\u5728-100\u548c100\u4e4b\u95f4\u9009\u62e9\u3002100\u6216-100\u4e0d\u80fd\u4fdd\u8bc1\u5b8c\u5168\u6216\u662f\u5168\u662fB\u5e27\uff08\u4f7f\u7528 \u2013b-adapt 0\uff09\u3002<br>\u8bf7\u53ea\u5728\u4f60\u8ba4\u4e3a\u4f60\u80fd\u505a\u51fa\u6bd4x264\u66f4\u597d\u7684\u7801\u7387\u63a7\u5236\u65f6\u624d\u4f7f\u7528\u8fd9\u4e2a\u9009\u9879\u3002<br>\u53c2\u89c1\uff1a \u2013b-frames, \u2013ipratio<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"b-pyramid\">b-pyramid<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1anormal<br>\u8bf4\u660e\uff1a\u5141\u8bb8B\u5e27\u4f5c\u4e3a\u53c2\u7167\u5e27\u3002\u5982\u679c\u5173\u95ed\uff0c\u90a3\u4e48\u53ea\u6709I\u5e27\u548cP\u5e27\u624d\u80fd\u4f5c\u4e3a\u53c2\u7167\u5e27\u3002\u53ef\u4ee5\u4f5c\u4e3a\u53c2\u7167\u5e27\u7684B\u5e27\u7684\u91cf\u5316\u53c2\u6570\u4f1a\u4ecb\u4e8eP\u5e27\u548c\u666e\u901aB\u5e27\u4e4b\u95f4\u3002\u53ea\u5728\u2013b-frames\u8bbe\u7f6e\u5927\u4e8e\u7b49\u4e8e2\u65f6\u6b64\u9009\u9879\u624d\u751f\u6548\u3002\u5982\u679c\u662f\u5728\u4e3a\u84dd\u5149\u5149\u76d8\u7f16\u7801\uff0c\u8bf7\u4f7f\u7528none\u6216\u8005strict\u3002<br>none \u2014\u2014 \u4e0d\u5141\u8bb8B\u5e27\u4f5c\u4e3a\u53c2\u7167\u5e27\uff1b<br>strict \u2014\u2014 \u4e00\u4e2a\u56fe\u50cf\u7ec4\u5185\u53ea\u5141\u8bb8\u4e00\u4e2aB\u5e27\u53c2\u7167\u5e27\uff0c\u8fd9\u662f\u84dd\u5149\u7f16\u7801\u5f3a\u5236\u8981\u6c42\u7684\u6807\u51c6\uff1b<br>normal \u2014\u2014 \u4efb\u610f\u4f7f\u7528B\u5e27\u53c2\u7167\u5e27\uff1b<br>\u53c2\u89c1\uff1a\u2013bframes, \u2013refs, \u2013no-mixed-refs<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"open-gop\">open-gop<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1anone<br>\u8bf4\u660e\uff1aOpen-GOP\u662f\u4e00\u4e2a\u63d0\u5347\u538b\u7f29\u6548\u7387\u7684\u7f16\u7801\u6280\u672f\u3002\u5b83\u6709\u4ee5\u4e0b\u9009\u9879\uff1a<br>none \u2014\u2014 \u5173\u95ed<br>normal \u2014\u2014 \u5f00\u542f<br>bluray \u2014\u2014 \u5f00\u542f\u3002\u4e00\u4e2a\u7a0d\u4f4e\u6548\u7684open-GOP\u7248\u672c\uff0c\u56e0\u4e3anormal\u6a21\u5f0f\u4e0d\u80fd\u7528\u4e8e\u84dd\u5149\u7f16\u7801<br>\u6709\u4e9b\u89e3\u7801\u5668\u4e0d\u80fd\u5b8c\u5168\u652f\u6301open-GOP\u6d41\uff0c\u56e0\u6b64\u8fd9\u4e2a\u9009\u9879\u9ed8\u8ba4\u5173\u95ed\u3002\u5982\u679c\u8981\u7528\uff0c\u8bf7\u6d4b\u8bd5\u4f60\u7684\u89e3\u7801\u5668\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-cabac\">no-cabac<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5173\u95edCABAC (Context Adaptive Binary Arithmetic Coder)\u538b\u7f29\uff0c\u4f7f\u7528\u8f83\u4e3a\u4f4e\u6548\u7684CAVLC (Context Adaptive Variable Length Coder)\u3002\u8fd9\u4e24\u8005\u5728\u538b\u7f29\u6548\u7387\u548c\u89e3\u7801\u6548\u7387\u4e0a\u670910%-20%\u7684\u5dee\u522b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"ref\">ref<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a3<br>\u8bf4\u660e\uff1a\u63a7\u5236DPB (Decoded Picture Buffer)\u7684\u5927\u5c0f\u3002\u53ef\u4ee5\u57280-16\u4e4b\u95f4\u9009\u62e9\u3002\u7b80\u5355\u5730\u8bf4\uff0c\u5c31\u662f\u8bbe\u7f6eP\u5e27\u53ef\u4ee5\u9009\u62e9\u5b83\u4e4b\u524d\u7684\u591a\u5c11\u5e27\u4f5c\u4e3a\u53c2\u7167\u5e27\uff08B\u5e27\u7684\u503c\u8981\u5c0f1-2\uff0c\u53d6\u51b3\u4e8e\u90a3\u4e2aB\u5e27\u80fd\u4e0d\u80fd\u4f5c\u4e3a\u53c2\u7167\uff09\u3002\u6700\u5c0f\u53ef\u4ee5\u9009\u62e9\u503c1\uff0c\u53ea\u53c2\u7167\u81ea\u5df1\u524d\u9762\u7684\u90a3\u5e27\u3002<br>\u6ce8\u610fH.264\u6807\u51c6\u9650\u5236\u4e86\u6bcf\u4e2alevel\u53ef\u4ee5\u53c2\u7167\u7684\u5e27\u7684\u6570\u91cf\u3002\u5982\u679c\u9009\u62e9level4.1\uff0c1080p\u6700\u5927\u90094\uff0c720p\u6700\u5927\u90099\u3002<br>\u53c2\u7167\uff1a \u2013b-pyramid, \u2013no-mixed-refs, \u2013level<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-deblock\">no-deblock<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5b8c\u5168\u5173\u95ed\u5185\u7f6e\u53bb\u5757\u6ee4\u955c\u3002\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<br>\u53c2\u89c1\uff1a \u2013deblock<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"deblock\">deblock<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0:0<br>\u8bf4\u660e\uff1a\u8c03\u8282H.264\u6807\u51c6\u4e2d\u7684\u5185\u7f6e\u53bb\u5757\u6ee4\u955c\u3002\u8fd9\u662f\u4e2a\u6027\u4ef7\u6bd4\u5f88\u9ad8\u7684\u9009\u5219\u3002<br>\u8be6\u7ec6\u7684\u53c2\u6570\u8fd0\u4f5c\u539f\u7406\u53ef\u4ee5\u770b\u8fd9\u7bc7\u6587\u7ae0<a href=\"http:\/\/forum.doom9.org\/showthread.php?t=109747\">http:\/\/forum.doom9.org\/showthread.php?t=109747<\/a>\uff08\u770b\u697c\u4e3b\u548cakupenguin\u7684\u56de\u590d\uff09\u3002<br>See Also: \u2013no-deblock<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"slices\">slices<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u6bcf\u5e27\u7684\u5206\u7247\u6570\uff0c\u5f3a\u5236\u4f7f\u7528\u77e9\u5f62\u5206\u7247\u3002\uff08\u4f1a\u88ab\u2013slice-max-size \u6216 \u2013slice-max-mbs\u9009\u9879\u8986\u76d6)<br>\u5982\u679c\u662f\u5728\u4e3a\u84dd\u5149\u5149\u76d8\u7f16\u7801\uff0c\u8bbe\u7f6e\u4e3a4\u3002\u5982\u679c\u4e0d\u662f\uff0c\u4e0d\u8981\u4f7f\u7528\u8fd9\u4e2a\u9009\u9879\uff0c\u9664\u975e\u4f60\u786e\u5b9a\u4f60\u9700\u8981\u5b83\u3002<br>\u53c2\u89c1\uff1a\u2013slice-max-size, \u2013slice-max-mbs<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"slice-max-size\">slice-max-size<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u6bcf\u4e2a\u5206\u5757\u5305\u62ecNAL\u5934\u7684\u6700\u5927\u5927\u5c0f\uff08bytes\uff09\u3002 (\u76ee\u524d\u4e0e \u2013interlaced\u9009\u9879\u4e0d\u517c\u5bb9)<br>\u53c2\u89c1\uff1a\u2013slices<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"slice-max-mbs\">slice-max-mbs<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u6bcf\u4e2a\u5206\u5757\u5305\u542b\u7684\u6700\u5927\u5b8f\u5757\u6570\u91cf\u3002 (\u76ee\u524d\u4e0e \u2013interlaced\u9009\u9879\u4e0d\u517c\u5bb9)<br>\u53c2\u89c1\uff1a\u2013slices<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tff\">tff<\/h2>\n\n\n\n<p>\u8bf4\u660e\uff1a\u5f00\u542f\u9694\u884c\u7f16\u7801\u5e76\u8bbe\u7f6e\u4e0a\u534a\u573a\u5728\u524d\u3002x264\u7684\u9694\u884c\u7f16\u7801\u4f7f\u7528MBAFF\uff0c\u56e0\u6b64\u6548\u7387\u4e0d\u5982\u9010\u884c\u626b\u63cf\u3002\u6240\u4ee5\uff0c\u4ec5\u5728\u9700\u8981\u5728\u9694\u884c\u663e\u793a\u7684\u8bbe\u5907\u4e0a\u663e\u793a\u65f6\u624d\u5f00\u542f\u8fd9\u4e2a\u9009\u9879\uff08\u6216\u662f\u9001\u7ed9x264\u4e4b\u524d\u65e0\u6cd5\u8fdb\u884c\u53cd\u9694\u884c\u626b\u63cf\uff09\u3002\u8fd9\u4e2a\u9009\u9879\u4f1a\u89e6\u53d1 \u2013pic-struct\u5f00\u542f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bff\">bff<\/h2>\n\n\n\n<p>\u8bf4\u660e\uff1a\u5f00\u542f\u9694\u884c\u7f16\u7801\u5e76\u8bbe\u7f6e\u4e0b\u534a\u573a\u5728\u524d\u3002\u66f4\u591a\u4fe1\u606f\u540c\u2013tff\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"constrained-intra\">constrained-intra<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5f00\u542fSVC\u7f16\u7801\u7684\u5e95\u5c42\u8981\u6c42\u7684\u5f3a\u5236\u5e27\u5185\u9884\u6d4b\u3002\u9009\u62e9\u6bcf\u4e2a\u4eba\u90fd\u65e0\u89c6SVC\u4e86\uff0c\u4f60\u4e5f\u53ef\u4ee5\u5ffd\u7565\u8fd9\u4e2a\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pulldown\">pulldown<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1anone<br>\u8bf4\u660e\uff1a\u4e3a\u4f60\u7684\u8f93\u5165\u6d41\uff08\u9010\u884c\u626b\u63cf\u7684\uff0c\u56fa\u5b9a\u5e27\u7387\u7684\uff09\u4f7f\u7528\u4e00\u7ec4\u9884\u8bbe\u7684\u201c\u8f6f\u6027\u7535\u89c6\u6a21\u5f0f\u201d\u3002\u201c\u8f6f\u6027\u7535\u89c6\u6a21\u5f0f\u201d\u5728HandBrake Wiki\u91cc\u9762\u6709\u5f88\u597d\u7684\u89e3\u91ca\u3002\u53ef\u9009\u7684\u53c2\u6570\u6709\uff1anone\u300122\u300132\u300164\u3001double\u3001triple\u3001euro\u3002\u9664\u4e86none\u4e4b\u5916\u7684\u9009\u9879\u90fd\u4f1a\u89e6\u53d1 \u2013pic-struct\u5f00\u542f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"fake-interlaced\">fake-interlaced<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u628a\u6d41\u6807\u5fd7\u4e3a\u9694\u884c\u7684\u4f46\u4e0d\u6309\u9694\u884c\u7f16\u7801\u3002\u7528\u4e8e\u7f16\u780125p\u548c30p\u7684\u84dd\u5149\u517c\u5bb9\u89c6\u9891\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"\u7801\u7387\u63a7\u5236\">\u7801\u7387\u63a7\u5236<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"qp\">qp<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u4e09\u79cd\u53ef\u9009\u7684\u7801\u7387\u63a7\u5236\u65b9\u6cd5\u4e4b\u4e00\u3002\u8bbe\u7f6ex264\u4f7f\u7528\u56fa\u5b9a\u91cf\u5316\u53c2\u6570\u6a21\u5f0f\u3002\u7ed9\u5b9a\u7684\u6570\u91cf\u5c06\u88ab\u4f5c\u4e3aP\u5e27\u7684\u91cf\u5316\u53c2\u6570\uff0cI\u5e27\u548cB\u5e27\u7684\u91cf\u5316\u53c2\u6570\u7531\u2013ipratio and \u2013pbratio\u53c2\u6570\u8fdb\u4e00\u6b65\u7b97\u51fa\u3002QP\u6a21\u5f0f\u9002\u7528\u56fa\u5b9a\u7684\u91cf\u5316\u53c2\u6570\uff0c\u8fd9\u610f\u5473\u7740\u6700\u7ec8\u7684\u6587\u4ef6\u5927\u5c0f\u662f\u4e0d\u53ef\u77e5\u7684\uff08\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u5176\u4ed6\u65b9\u6cd5\u9884\u6d4b\uff09\u3002\u8bbe\u7f6e\u4e3a0\u5c06\u4ea7\u51fa\u65e0\u635f\u7684\u8f93\u51fa\u3002\u76f8\u540c\u89c6\u89c9\u8d28\u91cf\u65f6\uff0cQP\u6a21\u5f0f\u4ea7\u51fa\u7684\u6587\u4ef6\u6bd4crf\u6a21\u5f0f\u5927\u3002QP\u6a21\u5f0f\u5c06\u5173\u95ed\u81ea\u9002\u5e94\u91cf\u5316\u5668\uff0c\u56e0\u4e3a\u5b83\u662f\u56fa\u5b9aQP\u7684\u3002<br>\u8fd9\u4e2a\u9009\u9879\u548c \u2013bitrate\u548c\u2013crf\u662f\u4e92\u65a5\u7684\uff0c\u4e09\u8005\u53ea\u80fd\u9009\u4e00\u4e2a\uff0c\u5b83\u4eec\u80cc\u540e\u7684\u539f\u7406\u53ef\u4ee5\u770b\u8fd9\u7bc7\u6587\u7ae0<a href=\"http:\/\/blog.yikuyiku.com\/index.php\/archives\/1901\">http:\/\/blog.yikuyiku.com\/index.php\/archives\/1901<\/a>\u3002<br>\u4e00\u822c\u800c\u8a00crf\u90fd\u80fd\u4ee3\u66ffQP\u6a21\u5f0f\uff0c\u4e0d\u8fc7QP\u56e0\u4e3a\u5b8c\u5168\u4e0d\u9700\u8981\u9884\u6d4b\u6240\u4ee5\u5b83\u4f1a\u8fd0\u884c\u5730\u66f4\u5feb\u4e9b\u3002<br>\u53c2\u89c1\uff1a\u2013bitrate, \u2013crf, \u2013ipratio, \u2013pbratio<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bitrate\">bitrate<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u4e09\u79cd\u53ef\u9009\u7684\u7801\u7387\u63a7\u5236\u65b9\u6cd5\u4e4b\u4e8c\u3002\u8bbe\u7f6ex264\u4f7f\u7528\u56fa\u5b9a\u76ee\u6807\u6bd4\u7279\u7387\u6a21\u5f0f\u3002\u56fa\u5b9a\u76ee\u6807\u6bd4\u7279\u7387\u610f\u5473\u7740\u6700\u7ec8\u6587\u4ef6\u7684\u5927\u5c0f\u662f\u53ef\u77e5\u7684\uff0c\u4f46\u662f\u76ee\u6807\u7684\u8d28\u91cf\u662f\u4e0d\u53ef\u77e5\u7684\u3002 x264\u4f1a\u8bd5\u56fe\u8ba9\u6700\u7ec8\u6587\u4ef6\u7684\u6574\u4f53\u7801\u7387\u4e0e\u7ed9\u5b9a\u7684\u7801\u7387\u76f8\u7b49\u3002\u53c2\u6570\u7684\u91cf\u7eb2\u4e3akilobits\/sec\uff088bit = 1byte\uff09\u3002<br>\u901a\u5e38\u8fd9\u4e2a\u9009\u9879\u548c\u2013pass\u9009\u9879\u914d\u5408\u8fdb\u884c2\u8d9f\u7f16\u7801\u3002<br>\u8fd9\u4e2a\u9009\u9879\u548c \u2013qp\u548c\u2013crf\u662f\u4e92\u65a5\u7684\uff0c\u4e09\u8005\u53ea\u80fd\u9009\u4e00\u4e2a\uff0c\u5b83\u4eec\u80cc\u540e\u7684\u539f\u7406\u53ef\u4ee5\u770b\u8fd9\u7bc7\u6587\u7ae0<a href=\"http:\/\/blog.yikuyiku.com\/index.php\/archives\/1901\">http:\/\/blog.yikuyiku.com\/index.php\/archives\/1901<\/a>\u3002<br>\u53c2\u89c1\uff1a\u2013qp, \u2013crf, \u2013ratetol, \u2013pass, \u2013stats<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"crf\">crf<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a23.0<br>\u8bf4\u660e\uff1a\u4e09\u79cd\u53ef\u9009\u7684\u7801\u7387\u63a7\u5236\u65b9\u6cd5\u4e4b\u4e8c\u3002\u56fa\u5b9aratefactor\u3002QP\u662f\u56fa\u5b9a\u91cf\u5316\u5668\uff0cbitrate\u662f\u56fa\u5b9a\u6587\u4ef6\u5927\u5c0f\uff0ccrf\u5219\u662f\u56fa\u5b9a\u201c\u8d28\u91cf\u201d\u3002crf\u53ef\u4ee5\u63d0\u4f9b\u8ddfQP\u4e00\u6837\u7684\u89c6\u89c9\u7684\u8d28\u91cf\uff0c\u4f46\u662f\u6587\u4ef6\u66f4\u5c0f\u3002crf\u7684\u5355\u4f4d\u662fratefactor\u3002<br>crf\u662f\u901a\u8fc7\u964d\u4f4e\u90a3\u4e9b\u201c\u4e0d\u90a3\u4e48\u91cd\u8981\u201d\u7684\u5e27\u7684\u8d28\u91cf\u505a\u5230\u8fd9\u4e00\u5207\u7684\u3002\u201c\u4e0d\u90a3\u4e48\u91cd\u8981\u201d\u610f\u601d\u662f\u8fc7\u4e8e\u8017\u8d39\u7801\u7387\u53c8\u96be\u4ee5\u7528\u8089\u773c\u5bdf\u89c9\u7684\u5e27\uff0c\u6bd4\u5982\u590d\u6742\u6216\u8005\u8d85\u9ad8\u901f\u8fd0\u884c\u7684\u573a\u666f\u3002\u7701\u4e0b\u6765\u7684\u7801\u7387\u4f1a\u7528\u5728\u5176\u5b83\u66f4\u6709\u6548\u7684\u5e27\u91cc\u3002<br>crf\u7f16\u7801\u6bd42\u8d9f\u7f16\u7801\u5feb\uff0c\u56e0\u4e3a\u5b83\u76f8\u5f53\u4e8e\u7701\u7565\u4e86\u7b2c1\u8d9f\u7f16\u7801\u3002\u6240\u4ee5crf\u7684\u6700\u7ec8\u7801\u7387\u4e5f\u662f\u4e0d\u53ef\u9884\u6d4b\u7684\u3002\u4f60\u5e94\u8be5\u6839\u636e\u5e94\u7528\u573a\u666f\u6765\u9009\u62e9\u7801\u7387\u63a7\u5236\u65b9\u5f0f\u3002<br>\u8fd9\u4e2a\u9009\u9879\u548c \u2013qp\u548c\u2013crf\u662f\u4e92\u65a5\u7684\uff0c\u4e09\u8005\u53ea\u80fd\u9009\u4e00\u4e2a\uff0c\u5b83\u4eec\u80cc\u540e\u7684\u539f\u7406\u53ef\u4ee5\u770b\u8fd9\u7bc7\u6587\u7ae0<a href=\"http:\/\/blog.yikuyiku.com\/index.php\/archives\/1901\">http:\/\/blog.yikuyiku.com\/index.php\/archives\/1901<\/a>\u3002<br>\u53c2\u89c1\uff1a\u2013qp, \u2013bitrate<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"rc-lookahead\">rc-lookahead<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a40<br>\u8bf4\u660e\uff1a\u4e3amb-tree ratecontrol\uff08Macroblock Tree Ratecontrol\uff09\u548cvbv-lookahead\u8bbe\u7f6e\u53ef\u7528\u7684\u5e27\u7684\u6570\u91cf\u3002\u6700\u5927\u53ef\u8bbe\u7f6e\u4e3a250\u3002<br>\u5bf9\u4e8emb-tree\u800c\u8a00\uff0c\u8c03\u5927\u8fd9\u4e2a\u503c\u4f1a\u5f97\u5230\u66f4\u51c6\u786e\u5730\u7ed3\u679c\uff0c\u4f46\u4e5f\u4f1a\u66f4\u6162\u3002mb-tree\u80fd\u4f7f\u7528\u7684\u6700\u5927\u503c\u662f\u2013rc-lookahead\u548c\u2013keyint\u4e2d\u8f83\u5c0f\u7684\u90a3\u4e00\u4e2a\u3002<br>\u5bf9\u4e8evbv-lookahead\u800c\u8a00\uff0c\u8c03\u5927\u8fd9\u4e2a\u503c\u4f1a\u5f97\u66f4\u7a33\u5b9a\u548c\u7cbe\u786e\u7684\u7801\u7387\u63a7\u5236\u3002vbv-lookahead\u80fd\u4f7f\u7528\u7684\u6700\u5927\u503c\u662f\u5982\u4e0b\u516c\u5f0f\u7b97\u51fa\u6765\u7684\uff1aMIN(rc-lookahead, MAX(\u2013keyint, MAX(\u2013vbv-maxrate, \u2013bitrate) \/ \u2013vbv-bufsize * \u2013fps))<br>\u53c2\u89c1\uff1a\u2013no-mbtree, \u2013vbv-bufsize, \u2013vbv-maxrate<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"vbv-maxrate\">vbv-maxrate<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0<br>\u8bf4\u660e\uff1a\u8bbe\u7f6eVBV\uff08Video Buffering Verifier\uff09\u53ef\u7528\u7684\u6700\u5927\u7801\u7387\u3002\u4f7f\u7528VBV\u4f1a\u964d\u4f4e\u89c6\u9891\u8d28\u91cf\uff0c\u53ea\u5728\u771f\u6b63\u9700\u8981\u7684\u624d\u8bbe\u5b9a\u5b83\u3002<br>\u53c2\u89c1\uff1a\u2013vbv-bufsize, \u2013vbv-init\uff0c<a href=\"http:\/\/mewiki.project357.com\/wiki\/X264_Encoding_Suggestions#VBV_Encoding\">http:\/\/mewiki.project357.com\/wiki\/X264_Encoding_Suggestions#VBV_Encoding<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"vbv-bufsize\">vbv-bufsize<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0<br>\u8bf4\u660e\uff1a\u8bbe\u7f6eVBV\uff08Video Buffering Verifier\uff09\u53ef\u7528\u7684\u6700\u5927\u7f13\u51b2\u533a\uff0c\u5355\u4f4d\u662fkilobits\u3002\u4f7f\u7528VBV\u4f1a\u964d\u4f4e\u89c6\u9891\u8d28\u91cf\uff0c\u53ea\u5728\u771f\u6b63\u9700\u8981\u7684\u624d\u8bbe\u5b9a\u5b83\u3002<br>\u53c2\u89c1\uff1a\u2013vbv-maxsize, \u2013vbv-init\uff0c<a href=\"http:\/\/mewiki.project357.com\/wiki\/X264_Encoding_Suggestions#VBV_Encoding\">http:\/\/mewiki.project357.com\/wiki\/X264_Encoding_Suggestions#VBV_Encoding<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"vbv-init\">vbv-init<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0.9<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u91cd\u653e\u4e4b\u524d\u5fc5\u987b\u5148\u8f7d\u5165\u591a\u5927\u7684VBV\u7f13\u51b2\u3002<br>\u5982\u679c\u503c\u5c0f\u4e8e1\uff0c\u90a3\u4e48\u5927\u5c0f\u5c31\u4e3a vbv-init * vbv-bufsize\u3002\u5982\u679c\u5927\u4e8e1\uff0c\u5219\u662f\u4ee5kbits\u4e3a\u5355\u4f4d\u7684\u503c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"crf-max\">crf-max<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u7c7b\u4f3c \u2013qp-max\uff0c\u4f46\u662f\u8bbe\u7f6e\u7684\u662f\u6700\u5927\u7684ratefactor\u503c\u800c\u4e0d\u662f\u91cf\u5316\u53c2\u6570\u3002\u8fd9\u4e2a\u9009\u9879\u4ec5\u7528\u4e8ecrf\u548cvbv\u540c\u65f6\u542f\u7528\u7684\u65f6\u5019\u3002\u5b83\u963b\u6b62x264\u4f7f\u7528\u5c0f\u4e8e\u7ed9\u5b9a\u503c\u7684ratefactor\uff08\u4e5f\u5c31\u662f\u201c\u8d28\u91cf\u201d\uff09\uff0c\u54ea\u6015\u4f1a\u8fdd\u53cdvbv\u3002\u4e00\u822c\u7528\u4e8e\u6d41\u670d\u52a1\u5668\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"qpmin\">qpmin<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a10<br>\u8bf4\u660e\uff1a\u8bbe\u7f6ex264\u53ef\u4ee5\u4f7f\u7528\u7684\u6700\u5c0f\u91cf\u5316\u5668\u3002\u91cf\u5316\u53c2\u6570\u8d8a\u5c0f\uff0c\u8f93\u51fa\u8d8a\u63a5\u8fd1\u8f93\u5165\u3002\u4f7f\u7528\u67d0\u4e9b\u503c\u65f6\uff0cx264\u7684\u8f93\u51fa\u53ef\u4ee5\u548c\u8f93\u5165\u770b\u8d77\u6765\u5b8c\u5168\u4e00\u6837\uff0c\u867d\u7136\u5176\u5b9e\u5e76\u4e0d\u662f\u7cbe\u786e\u76f8\u540c\u7684\uff0c\u901a\u5e38\u5c31\u591f\u4e86\u6ca1\u6709\u5fc5\u8981\u4f7f\u7528\u66f4\u591a\u6bd4\u7279\u5728\u5b8f\u5757\u4e0a\u4e86\u3002<br>\u5982\u679c\u5f00\u542f\u4e86\u81ea\u9002\u5e94\u91cf\u5316\u5668\uff08\u9ed8\u8ba4\u5f00\u542f\uff09\uff0c\u5219\u4e0d\u9f13\u52b1\u63d0\u9ad8qpmin\u7684\u503c\uff0c\u90a3\u6837\u53ef\u80fd\u4f1a\u964d\u4f4e\u5e27\u7684\u5e73\u5766\u90e8\u5206\u7684\u8d28\u91cf\u3002<br>\u53c2\u89c1\uff1a\u2013qpmax, \u2013ipratio<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"qpmax\">qpmax<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a51<br>\u8bf4\u660e\uff1aqpmin\u7684\u53cd\u9762\uff0c\u8bbe\u7f6ex264\u53ef\u4ee5\u4f7f\u7528\u7684\u6700\u5927\u91cf\u5316\u5668\u3002\u9ed8\u8ba4\u503c51\u662fH.264\u6807\u51c6\u4e2d\u7684\u6700\u5927\u503c\uff0c\u8d28\u91cf\u975e\u5e38\u4f4e\u3002\u9ed8\u8ba4\u503c51\u5176\u5b9e\u76f8\u5f53\u4e8e\u6ca1\u6709\u8bbe\u7f6e qpmax\u3002\u5982\u679c\u4f60\u60f3\u63a7\u5236x264\u8f93\u51fa\u7684\u6700\u4f4e\u54c1\u8d28\uff0c\u4e5f\u8bb8\u4f60\u60f3\u8981\u628a\u8fd9\u4e2a\u503c\u8c03\u4f4e\u4e00\u70b9\uff08\u8c03\u523030-40\u6700\u4f4e\u4e86\uff09\uff0c\u4f46\u4e00\u822c\u800c\u8a00\u4e0d\u63a8\u8350\u8c03\u8282\u8fd9\u4e2a\u503c\u3002\u53c2\u89c1\uff1a\u2013qpmin, \u2013pbratio, \u2013crf-max<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"qpstep\">qpstep<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a4<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e2\u5e27\u95f4\u91cf\u5316\u5668\u6700\u5927\u7684\u53ef\u53d8\u503c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"ratetol\">ratetol<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a1.0<br>\u8bf4\u660e\uff1a\u8fd9\u4e2a\u53c2\u6570\u67092\u4e2a\u53ef\u80fd\u7684\u542b\u4e49\uff1a<br>1\u3001\u57281\u8d9fbitrate\u7f16\u7801\u65f6\uff0c\u8fd9\u4e2a\u53c2\u6570\u63a7\u5236x264\u53ef\u4ee5\u504f\u79bb\u7ed9\u5b9a\u7684\u5e73\u5747\u76ee\u6807\u6bd4\u7279\u7387\u7684\u767e\u5206\u6bd4\u3002\u53ef\u4ee5\u8bbe\u7f6e\u4e3ainf\u5b8c\u5168\u5173\u95ed\u7801\u7387\u6ea2\u51fa\u4fa6\u6d4b\u3002\u6700\u4f4e\u53ef\u4ee5\u8bbe\u7f6e\u4e3a 0.01\u3002\u8f83\u9ad8\u7684\u503c\u53ef\u4ee5\u8ba9x264\u66f4\u597d\u5730\u5904\u7406\u5f71\u7247\u7ed3\u675f\u90e8\u5206\u7684\u590d\u6742\u573a\u666f\u3002\u5bf9\u4e8e\u8fd9\u4e2a\u76ee\u7684\u800c\u8a00\u5355\u4f4d\u662f\u767e\u5206\u6bd4\uff081.0\u610f\u5473\u7740\u5141\u8bb81%\u7684bitrate\u504f\u5dee\uff09\u3002<br>\u5f88\u591a\u5f71\u7247\uff08\u6bd4\u5982\u8bf4\u52a8\u4f5c\u6253\u6597\u7247\uff09\u5728\u6700\u540e\u7684\u7247\u6bb5\u91cc\u5341\u5206\u590d\u6742\u30021\u8d9f\u7f16\u7801\u5e76\u4e0d\u77e5\u9053\u54ea\u91cc\u662f\u6700\u590d\u6742\u7684\u7247\u65ad\uff0c\u5f80\u5f80\u5230\u6700\u540e\u6bd4\u7279\u90fd\u5df2\u7ecf\u7528\u5b8c\u4e86\u3002\u628arateol\u8bbe\u7f6e\u4e3ainf\u5c31\u80fd\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5b83\u5141\u8bb8\u7f16\u7801\u5668\u7528\u7c7b\u4f3c \u2013crf\u7684\u65b9\u5f0f\u5de5\u4f5c\uff0c\u5f53\u7136\uff0c\u6587\u4ef6\u5927\u5c0f\u4f1a\u6ea2\u51fa\u3002<br>2\u3001\u5f53\u5f00\u542f\u4e86vbv\u65f6\uff08\u53ea\u8981\u4f7f\u7528\u4e86\u4efb\u4f55\u2013vbv-\u5f00\u5934\u7684\u9009\u9879\u5c31\u4f1a\u5f00\u542f\uff09\uff0c\u8fd9\u4e2a\u9009\u9879\u610f\u5473\u7740vbv\u7684\u5f3a\u5ea6\u3002\u66f4\u9ad8\u7684\u503c\u610f\u5473\u7740\u5141\u8bb8\u66f4\u9ad8\u7684\u5728\u8bbe\u5b9a\u7684vbv\u503c\u4e0a\u4e0b\u6ce2\u52a8\u3002\u5728\u8fd9\u4e2a\u542b\u4e49\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4efb\u610f\u7684\u5ea6\u91cf\u5355\u4f4d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"ipratio\">ipratio<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a1.40<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u5e73\u5747\u7684I\u5e27\u7684\u91cf\u5316\u5668\u76f8\u6bd4P\u5e27\u91cf\u5316\u5668\u589e\u503c\u3002\u66f4\u9ad8\u7684\u503c\u610f\u5473\u7740\u66f4\u9ad8\u7684I\u5e27\u8d28\u91cf\u3002<br>\u53c2\u89c1\uff1a\u2013pbratio<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pbratio\">pbratio<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a1.30<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u5e73\u5747\u7684B\u5e27\u7684\u91cf\u5316\u5668\u76f8\u6bd4P\u5e27\u91cf\u5316\u5668\u51cf\u503c\u3002\u66f4\u9ad8\u7684\u503c\u610f\u5473\u7740\u66f4\u4f4e\u7684B\u5e27\u8d28\u91cf\u3002\u5f00\u542fmbtree\uff08\u9ed8\u8ba4\u5f00\u542f\uff09\u9009\u9879\u65f6\u4e0d\u53ef\u7528\uff0cmbtree\u4f1a\u81ea\u9002\u5e94\u5730\u8ba1\u7b97B\u5e27\u91cf\u5316\u5668\u3002<br>\u53c2\u89c1\uff1a\u2013ipratio<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"chroma-qp-offset\">chroma-qp-offset<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u4e00\u4e2a\u7528\u4e8e\u8272\u5ea6\u7f16\u7801\uff08\u8bd1\u8005\u6309\uff1a\u89c6\u9891\u4f7f\u7528YUI\u7f16\u7801\uff0c\u4eba\u773c\u5bf9\u4e8e\u4eae\u5ea6\u66f4\u654f\u611f\uff09\u7684\u91cf\u5316\u5668\u7684\u504f\u79fb\u503c\u3002\u53ef\u4ee5\u662f\u8d1f\u503c\u3002\u5728\u5f00\u542f psy-rd\u6216 psy-trellis\u65f6 x264\u4f1a\u81ea\u52a8\u964d\u4f4e\u8272\u5ea6\u7684\u91cf\u5316\u53c2\u6570\u7528\u4e8e\u8865\u507f\u4eae\u5ea6\u7684\u91cf\u5316\u5668\uff0c\u610f\u5473\u7740\u8272\u5ea6\u8d28\u91cf\u4f1a\u88ab\u964d\u4f4e\u3002\u5b83\u4eec\u9ed8\u8ba4\u4f1a\u5728chroma-qp-offset\u7684\u57fa\u7840\u4e0a\u51cf2\u3002<br>\u6ce8\u610f\uff1ax264\u5728\u91cf\u5316\u566829\u65f6\u4f1a\u4e3a\u4eae\u5ea6\u548c\u8272\u5ea6\u4f7f\u7528\u540c\u6837\u7684\u91cf\u5316\u5668\u3002\u5f80\u540e\uff0c\u8272\u5ea6\u90fd\u4f1a\u4f7f\u7528\u6bd4\u4eae\u5ea6\u8fd8\u597d\u7684\u91cf\u5316\u5668\uff0c\u6700\u540e\uff0c\u4eae\u5ea6\u8fbe\u5230q51\u65f6\uff0c\u8272\u5ea6\u7684\u91cf\u5316\u5668\u662fq39\u3002\u8fd9\u4e2a\u662fH.264\u6807\u51c6\u4e2d\u8981\u6c42\u7684\u505a\u6cd5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"aq-mode\">aq-mode<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a1<br>\u8bf4\u660e\uff1a\u81ea\u9002\u5e94\u91cf\u5316\u5668\u6a21\u5f0f\u3002\u4e0d\u4f7f\u7528\u81ea\u9002\u5e94\u91cf\u5316\u7684\u8bdd\uff0cx264\u8d8b\u5411\u4e8e\u4f7f\u7528\u8f83\u5c11\u7684bit\u5728\u7f3a\u4e4f\u7ec6\u8282\u7684\u573a\u666f\u91cc\u3002\u81ea\u9002\u5e94\u91cf\u5316\u53ef\u4ee5\u5728\u6574\u4e2a\u89c6\u9891\u7684\u5b8f\u5757\u91cc\u66f4\u597d\u5730\u5206\u914d\u6bd4\u7279\u3002\u5b83\u6709\u4ee5\u4e0b\u9009\u9879\uff1a<br>0 \u2014\u2014 \u5b8c\u5168\u5173\u95ed\u81ea\u9002\u5e94\u91cf\u5316\u5668<br>1 \u2014\u2014 \u5141\u8bb8\u81ea\u9002\u5e94\u91cf\u5316\u5668\u5728\u6240\u6709\u89c6\u9891\u5e27\u5185\u90e8\u5206\u914d\u6bd4\u7279\u3002<br>2 \u2014\u2014 \u6839\u636e\u524d\u4e00\u5e27\u5f3a\u5ea6\u51b3\u7b56\u7684\u81ea\u53d8\u91cf\u5316\u5668\uff08\u5b9e\u9a8c\u6027\u7684\uff09\u3002<br>\u53c2\u89c1\uff1a \u2013aq-strength<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"aq-strength\">aq-strength<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a1.0<br>\u8bf4\u660e\uff1a\u81ea\u9002\u5e94\u91cf\u5316\u5f3a\u5ea6\u3002\u8bbe\u7f6e\u81ea\u9002\u5e94\u91cf\u5316\u5bf9\u4e8e\u7f3a\u4e4f\u7ec6\u8282\uff08\u5e73\u5766\uff09\u7684\u5b8f\u5757\u7684\u5265\u524a\u7a0b\u5ea6\u3002\u4e0d\u5141\u8bb8\u8d1f\u503c\u30020.0 \u2013 2.0\u4e4b\u5916\u7684\u503c\u4e0d\u63a8\u8350\u3002<br>\u53c2\u89c1\uff1a\u2013aq-mode<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pass\">pass<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u8fd9\u5bf92\u8d9f\u7f16\u7801\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u9009\u9879\u3002\u8fd9\u4e2a\u9009\u9879\u63a7\u5236\u4e86x264\u5982\u4f55\u5904\u7406 \u2013stats\u6307\u5b9a\u7684\u6587\u4ef6\u3002\u5b83\u6709\u4e09\u4e2a\u9009\u9879\u3002<br>1 \u2014\u2014 \u5efa\u7acb\u4e00\u4e2a\u65b0\u7684stats\u6587\u4ef6\uff0c\u7528\u4e8e\u7b2c\u4e00\u8d9f\u7f16\u7801\u3002<br>2 \u2014\u2014 \u8bfb\u53d6stats\u6587\u4ef6\uff0c\u7528\u4e8e\u6700\u540e\u4e00\u8d9f\u7f16\u7801\u3002<br>3 \u2014\u2014 \u8bfb\u53d6stats\u6587\u4ef6\uff0c\u800c\u4e14\u66f4\u65b0\u5b83\u3002<br>stats\u6587\u4ef6\u5305\u542b\u4e86\u6bcf\u4e2a\u8f93\u5165\u5e27\u7684\u4fe1\u606f\uff0cx264\u53ef\u4ee5\u8bfb\u53d6\u8fd9\u4e9b\u4fe1\u606f\u6765\u6539\u8fdb\u8f93\u51fa\u3002\u5927\u6982\u610f\u601d\u5c31\u662f\u5148\u8dd1\u4e00\u8d9f\u7f16\u7801\u751f\u6210stats\u6587\u4ef6\uff0c\u7136\u540e\u7b2c\u4e8c\u8d9f\u7f16\u7801\u5c31\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u6587\u4ef6\u4f18\u5316\u7f16\u7801\u7ed3\u679c\u3002\u89c6\u9891\u8d28\u91cf\u4f1a\u5f97\u5230\u5f88\u5927\u7684\u63d0\u5347\uff0c\u5927\u90e8\u5206\u539f\u56e0\u662f\u56e0\u4e3a\u53ef\u4ee5\u66f4\u597d\u5730\u8fdb\u884c\u6bd4\u7279\u5206\u914d\u3002<br>\u53c2\u89c1\uff1a\u2013stats, \u2013bitrate, \u2013slow-firstpass X264_statsfile<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"stats\">stats<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u2019x264_2pass.log\u2019<br>\u8bf4\u660e\uff1a\u8bbe\u7f6ex264\u8bfb\u53d6\u548c\u5199\u5165\u7684stats\u6587\u4ef6\u540d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-mbtree\">no-mbtree<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5173\u95ed\u57fa\u4e8e\u5b8f\u5757\u6811\u7684\u6bd4\u7279\u63a7\u5236\uff08macroblock tree ratecontrol\uff09\u3002\u57fa\u4e8e\u5b8f\u5757\u6811\u7684\u6bd4\u7279\u63a7\u5236\u901a\u8fc7\u6301\u7eed\u76d1\u63a7\u5b8f\u5757\u5728\u5e27\u95f4\u7684\u8fd0\u52a8\u548c\u76f8\u5bf9\u6743\u91cd\u6765\u63d0\u5347\u89c6\u9891\u8d28\u91cf\u3002\u5b83\u4f1a\u5355\u72ec\u751f\u6210\u4e00\u4e2a\u5f88\u5927\u7684stats\u6587\u4ef6\u3002<br>\u5efa\u8bae\u503c\uff1a\u4fdd\u6301\u9ed8\u8ba4<br>\u53c2\u89c1\uff1a\u2013rc-lookahead<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"qcomp\">qcomp<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0.60<br>\u8bf4\u660e\uff1a\u91cf\u5316\u5668\u66f2\u7ebf\u538b\u7f29\u53c2\u6570\u30020.0\u610f\u5473\u7740\u6052\u5b9a\u6bd4\u7279\u7387\uff0c1.0\u610f\u5473\u7740\u6052\u5b9a\u91cf\u5316\u5668\u3002\u5982\u679c\u5f00\u542f\u4e86mbtree\uff0c\u8fd9\u4e2a\u9009\u9879\u4f1a\u5f71\u54cdmbtree\u7684\u5f3a\u5ea6\uff08\u66f4\u9ad8\u7684\u503c\u610f\u5473\u7740\u66f4\u5f31\u7684mbtree\uff09\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<br>\u53c2\u89c1\uff1a\u2013cplxblur, \u2013qblur<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cplxblur\">cplxblur<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a20<br>\u8bf4\u660e\uff1a\u628a\u7ed9\u5b9a\u503c\u4f5c\u4e3a\u9ad8\u65af\u6a21\u7cca\u7684\u534a\u5f84\u5e94\u7528\u5230\u91cf\u5316\u66f2\u7ebf\u4e0a\u3002\u8fd9\u610f\u5473\u7740\u5206\u914d\u7ed9\u6bcf\u4e2a\u5e27\u7684\u91cf\u5316\u5668\u4f1a\u88ab\u5b83\u9644\u8fd1\u7684\u5e27\u7684\u91cf\u5316\u5668\u5e73\u5747\u6389\uff0c\u8fd9\u6837\u4f1a\u8fbe\u5230\u9650\u5236\u91cf\u5316\u5668\u6ce2\u52a8\u7684\u6548\u679c\u3002<br>\u53c2\u89c1\uff1a\u2013qcomp, \u2013qblur<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"qblur\">qblur<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0.5<br>\u8bf4\u660e\uff1a\u5728\u91cf\u5316\u66f2\u7ebf\u538b\u7f29\u540e\uff0c\u628a\u7ed9\u5b9a\u503c\u4f5c\u4e3a\u9ad8\u65af\u6a21\u7cca\u7684\u534a\u5f84\u5e94\u7528\u5230\u91cf\u5316\u66f2\u7ebf\u4e0a\u3002\u8fd9\u4e0d\u662f\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u9009\u9879\u3002<br>\u53c2\u89c1\uff1a\u2013qcomp, \u2013cplxblur<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"zones\">zones<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u8c03\u8282\u89c6\u9891\u7684\u7279\u6b8a\u7247\u65ad\u3002\u53ef\u4ee5\u7528\u5b83\u4fee\u6539\u5927\u591a\u6570x264\u9009\u9879\u3002<br>\u4e00\u4e2a\u5355\u72ec\u7684zone\u4f7f\u7528,,\u7684\u5f62\u5f0f\u8868\u8fbe\u3002\u591a\u4e2azone\u7528\u2019\/&#8217;\u5206\u9694\u3002<br>\u9009\u9879\uff1a<br>\u4ee5\u4e0b2\u4e2a\u9009\u9879\uff0c\u6bcf\u4e2azone\u53ea\u80fd\u8bbe\u7f6e\u5176\u4e2d\u4e00\u4e2a\uff0c\u6b64\u9009\u9879\u5fc5\u987b\u662fzone\u5217\u51fa\u6765\u7684\u7b2c\u4e00\u4e2a\u9009\u9879\uff1a<br>b=&nbsp;\u4f7fzone\u5185\u7684bitraye\u4e58\u4e0a\u7ed9\u5b9a\u7684\u7cfb\u6570\u3002\u5728\u8c03\u6574\u5feb\u901f\u548c\u6162\u901f\u573a\u666f\u65f6\u5f88\u6709\u7528\u3002<br>q=&nbsp;\u4f7f\u7528zone\u5185\u4f7f\u7528\u7ed9\u5b9a\u7684\u91cf\u5316\u5668\u3002\u5728\u4f18\u5316\u4e00\u4e2a\u5e27\u5e8f\u5217\u662f\u5f88\u6709\u7528\u3002<\/p>\n\n\n\n<p>\u5176\u4ed6\u53ef\u7528\u9009\u9879\uff1a<br>ref=<br>b-bias=<br>scenecut=<br>no-deblock<br>deblock=:<br>deadzone-intra=<br>deadzone-inter=<br>direct=<br>merange=<br>nr=<br>subme=<br>trellis=<br>(no-)chroma-me<br>(no-)dct-decimate<br>(no-)fast-pskip<br>(no-)mixed-refs<br>psy-rd=:<br>me=<br>no-8x8dct<br>b-pyramid=<br>\u9650\u5236\uff1a<br>\u4e00\u4e2azone\u7684\u53c2\u7167\u5e27\u6570\u91cf\u4e0d\u80fd\u8d85\u8fc7\u2013ref\u5b9a\u4e49\u7684\u503c\u3002<br>\u5982\u679cScenecut\u539f\u672c\u662f\u5173\u95ed\u7684\uff0c\u65e0\u6cd5\u5f00\u542f\u5b83\u3002<br>\u2013me\u5982\u679c\u539f\u672c\u88ab\u8bbe\u7f6e\u4e3a\u2013me esa\/tesa\u5219\u4e0d\u80fd\u4fee\u6539\u3002<br>Subme\u5982\u679c\u539f\u672c\u88ab\u8bbe\u7f6e\u4e3a0\u5219\u4e0d\u80fd\u4fee\u6539\u3002<br>\u5982\u679c\u2013me\u88ab\u8bbe\u7f6e\u4e3adia, hex\u6216umh\uff0c\u4e0d\u80fd\u4fee\u6539\u4e3a\u2013me esa\/tesa\u3002<\/p>\n\n\n\n<p>\u4f8b\u5b50\uff1a<br>0,1000,b=2\/1001,2000,q=20,me=3,b-bias=-1000<\/p>\n\n\n\n<p>\u5efa\u8bae\u503c\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"qpfile\">qpfile<\/h2>\n\n\n\n<p>\u8bf4\u660e\uff1a\u4eba\u5de5\u6539\u53d8\u6807\u51c6\u7684\u7801\u7387\u63a7\u5236\u65b9\u6cd5\u3002\u7ed9\u5b9a\u4e00\u4e2a\u4e3a\u7279\u6b8a\u5e27\u7ed9\u5b9a\u4e86\u91cf\u5316\u5668\u548c\u5e27\u7c7b\u578b\u7684\u6587\u4ef6\u3002\u683c\u5f0f\u662f\u2019\u5e27\u5e8f\u53f7 \u5e27\u7c7b\u578b \u91cf\u5316\u5668\u2019\u3002<br>\u4f8b\u5b50\uff1a<br>0 I 18 &lt; IDR (key) I-frame<br>1 P 20 &lt; P-frame<br>2 B 22 &lt; Referenced B-frame<br>3 i 21 &lt; Non-IDR (non-key) I-frame<br>4 b 18 &lt; Non-referenced B-frame<br>5 K 16 &lt; Keyframe*<br>\u6ce8\u610f\uff1a<br>\u4e0d\u7528\u6307\u5b9a\u6bcf\u4e00\u4e2a\u5e27\u3002<br>\u53ea\u60f3\u8bbe\u7f6e\u5e27\u7c7b\u578b\u65f6\uff0c\u53ef\u4ee5\u628a\u91cf\u5316\u5668\u8bbe\u7f6e\u4e3a-1\u6765\u8868\u660e\u5141\u8bb8x264\u81ea\u884c\u9009\u62e9\u4f18\u5316\u7684\u91cf\u5316\u5668\uff0c<br>\u5982\u679c\u624b\u5de5\u6307\u5b9a\u5927\u91cf\u7684\u5e27\u7c7b\u578b\u548c\u91cf\u5316\u5668\u4e4b\u95f4\u95f4\u6b47\u7a7f\u63d2\u7740\u8ba9x264\u81ea\u884c\u51b3\u7b56\u7684\u90e8\u5206\uff0c\u5219\u4f1a\u964d\u4f4ex264\u7684\u8868\u73b0\u3002<br>\u2018Keyframe\u2019 \u8868\u793a\u53ef\u4ee5seek\u5230\u7684\u5173\u952e\u5e27\u3002\u5982\u679c\u2013open-gop\u8bbe\u7f6e\u4e3anone\u5219\u610f\u5473\u7740IDR\u5e27\uff0c\u4e0d\u7136\u5c31\u610f\u5473\u7740\u4e00\u4e2aNon-IDR\u7684\u6807\u8bb0\u4e3a\u201c\u53d1\u73b0\u70b9SEI\u201d\u7684I\u5e27\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"x264\u53c2\u6570\u4ecb\u7ecd-\u4e8c-\u5206\u6790\u548c\u89c6\u9891\u53ef\u7528\u6027\u4fe1\u606f-\">x264\u53c2\u6570\u4ecb\u7ecd\uff08\u4e8c\u3001\u5206\u6790\u548c\u89c6\u9891\u53ef\u7528\u6027\u4fe1\u606f\uff09<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"\u5206\u6790\">\u5206\u6790<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"partitions\">partitions<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u2019p8x8,b8x8,i8x8,i4x4\u2032<br>\u8bf4\u660e\uff1aH.264\u5728\u538b\u7f29\u524d\u4f1a\u88ab\u5207\u5206\u4e3a16\u00d716\u5927\u5c0f\u7684\u5b8f\u5757\u3002\u8fd9\u4e9b\u5757\u53ef\u88ab\u8fdb\u4e00\u6b65\u5207\u5206\u6210\u66f4\u5c0f\u7684\u5757\uff0c\u5229\u7528\u6b64\u53c2\u6570\uff0c\u53ef\u4ee5\u63a7\u5236\u4e0d\u540c\u7684\u5e27\u7c7b\u578b\uff08I\u3001P\u3001B\uff09\u5f00\u542f\u66f4\u7ec6\u7684\u5e27\u5207\u5206\uff088\u00d78\u30014\u00d74\uff09\uff0c\u5177\u4f53\u53c2\u6570\u5982\u4e0b\uff1a<br>I\u5e27\uff1ai8x8\u3001i4x4\uff1b<br>P\u5e27\uff1ap8x8\uff08\u4f1a\u540c\u65f6\u5f00\u542fp16x8\u548cp8x16\uff09\u3001p4x4\uff08\u4f1a\u540c\u65f6\u5f00\u542fp8x4\u548cp4x8\uff09\uff1b<br>B\u5e27\uff1ab8x8\uff08\u4f1a\u540c\u65f6\u5f00\u542fb18x8\u548cb8x16\uff09\uff1b<br>\u53e6\u5916\uff0c\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u2019none\u2019\u548c\u2019all\u2019\u3002\u4e00\u822c\u800c\u8a00\uff0c\u5f00\u542fp4x4\u4e0d\u4f1a\u5e26\u6765\u591a\u5c11\u7684\u8d28\u91cf\u63d0\u5347\uff0c\u800c\u4e14\u5b83\u6781\u5176\u8017\u65f6\uff0c\u662f\u4e2a\u6027\u4ef7\u6bd4\u6bd4\u8f83\u4f4e\u7684\u9009\u9879\u3002<br>\u53c2\u89c1\uff1a\u2013no-8x8dct<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"direct\">direct<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u2019spatial\u2019<br>\u8bf4\u660e\uff1a\u4e3a\u2019direct\u2019\u7c7b\u578b\u7684\u8fd0\u52a8\u77e2\u91cf\u8bbe\u5b9a\u9884\u6d4b\u6a21\u5f0f\u3002\u6709\u4e24\u79cd\u53ef\u9009\u7684\u6a21\u5f0f\uff1aspatial\uff08\u7a7a\u95f4\u9884\u6d4b\uff09\u548ctemporal\uff08\u65f6\u95f4\u9884\u6d4b\uff09\u3002\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u2019none\u2019\u5173\u95ed\u9884\u6d4b\uff0c\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u2019auto\u2019\u8ba9x264\u53bb\u9009\u62e9\u5b83\u8ba4\u4e3a\u66f4\u597d\u7684\u6a21\u5f0f\uff0cx264\u4f1a\u5728\u7f16\u7801\u7ed3\u675f\u65f6\u544a\u8bc9\u4f60\u5b83\u7684\u9009\u62e9\u3002\u2019auto\u2019\u6700\u597d\u57282\u8d9f\u7f16\u7801\u4e2d\u4f7f\u7528\uff0c\u4f46\u4e5f\u53ef\u4ee5\u57281\u8d9f\u7f16\u7801\u65f6\u4f7f\u7528\u3002\u5982\u679c\u7528\u4e8e2\u8d9f\u7f16\u7801\uff0cx264\u4f1a\u5728\u7b2c1\u8d9f\u7f16\u5417\u65f6\u540c\u65f6\u5c1d\u8bd52\u79cd\u9884\u6d4b\u6a21\u5f0f\uff0c\u7136\u540e\u5728\u7b2c2\u8d9f\u7f16\u7801\u65f6\u4f7f\u7528\u5b83\u8ba4\u4e3a\u8f83\u597d\u7684\u90a3\u4e00\u4e2a\u3002\u6ce8\u610f\uff0c\u5982\u679c\u7b2c1\u8d9f\u7f16\u7801\u65f6\u9009\u62e9\u4e86\u2019auto\u2019\uff0c\u90a3\u4e48\u7b2c2\u8d9f\u7f16\u7801\u65f6\u4e5f\u5fc5\u987b\u8bbe\u7f6e\u4e3a\u2019auto\u2019\u3002\u4e0d\u7136\uff0c\u7b2c2\u8d9f\u7f16\u7801\u4f1a\u4f7f\u7528\u2019temporal\u2019\u3002\u672c\u9009\u9879\u4ece\u4e0d\u4f1a\u6d6a\u8d39\u6bd4\u7279\uff0c\u5f3a\u70c8\u63a8\u8350\u4f7f\u7528\u3002<br>\u5efa\u8bae\uff1a\u2019auto\u2019<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-weightb\">no-weightb<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1aH.264\u5141\u8bb8\u7ed9\u53ef\u53c2\u8003B\u5e27\u52a0\u4e0a\u5f71\u54cd\u9884\u6d4b\u56fe\u50cf\u7684\u6743\u91cd\uff0c\u6b64\u9009\u9879\u4f1a\u5173\u95ed\u6b64\u7279\u6027\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"weightp\">weightp<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a2<br>\u8bf4\u660e\uff1a\u5f00\u542f\u660e\u786e\u7684\u6743\u91cd\u9884\u6d4b\u4ee5\u589e\u8fdbP\u5e27\u538b\u7f29\u3002\u8d8a\u9ad8\u7ea7\u7684\u6a21\u5f0f\u8d8a\u8017\u65f6\uff0c\u6709\u4ee5\u4e0b\u6a21\u5f0f\uff1a<br>0 \u2014\u2014 \u5173\u95ed<br>1 \u2014\u2014 \u9759\u6001\u8865\u507f\uff08\u6c38\u8fdc\u4e3a-1\uff09<br>2 \u2014\u2014 \u667a\u80fd\u7edf\u8ba1\u9759\u6001\u5e27\uff0c\u7279\u522b\u4e3a\u589e\u8fdb\u6de1\u5165\u6de1\u51fa\u6548\u679c\u7684\u538b\u7f29\u7387\u800c\u8bbe\u8ba1\u3002<br>\u6ce8\u610f\uff1a\u4e3aAdobe Flash\uff08\u7248\u672c\u4f4e\u4e8e10.1\uff09\u7f16\u7801\u65f6\u8bf7\u628a\u6b64\u503c\u8bbe\u4e3a0\uff0c\u4f1a\u5bfc\u81f4\u89e3\u7801\u65f6\u51fa\u73b0\u9519\u8bef\u3002Flash 10.1\u65f6\u6b64BUG\u5f97\u5230\u4fee\u6b63\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"me\">me<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u2019hex\u2019<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u5168\u5c40\u7684\u8fd0\u52a8\u9884\u6d4b\u65b9\u6cd5\uff0c\u6709\u4ee5\u4e0b5\u79cd\u9009\u62e9\uff1a<br>dia\uff08\u56db\u8fb9\u5f62\u641c\u7d22\uff09 \u2014\u2014 \u6700\u7b80\u5355\u7684\u641c\u7d22\uff0c\u4ece\u6700\u4e50\u89c2\u7684\u60c5\u51b5\u5f00\u59cb\u9884\u6d4b\uff0c\u5728\u8fd0\u52a8\u77e2\u91cf\u7684\u4e0a\u4e0b\u5de6\u53f3\u5206\u522b\u504f\u79fb\u4e00\u4e2a\u50cf\u7d20\u5bf9\u6bd4\uff0c\u9009\u62e9\u5176\u4e2d\u6700\u597d\u7684\uff0c\u5faa\u73af\u76f4\u81f3\u627e\u4e0d\u5230\u66f4\u5339\u914d\u7684\u8fd0\u52a8\u77e2\u91cf\u3002<br>hex\uff08\u516d\u8fb9\u5f62\u641c\u7d22\uff09 \u2014\u2014 \u548c\u83f1\u5f62\u5dee\u4e0d\u591a\u7684\u7b56\u7565\uff0c\u4e0d\u540c\u7684\u662f\uff0c\u5b83\u57286\u8fb9\u5f62\u76846\u4e2a\u9876\u70b9\u4e0a\u8fdb\u884crang-2\u7684\u641c\u7d22\uff0c\u5b83\u5b9e\u73b0\u4e86\u6bd4dia\u6709\u6548\u7387\u5730\u591a\u7684\u641c\u7d22\u800c\u51e0\u4e4e\u4e0d\u4f1a\u4f7f\u7528\u66f4\u591a\u7684\u8017\u65f6\uff0c\u5b83\u662f\u666e\u901a\u7f16\u7801\u4efb\u52a1\u4e00\u4e2a\u5f88\u597d\u7684\u9009\u62e9\u3002<br>umh\uff08\u4e0d\u5747\u5300\u7684\u591a\u516d\u8fb9\u5f62\u641c\u7d22\uff09 \u2014\u2014 \u663e\u8457\u5730\u6bd4hex\u8981\u6162\uff0c\u4f46\u5b83\u5c1d\u8bd5\u8fdb\u884c\u590d\u6742\u591a\u516d\u8fb9\u5f62\u7684\u641c\u7d22\uff0c\u4ee5\u907f\u514d\u9519\u8fc7\u90a3\u4e9b\u96be\u4ee5\u627e\u5230\u7684\u8fd0\u52a8\u77e2\u91cf\u3002\u4e0ehex\u548cdia\u4e0d\u540c\u7684\u662f\uff0cmerange\u53c2\u6570\u76f4\u63a5\u4efb\u610f\u5927\u5c0f\u63a7\u5236umh\u7684\u641c\u7d22\u534a\u5f84\u3002<br>esa\uff08\u5168\u5c40\u641c\u7d22\uff09 \u2014\u2014 \u9ad8\u5ea6\u4f18\u5316\u7684\u5168\u5c40\u667a\u80fd\u641c\u7d22\uff0c\u5728\u6700\u4f73\u9884\u6d4b\u5668\u7684merange\u8303\u56f4\u5185\u8fdb\u884c\u8fd0\u52a8\u641c\u7d22\u3002\u5728\u5168\u5c40\u9762\u8fdb\u884c\u8fd0\u52a8\u5411\u91cf\u7684\u7b97\u672f\u5bf9\u6bd4\uff0c\u867d\u7136\u8ba1\u7b97\u8fc7\u7a0b\u5e76\u4e0d\u6162\uff0c\u4f46\u597d\u4e8b\u4ecd\u6bd4umh\u6709\u663e\u8457\u63d0\u5347\uff0c\u800c\u4e14\u5e76\u4e0d\u4f1a\u5e26\u6765\u592a\u591a\u8d28\u91cf\u65b9\u9762\u7684\u63d0\u5347\u3002\u6240\u4ee5\uff0c\u5bf9\u4e8e\u65e5\u5e38\u7684\u7f16\u7801\u4efb\u52a1\u6765\u8bf4\uff0c\u5b83\u4e0d\u662f\u7279\u522b\u6709\u7528\u3002<br>tesa\uff08\u53d8\u6362\u5168\u5c40\u641c\u7d22\uff09 \u2014\u2014 \u4f7f\u7528\u4e00\u79cd\u7b97\u6cd5\uff0c\u6548\u679c\u8fd1\u4e8e\u5bf9\u5168\u5c40\u7684\u6bcf\u4e2a\u8fd0\u52a8\u77e2\u91cf\u8fdb\u884cHadamard \u53d8\u6362\u6bd4\u5bf9\u3002\u641c\u7d22\u65b9\u5f0f\u4e0a\u548cesa\u5f88\u50cf\uff0c\u4f46\u662f\u6548\u679c\u6bd4esa\u597d\u4e00\u70b9\u70b9\uff0c\u8017\u65f6\u4e5f\u591a\u4e00\u70b9\u70b9\u3002<br>\u53c2\u89c1\uff1a\u2013merange<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"merange\">merange<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a16<br>\u8bf4\u660e\uff1amerange\u63a7\u5236\u8fd0\u52a8\u641c\u7d22\u7684\u6700\u5927\u50cf\u7d20\u8303\u56f4\u3002\u5bf9\u4e8ehex\u548cdia\uff0c\u8303\u56f4\u88ab\u63a7\u5236\u57284-16\u50cf\u7d20\uff0c\u9ed8\u8ba4\u5c31\u662f16\u3002\u5bf9\u4e8eumh\u548cesa\uff0c\u53ef\u4ee5\u8d85\u8fc7\u9ed8\u8ba4\u7684 16\u50cf\u7d20\u8fdb\u884c\u5927\u8303\u56f4\u7684\u8fd0\u884c\u641c\u7d22\uff0c\u8fd9\u5bf9\u9ad8\u5206\u8fa8\u7387\u89c6\u9891\u548c\u5feb\u901f\u8fd0\u52a8\u89c6\u9891\u800c\u8a00\u5f88\u6709\u7528\u3002\u6ce8\u610f\uff0c\u5bf9\u4e8eumh\u3001esa\u3001tesa\uff0c\u589e\u5927merange\u4f1a\u663e\u8457\u5730\u589e\u52a0\u7f16\u7801\u8017\u65f6\u3002<br>\u53c2\u89c1\uff1a\u2013me<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"mvrange\">mvrange<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a-1\uff08\u81ea\u52a8\uff09<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u5782\u76f4\u7684\u8fd0\u52a8\u77e2\u91cf\u6700\u5927\u50cf\u7d20\u503c\u3002\u9ed8\u8ba4\u503c\u5982\u4e0b\uff1a<br>level 1\/1b \u2014\u2014 64<br>level 1.1-2.0 \u2014\u2014 128<br>level 2.1-3.0 \u2014\u2014 256<br>level 3.1+ \u2014\u2014 512<br>\u6ce8\u610f\uff1a\u5982\u679c\u6253\u7b97\u624b\u52a8\u8bbe\u7f6e\u6b64\u503c\uff0c\u8981\u5728\u4e0a\u9762\u7ed9\u51fa\u7684\u503c\u7684\u57fa\u7840\u4e0a\u51cf\u53bb0.25\uff08\u5982\uff1a\u2013mvrange 127.75\uff09\uff0c<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"mvrange-thread\">mvrange-thread<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a-1\uff08\u81ea\u52a8\uff09<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u7ebf\u7a0b\u95f4\u8fd0\u52a8\u77e2\u91cf\u7684\u7f13\u51b2\u533a\u5927\u5c0f\u7684\u6700\u5c0f\u503c\u3002\u4e0d\u8981\u78b0\u8fd9\u4e2a\u9009\u9879\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"subme\">subme<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a7<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u4e9a\u50cf\u7d20\u4f30\u8ba1\u7684\u590d\u6742\u5ea6\u3002\u503c\u8d8a\u9ad8\u8d8a\u597d\u3002\u7ea7\u522b1-5\u7b80\u5355\u63a7\u5236\u4e9a\u50cf\u7d20\u7684\u7ec6\u5316\u529b\u5ea6\u3002\u7ea7\u522b6\u7ed9\u6a21\u5f0f\u51b3\u7b56\u5f00\u542fRDO\uff08\u7801\u7387\u5931\u771f\u4f18\u5316\u6a21\u5f0f\uff09\uff0c\u7ea7\u522b8\u7ed9\u8fd0\u52a8\u77e2\u91cf\u548c\u5e27\u5185\u9884\u6d4b\u6a21\u5f0f\u5f00\u542fRDO\u3002\u5f00\u542fRDO\u4f1a\u663e\u8457\u589e\u52a0\u8017\u65f6\u3002<br>\u4f7f\u7528\u5c0f\u4e8e2\u7684\u503c\u4f1a\u5f00\u542f\u4e00\u4e2a\u5feb\u901f\u7684\u3001\u4f4e\u8d28\u91cf\u7684\u9884\u6d4b\u6a21\u5f0f\uff0c\u6548\u679c\u5982\u540c\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u5f88\u5c0f\u7684 \u2013scenecut\u503c\u3002\u4e0d\u63a8\u8350\u8fd9\u6837\u8bbe\u7f6e\u3002<br>\u53ef\u4f7f\u7528\u7684\u503c\u5982\u4e0b\uff1a<br>0 \u2014\u2014 fullpel only<br>1 \u2014\u2014 QPel SAD 1 iteration<br>2 \u2014\u2014 QPel SATD 2 iterations<br>3 \u2014\u2014 HPel on MB then QPel<br>4 \u2014\u2014 Always QPel<br>5 \u2014\u2014 Multi QPel + bi-directional motion estimation<br>6 \u2014\u2014 RD on I\/P frames<br>7 \u2014\u2014 RD on all frames<br>8 \u2014\u2014 RD refinement on I\/P frames<br>9 \u2014\u2014 RD refinement on all frames<br>10 \u2014\u2014 QP-RD (requires \u2013trellis=2, \u2013aq-mode &gt; 0)<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4\uff0c\u6216\u8bbe\u7f6e\u4e3a\u66f4\u9ad8\uff0c\u9664\u975e\u5bf9\u901f\u5ea6\u5341\u5206\u654f\u611f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"subq\">subq<\/h2>\n\n\n\n<p>\u2013subme\u7684\u522b\u540d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"psy-rd\">psy-rd<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a1.0:0.0<br>\u8bf4\u660e\uff1a\u7b2c1\u4e2a\u6570\u5b57\u662fpsy-RDO\u7684\u5f3a\u5ea6\uff08subme\u5927\u4e8e\u7b49\u4e8e6\u65f6\u6fc0\u6d3b\uff09\u3002\u7b2c2\u4e2a\u6570\u5b57\u662fPsy-Trellis\u7684\u5f3a\u5ea6\uff08subme\u5927\u4e8e\u7b49\u4e8e1\u65f6\u6fc0\u6d3b\uff09\u3002\u6ce8\u610fTrellis\u7684\u7279\u6027\u4ecd\u662f\u2019\u5b9e\u9a8c\u6027\u2019\u7684\uff0c\u81f3\u5c11\u5bf9\u4e8e\u52a8\u753b\u89c6\u9891\u6765\u8bf4\uff0c\u5b83\u603b\u662f\u4f1a\u574f\u4e8b\u7684\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-psy\">no-psy<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5173\u95ed\u5168\u90e8\u4e3a\u4e86\u5fc3\u7406\u89c6\u89c9\u800c\u964d\u4f4epsnr\u6216ssim\u7684\u4f18\u5316\u3002\u6b64\u9009\u9879\u540c\u65f6\u4e5f\u4f1a\u5173\u95ed\u4e00\u4e9b\u4e0d\u80fd\u901a\u8fc7x264\u547d\u4ee4\u884c\u8bbe\u7f6e\u7684\u5185\u90e8\u7684\u5fc3\u7406\u89c6\u89c9\u4f18\u5316\u65b9\u6cd5\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-mixed-refs\">no-mixed-refs<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1aMixed refs\uff08\u6df7\u5408\u53c2\u7167\uff09\u4f1a\u4ee58\u00d78\u7684\u5207\u5757\u4e3a\u53c2\u7167\u53d6\u4ee3\u4ee5\u6574\u4e2a\u5b8f\u5757\u4e3a\u53c2\u7167\u3002\u4f1a\u589e\u8fdb\u591a\u5e27\u53c2\u7167\u7684\u5e27\u7684\u8d28\u91cf\uff0c\u4f1a\u6709\u4e00\u4e9b\u65f6\u95f4\u8017\u7528\u3002\u6b64\u9009\u9879\u5c06\u7981\u7528\u8fd9\u4e2a\u7279\u6027\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<br>\u53c2\u89c1\uff1a\u2013ref<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-chroma-me\">no-chroma-me<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u901a\u5e38\u8fd0\u52a8\u4f30\u8ba1\u90fd\u4f1a\u540c\u65f6\u8003\u8651\u4eae\u5ea6\u548c\u8272\u5ea6\u56e0\u7d20\u3002\u5f00\u542f\u6b64\u9009\u9879\u5c06\u4f1a\u5ffd\u7565\u8272\u5ea6\u56e0\u7d20\u6362\u53d6\u4e00\u4e9b\u901f\u5ea6\u7684\u63d0\u5347\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-8x8dct\">no-8x8dct<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u81ea\u9002\u5e94\u76848\u00d78 DCT\u4f1a\u5728I\u5e27\u4e2d\u5f00\u542f\u66f4\u667a\u80fd\u7684\u81ea\u9002\u5e948\u00d78\u7684\u65f6\u57df\u53d8\u6362\u3002\u5f00\u542f\u6b64\u9009\u9879\u53ef\u4ee5\u7981\u7528\u8fd9\u4e2a\u7279\u6027\u3002\uff08\u8bd1\u8005\u6309\uff1a\u6b64\u9009\u9879\u662f\u5c06H.264\u7684Profile\u4eceHigh\u964d\u4e3aMain\u7684\u91cd\u8981\u53c2\u6570\uff09<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"trellis\">trellis<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a1<br>\u8bf4\u660e\uff1a\u4f7f\u7528\u7f51\u683c\u7f16\u7801\u91cf\u5316\u4ee5\u589e\u8fdb\u7f16\u7801\u6548\u7387\uff1a<br>0 \u2014\u2014 \u5173\u95ed<br>1 \u2014\u2014 \u4ec5\u5728\u5b8f\u5757\u6700\u7ec8\u7f16\u7801\u65f6\u542f\u7528<br>2 \u2014\u2014 \u6240\u6709\u6a21\u5f0f\u4e0b\u5747\u542f\u7528<br>\u9009\u98791\u63d0\u4f9b\u4e86\u901f\u5ea6\u548c\u6548\u7387\u95f4\u8f83\u597d\u7684\u5747\u8861\uff0c\u9009\u98792\u5927\u5e45\u964d\u4f4e\u901f\u5ea6\u3002<br>\u5173\u4e8e\u7f51\u683c\u7f16\u7801\u91cf\u5316\u7684\u66f4\u8be6\u5c3d\u89e3\u91ca\u53ef\u4ee5\u53c2\u89c1\uff1a<a href=\"http:\/\/en.wikipedia.org\/wiki\/Trellis_quantization\">http:\/\/en.wikipedia.org\/wiki\/Trellis_quantization<\/a>\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<br>\u6ce8\u610f\uff1a\u9700\u8981\u5f00\u542f \u2013cabac\u9009\u9879\u751f\u6548<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-fast-pskip\">no-fast-pskip<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5173\u95edP\u5e27\u7684\u65e9\u671f\u8df3\u8fc7\u51b3\u7b56\u3002\u5927\u91cf\u7684\u65f6\u8017\u6362\u56de\u975e\u5e38\u5c0f\u7684\u8d28\u91cf\u63d0\u5347\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-dct-decimate\">no-dct-decimate<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1aDCT\u62bd\u6837\u4f1a\u4e22\u5f03\u770b\u4e0a\u53bb\u201c\u591a\u4f59\u201d\u7684DCT\u5757\u3002\u4f1a\u589e\u52a0\u7f16\u7801\u6548\u7387\uff0c\u901a\u5e38\u8d28\u91cf\u635f\u5931\u53ef\u4ee5\u5ffd\u7565\u3002\u6b64\u9009\u9879\u5173\u95ed\u6b64\u7279\u6027\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"nr\">nr<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u6267\u884c\u5feb\u901f\u53bb\u566a\u3002\u4ee5\u6b64\u503c\u4e3a\u9608\u503c\u786e\u5b9a\u566a\u97f3\uff0c\u901a\u8fc7\u5728\u91cf\u5316\u524d\u4e22\u5931\u5c0f\u7ec6\u8282\u7684\u65b9\u5f0f\u5c1d\u8bd5\u53bb\u9664\u566a\u97f3\u3002\u6548\u679c\u53ef\u80fd\u4e0d\u5982\u4f18\u79c0\u7684\u5916\u90e8\u53bb\u9020\u6ee4\u955c\uff0c\u4f46\u5b83\u6267\u884c\u5730\u975e\u5e38\u5feb\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4\u6216\u8005\u8bbe\u7f6e\u4e3a100-1000\u7528\u4ee5\u53bb\u566a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"deadzone-inter-intra\">deadzone-inter\/intra<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u5e27\u95f4\/\u5e27\u5185\u7684\u4eae\u5ea6\u91cf\u5316\u5668\u8f93\u51fa\u4e3a0\u7684\u533a\u57df\u5927\u5c0f\u3002\u8f93\u51fa\u4e3a0\u7684\u533a\u57df\u53ef\u4ee5\u8bbe\u7f6e\u4e3a0-32\uff0c\u8fd9\u4e2a\u503c\u8bbe\u7f6e\u7684\u662fx264\u6beb\u4e0d\u5c1d\u8bd5\u4fdd\u62a4\u76f4\u63a5\u4e22\u5f03\u7684\u7cbe\u5bc6\u7ec6\u8282\u3002\u5341\u5206\u7cbe\u7ec6\u7684\u7ec6\u8282\u65e2\u96be\u4ee5\u53d1\u89c9\uff0c\u7f16\u7801\u4ee3\u4ef7\u53c8\u6602\u8d35\uff0c\u76f4\u63a5\u4e22\u5f03\u5b83\u4eec\u53ef\u4ee5\u907f\u514d\u5728\u8fd9\u4e9b\u4f4e\u56de\u62a5\u7684\u90e8\u5206\u6d6a\u8d39\u6bd4\u7279\u3002\u6b64\u9009\u9879\u548cTrellis\u9009\u9879\u662f\u4e92\u4e0d\u76f8\u5bb9\u7684\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cqm\">cqm<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aFlat\uff08\u6ca1\u8bbe\u7f6e\uff09<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u81ea\u5b9a\u4e49\u7684\u91cf\u5316\u77e9\u9635\u53d6\u4ee3\u5185\u5efa\u7684\u5185\u5efa\u503c\u3002\u5185\u5efa\u503c\u6709flast\u6216JVT\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<br>\u53c2\u89c1\uff1a\u2013cqmfile<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cqmfile\">cqmfile<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u4f7f\u7528\u4e00\u4e2aJM\u683c\u5f0f\u77e9\u9635\u6587\u4ef6\u8bbe\u7f6e\u81ea\u5b9a\u4e49\u7684\u91cf\u5316\u77e9\u9635\u3002\u4f1a\u8986\u76d6\u5176\u4ed6\u7684 \u2013cqm*\u9009\u9879\u4eec\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<br>\u53c2\u89c1\uff1a\u2013cqm<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cqm4----cqm-8-\">cqm4* \/ cqm 8*<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u2013cqm4: \u8bbe\u7f6e\u6240\u67094\u00d74\u5757\u7684\u91cf\u5316\u77e9\u9635\uff0c\u4ee5\u753116\u4e2a\u9017\u53f7\u5206\u9694\u503c\u57df\u4e3a1-255\u7684\u503c\u7ec4\u6210\u7684\u5217\u8868\u7684\u5f62\u5f0f\u7ed9\u51fa\u3002<br>\u2013cqm8: \u8bbe\u7f6e\u6240\u67098\u00d78\u5757\u7684\u91cf\u5316\u77e9\u9635\uff0c\u4ee5\u753164\u4e2a\u9017\u53f7\u5206\u9694\u503c\u57df\u4e3a1-255\u7684\u503c\u7ec4\u6210\u7684\u5217\u8868\u7684\u5f62\u5f0f\u7ed9\u51fa\u3002<br>\u2013cqm4i, \u2013cqm4p, \u2013cqm8i, \u2013cqm8p: \u540c\u65f6\u8bbe\u7f6e\u8272\u5ea6\u548c\u4eae\u5ea6\uff08i\u4e3a\u5e27\u5185\u3001p\u4e3a\u5e27\u95f4\uff09\u77e9\u9635<br>\u2013cqm4iy, \u2013cqm4ic, \u2013cqm4py, \u2013cqm4pc: \u8bbe\u7f6e\u8272\u5ea6\u6216\u4eae\u5ea6\u77e9\u9635\uff08y\u4e3a\u4eae\u5ea6\u3001c\u4e3a\u8272\u5ea6\uff09\u3002\u8fd9\u6837\u7684\u53c2\u6570cqm8\u4e5f\u6709\u540c\u6837\u76844\u4e2a\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"\u89c6\u9891\u53ef\u7528\u6027\u4fe1\u606f\">\u89c6\u9891\u53ef\u7528\u6027\u4fe1\u606f<\/h1>\n\n\n\n<p>\u8fd9\u4e9b\u53c2\u6570\u4e3a\u89e3\u7801\u7684\u7a0b\u5e8f\u8bbe\u7f6e\u4e00\u4e2a\u53ef\u7528\u6807\u8bb0\u3002\u7531\u4e8e\u7ecf\u5e38\u88ab\u89e3\u7801\u8f6f\u4ef6\u6240\u5ffd\u7565\uff0c\u5728\u5927\u591a\u6570\u573a\u666f\u4e2d\u8fd9\u4e9b\u53c2\u6570\u90fd\u6ca1\u4ec0\u4e48\u610f\u4e49\uff0c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"overscan\">overscan<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aundef<br>\u8bf4\u660e\uff1a\u5982\u4f55\u5904\u7406\u8fc7\u626b\u63cf\u3002\u8fc7\u626b\u63cf\u5728\u8fd9\u91cc\u7528\u4e8e\u53ea\u663e\u793a\u56fe\u50cf\u7684\u4e00\u90e8\u5206\u3002\uff08\u8bd1\u8005\u6309\uff1a\u8fc7\u626b\u63cf\u6280\u672f\u672c\u7528\u5728\u9634\u6781\u5c04\u7ebf\u7ba1\u663e\u793a\u5668\u4e2d\u4e3a\u4fdd\u6301\u753b\u9762\u5b8c\u6574\u3002\uff09<br>\u53ef\u9009\uff1a<br>undef \u2013 \u4e0d\u5b9a\u4e49<br>show \u2013 \u663e\u793a\u5168\u90e8\u56fe\u50cf\u3002\u7406\u8bba\u4e0a\u6b64\u503c\u5e94\u8be5\u88ab\u89e3\u7801\u5668\u91cd\u89c6\u3002<br>crop \u2013 \u89c6\u9891\u5df2\u7ecf\u4e3a\u8fc7\u626b\u63cf\u663e\u793a\u5668\u505a\u8fc7\u5904\u7406\u3002\u53ef\u4ee5\u4e0d\u91cd\u89c6\u3002<br>\u5efa\u8bae\uff1a\u5982\u679c\u4f60\u7684\u8bbe\u5907\u652f\u6301\u6b64\u9009\u9879\uff0c\u5efa\u8bae\u5728\u7f16\u7801\u4e4b\u524d\u5bf9\u89c6\u9891\u8fdb\u884c\u88c1\u526a\u7136\u540e\u8bbe\u7f6e\u4e3ashow\u3002\u5982\u679c\u4e0d\u652f\u6301\u5c31\u522b\u7ba1\u6b64\u9009\u9879\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"videoformat\">videoformat<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aundef<br>\u8bf4\u660e\uff1a\u8868\u660e\u6b64\u89c6\u9891\u5728 \u7f16\u7801\/\u6570\u5b57\u5316 \u4e4b\u524d\u662f\u4ec0\u4e48\u683c\u5f0f\u7684\u3002<br>\u53ef\u9009\uff1a<br>component<br>pal<br>ntsc<br>secam<br>mac<br>undef<br>\u5efa\u8bae\uff1a\u8bbe\u4e3a\u539f\u89c6\u9891\u7684\u683c\u5f0f\uff0c\u6216\u8005\u8bbe\u4e3aundef\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"fullrange\">fullrange<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aoff<br>\u8bf4\u660e\uff1a\u8868\u660e\u4eae\u5ea6\u548c\u8272\u5ea6\u7ea7\u522b\u662f\u5426\u662f\u5168\u8303\u56f4\u7684\uff08\u8bd1\u8005\u6309\uff1a0-255\uff09\u3002\u5982\u679c\u8bbe\u4e3aoff\uff0c\u5219\u4e0d\u4f1a\u4f7f\u7528\u5168\u8303\u56f4\uff08\u8bd1\u8005\u6309\uff1a16-235\uff09\u3002<br>\u8fdb\u4e00\u6b65\u7684\u8bf4\u660e\u53ef\u53c2\u89c1<a href=\"http:\/\/blog.yikuyiku.com\/?p=2015\">http:\/\/blog.yikuyiku.com\/?p=2015<\/a>\u548c<a href=\"http:\/\/en.wikipedia.org\/wiki\/YCbCr\">http:\/\/en.wikipedia.org\/wiki\/YCbCr<\/a>\u3002<br>\u5efa\u8bae\uff1a\u5982\u679c\u89c6\u9891\u6e90\u662f\u4ece\u6a21\u62df\u89c6\u9891\u6570\u5b57\u5316\u800c\u6765\u7684\uff0c\u8bbe\u4e3aoff\u3002\u5426\u5219\u5219\u8bbe\u7f6e\u4e3aon\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"colorprim\">colorprim<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aundef<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u8f6c\u6362\u5230RGB\u7684\u539f\u8272\u3002<br>\u53ef\u9009\uff1a<br>undef<br>bt709<br>bt470m<br>bt470bg<br>smpte170m<br>smpte240m<br>film<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"transfer\">transfer<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aundef<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u5149\u7535\u8f6c\u6362\u5668\u4f7f\u7528\u7684\u7279\u6027\u3002\uff08\u8bbe\u7f6e\u7528\u4e8e\u4fee\u6b63\u7684gamma\u66f2\u7ebf\u3002\uff09<br>\u53ef\u9009\uff1a<br>undef<br>bt709<br>bt470m<br>bt470bg<br>linear<br>log100<br>log316<br>smpte170m<br>smpte240m<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"colormatrix\">colormatrix<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1aundef<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u7528\u4e8e\u4eceRGB\u539f\u8272\u4e2d\u63d0\u53d6\u4eae\u5ea6\u548c\u8272\u5ea6\u7684\u77e9\u9635\u7cfb\u6570\u3002<br>\u53ef\u9009\uff1a<br>undef<br>bt709<br>fcc<br>bt470bg<br>smpte170m<br>smpte240m<br>GBR<br>YCgCo<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"chromaloc\">chromaloc<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a0<br>\u8bf4\u660e\uff1a\u8bbe\u7f6e\u8272\u5ea6\u53d6\u6837\u4f4d\u7f6e\u3002\uff08H.264\u6807\u51c6\u7684\u9644\u4ef6E\u4e2d\u5b9a\u4e49\uff09\u3002\u53d6\u503c\u8303\u56f4\u4e3a0-5\u3002<br>\u8fdb\u4e00\u6b65\u7684\u8bf4\u660e\u53ef\u53c2\u89c1<a href=\"http:\/\/git.videolan.org\/?p=x264.git;a=blob;f=doc\/vui.txt\">http:\/\/git.videolan.org\/?p=x264.git;a=blob;f=doc\/vui.txt<\/a><br>\u5efa\u8bae\uff1a<br>\u5982\u679c\u4f60\u4ee5MPEG1\u6e90\u4e3a\u8f93\u5165\u505a4:2:0\u91c7\u6837\u7684\u8f6c\u7801\uff0c\u800c\u4e14\u6ca1\u4f5c\u4efb\u4f55\u8272\u5f69\u7a7a\u95f4\u8f6c\u6362\uff0c\u5e94\u8be5\u8bbe\u7f6e\u4e3a1\uff1b<br>\u5982\u679c\u4f60\u4ee5MPEG2\u6e90\u4e3a\u8f93\u5165\u505a4:2:0\u91c7\u6837\u7684\u8f6c\u7801\uff0c\u800c\u4e14\u6ca1\u4f5c\u4efb\u4f55\u8272\u5f69\u7a7a\u95f4\u8f6c\u6362\uff0c\u5e94\u8be5\u8bbe\u7f6e\u4e3a0\uff1b<br>\u5982\u679c\u4f60\u4ee5MPEG4\u6e90\u4e3a\u8f93\u5165\u505a4:2:0\u91c7\u6837\u7684\u8f6c\u7801\uff0c\u800c\u4e14\u6ca1\u4f5c\u4efb\u4f55\u8272\u5f69\u7a7a\u95f4\u8f6c\u6362\uff0c\u5e94\u8be5\u8bbe\u7f6e\u4e3a0\uff1b<br>\u5176\u4ed6\u60c5\u51b5\u4fdd\u6301\u9ed8\u8ba4\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"nal-hrd\">nal-hrd<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1anone<br>\u8bf4\u660e\uff1a\u8bbe\u7f6eHRD\u4fe1\u606f\u3002\u7528\u4e8e\u84dd\u5149\u6d41\u3001\u7535\u89c6\u5e7f\u64ad\u548c\u5176\u4ed6\u4e00\u4e9b\u7279\u6b8a\u573a\u5408\u3002\u53ef\u7528\u9009\u9879\u5982\u4e0b\uff1a<br>none \u2014\u2014 \u4e0d\u8bbe\u7f6eHRD\u4fe1\u606f<br>vbr \u2014\u2014 \u8bbe\u7f6eHRD\u4fe1\u606f<br>cbr \u2014\u2014 \u8bbe\u7f6eHRD\u4fe1\u606f\uff0c\u800c\u4e14\u628a\u6d41\u9650\u5236\u5728bitrate\u53c2\u6570\u5b9a\u4e49\u7684\u7801\u7387\u5185\u3002\u9700\u8981bitrate\u7801\u7387\u63a7\u5236\u65b9\u5f0f\u3002<br>\u5efa\u8bae\uff1anone\uff0c\u9664\u975e\u4f60\u9700\u8981\u8bbe\u7f6eHRD\u3002<br>\u53c2\u89c1\uff1a\u2013vbv-bufsize\uff0c \u2013vbv-maxrate\u548c \u2013aud<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pic-struct\">pic-struct<\/h2>\n\n\n\n<p>\u9ed8\u8ba4\uff1a\u65e0<br>\u8bf4\u660e\uff1a\u5f3a\u5236\u6309\u7167\u56fe\u50cf\u65f6\u5e8fSEI\u4f20\u9001pic_struct\u3002\u4f7f\u7528\u2013pulldown\u6216 \u2013tff\u6216\u2013bff\u53c2\u6570\u65f6\u4f1a\u9690\u5f0f\u542f\u7528\u3002<br>\u5efa\u8bae\uff1a\u4fdd\u6301\u9ed8\u8ba4<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"X264\u8bbe\u5b9a\">X264\u8bbe\u5b9a<\/h1>\n\n\n\n<p>\u672c\u9875\u8bf4\u660e\u6240\u6709x264\u53c2\u6570\u4e4b\u76ee\u7684\u548c\u7528\u6cd5\u3002\u53c2\u6570\u7684\u6392\u5217\u76f8\u540c\u4e8e\u5728<code>x264 --fullhelp<\/code>\u51fa\u73b0\u7684\u987a\u5e8f\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"x264\u8bbe\u5b9a\">x264\u8bbe\u5b9a<\/h1>\n\n\n\n<p>\u8bf4\u660e<\/p>\n\n\n\n<p>x264\u5e26\u6709\u4e00\u4e9b\u5185\u7f6e\u7684\u6587\u4ef6\u3002\u8981\u9605\u8bfb\u6b64\u8bf4\u660e\uff0c\u6267\u884c<code>x264 --help<\/code>\u3001<code>x264 --longhelp<\/code>\u6216<code>x264 --fullhelp<\/code>\u3002\u8d8a\u540e\u9762\u7684\u9009\u9879\u4f1a\u63d0\u4f9b\u8d8a\u8be6\u7ec6\u7684\u8d44\u8baf\u3002<\/p>\n\n\n\n<p>\u8f93\u5165<\/p>\n\n\n\n<p>\u4ee5\u4e00\u4e2a\u4f4d\u7f6e\u5f15\u6570\u6307\u5b9a\u8f93\u5165\u7684\u89c6\u8baf\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/ffmpeg.0voice.com\/data\/attachment\/forum\/202206\/23\/213011kdub5ye3yab1bssd.png?imageMogr2\/auto-orient\/strip%7CimageView2\/2\/w\/300\" alt=\"image.png\" title=\"image.png\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"slow-firstpass-\">slow-firstpass<\/h3>\n\n\n\n<p>\u9ed8\u8ba4\u503c\uff1a\u65e0<\/p>\n\n\n\n<p>\u4f7f\u7528&#8211;pass 1\u4f1a\u5728\u89e3\u6790\u547d\u4ee4\u5217\u7684\u6700\u540e\u5957\u7528\u4ee5\u4e0b\u8bbe\u5b9a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&#8211;ref 1<\/li>\n\n\n\n<li>&#8211;no-8x8dct<\/li>\n\n\n\n<li>&#8211;partitions i4x4 \uff08\u5982\u679c\u6700\u521d\u6709\u542f\u7528\uff0c\u5426\u5219\u4e3a\u65e0\uff09<\/li>\n\n\n\n<li>&#8211;me dia<\/li>\n\n\n\n<li>&#8211;subme MIN(2, subme)<\/li>\n\n\n\n<li>&#8211;trellis 0<\/li>\n<\/ul>\n\n\n\n<p>\u53ef\u4ee5\u4f7f\u7528&#8211;slow-firstpass\u6765\u505c\u7528\u6b64\u529f\u80fd\u3002\u6ce8\u610f\uff0c\u4f7f\u7528&#8211;presetplacebo\u4e5f\u4f1a\u542f\u7528slow-firstpass\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9274\u4e8ex264\u7684\u53c2\u6570\u4f17\u591a\uff0c\u5404\u79cd\u53c2\u6570\u7684\u914d\u5408\u590d\u6742\uff0c\u4e3a\u4e86\u4f7f\u7528\u8005\u65b9\u4fbf\uff0cx264\u5efa\u8bae\u5982\u65e0\u7279\u522b\u9700\u8981\u53ef\u4f7f\u7528preset\u548ctune\u8bbe\u7f6e\u3002\u8fd9\u5957\u5f00\u53d1\u8005\u63a8\u8350\u7684\u53c2\u6570\u8f83\u4e3a\u5408\u7406\uff0c\u53ef\u5728\u6b64\u57fa\u7840\u4e0a\u5728\u8c03\u6574\u4e00\u4e9b\u5177\u4f53\u53c2\u6570\u4ee5\u7b26\u5408\u81ea\u5df1\u9700\u8981\uff0c\u624b\u52a8\u8bbe\u5b9a\u7684\u53c2\u6570\u4f1a\u8986\u76d6preset\u548ctune\u91cc\u7684&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-352","post","type-post","status-publish","format-standard","hentry","category-7"],"views":253,"_links":{"self":[{"href":"https:\/\/site.uugo.cf\/index.php?rest_route=\/wp\/v2\/posts\/352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.uugo.cf\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.uugo.cf\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.uugo.cf\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/site.uugo.cf\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=352"}],"version-history":[{"count":2,"href":"https:\/\/site.uugo.cf\/index.php?rest_route=\/wp\/v2\/posts\/352\/revisions"}],"predecessor-version":[{"id":354,"href":"https:\/\/site.uugo.cf\/index.php?rest_route=\/wp\/v2\/posts\/352\/revisions\/354"}],"wp:attachment":[{"href":"https:\/\/site.uugo.cf\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.uugo.cf\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.uugo.cf\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}