{"id":2930,"date":"2023-06-20T23:42:20","date_gmt":"2023-06-20T15:42:20","guid":{"rendered":"https:\/\/www.xianwaizhiyin.net\/?p=2930"},"modified":"2023-06-27T00:23:13","modified_gmt":"2023-06-26T16:23:13","slug":"ffmpeg-priciple-route","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=2930","title":{"rendered":"\u300aFFmpeg\u539f\u7406\u300b\u7684\u521b\u4f5c\u4e4b\u8def"},"content":{"rendered":"\n<p>\u5199\u4f5c\u4e0d\u662f\u601d\u8003\u7684\u8bb0\u5f55\uff0c\u5199\u4f5c\u5c31\u662f\u601d\u8003\u672c\u8eab\u3002\u2014\u7406\u67e5\u5fb7\u00b7\u8d39\u66fc<\/p>\n\n\n\n<p>\u5199\u4f5c\u4e0d\u4ec5\u4ec5\u662f \u5b66\u4e60\u7684\u8bb0\u5f55\uff0c\u8fd8\u53ef\u4ee5\u5e2e\u4f60\u8fdb\u884c\u7cfb\u7edf\u7684\u601d\u8003\uff0c\u6709\u5f88\u591a\u4e1c\u897f\uff0c\u4f1a\u5728\u4f60\u5199\u4f5c\u7684\u8fc7\u7a0b\u4e2d\u4e0d\u65ad\u88ab\u6df1\u5165\u3002\u751a\u81f3\u6709\u4e9b\u8ba4\u77e5\u8bef\u533a\u6216\u8005\u6a21\u7cca\u7684\u77e5\u8bc6\u70b9\u4f60\u81ea\u5df1\u6ca1\u610f\u8bc6\u5230\u7684\uff0c\u76f4\u5230\u5199\u51fa\u6765\u4e86\u624d\u660e\u767d\u3002<\/p>\n\n\n\n<p>\u300a<a href=\"https:\/\/ffmpeg.xianwaizhiyin.net\/pdf-buy.html\">FFmpeg\u539f\u7406<\/a>\u300b\u7684\u521b\u4f5c\u4e4b\u8def\u5176\u5b9e\u5c31\u662f \u6211\u81ea\u5df1\u5b66\u4e60\u97f3\u89c6\u9891\u6280\u672f\u7684\u8fc7\u7a0b\uff0c\u6211\u57282\u5e74\u524d\u4e0d\u662f\u505a\u97f3\u89c6\u9891\u5f00\u53d1\u7684\u3002\u4e4b\u524d\u66f4\u591a\u7684\u662f\u505aPHP\u540e\u7aef\u5f00\u53d1\u3002\u6240\u4ee5\u5bf9 C\/C++ \u5e76\u4e0d\u662f\u7279\u522b\u719f\u6089\u3002<\/p>\n\n\n\n<p>\u5f53\u6211\u51b3\u5b9a\u5b66\u4e60\u97f3\u89c6\u9891\u7684\u65f6\u5019\uff0c\u6211\u7acb\u5373\u4e70\u4e86\u597d\u51e0\u672c\u9ad8\u5927\u4e0a\u7684\u4e66\u6765\u770b\uff0c\u4f8b\u5982\u300a\u4fe1\u606f\u8bba\u300b\u300a\u6570\u5b57\u89c6\u9891\u7f16\u7801\u6280\u672f\u539f\u7406\u300b\u7b49\u7b49\u3002\u8fd9\u4e9b\u4e66\u5176\u5b9e\u6211\u57282\u5e74\u524d\u662f\u770b\u4e0d\u61c2\u7684\uff0c\u6211\u786c\u7740\u5934\u76ae\u53bb\u770b\u4e86\u4e00\u4e2a\u6708\uff0c\u4e5f\u770b\u4e0d\u61c2\u3002<\/p>\n\n\n\n<p>\u540e\u6765\u53d1\u73b0\uff0c\u662f\u6211\u7684\u5b66\u4e60\u8def\u7ebf\u9519\u4e86\u3002\u97f3\u89c6\u9891\u5f00\u53d1\uff0c\u57fa\u672c\u4e0a\u4f7f\u7528\u7684\u90fd\u662f C\/C++\uff0c\u6240\u4ee5\u9996\u5148\u9700\u8981\u5b66\u4e60\u7684\u662f <strong>\u7f16\u8bd1<\/strong>\u3001<strong>\u94fe\u63a5<\/strong>\u3001<strong>\u8c03\u8bd5<\/strong> \u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u505a\u5230\u5927\u591a\u6570 C\/C++ \u9879\u76ee\u90fd\u80fd\u987a\u5229 build \u8d77\u6765\uff0c\u7136\u540e\u5355\u6b65\u8c03\u8bd5\u3002<\/p>\n\n\n\n<p><strong>\u4f60\u5f97\u5148\u662f\u4e00\u4f4d C\/C++ \u5de5\u7a0b\u5e08\uff0c\u7136\u540e\u624d\u80fd\u6210\u4e3a\u4e00\u4f4d \u97f3\u89c6\u9891 \u5de5\u7a0b\u5e08\u3002<\/strong><\/p>\n\n\n\n<p>\u6240\u4ee5\u5728\u9605\u8bfb\u4e86 \u4fde\u7532\u5b50\u7684\u300a\u7a0b\u5e8f\u5458\u7684\u81ea\u6211\u4fee\u517b\u300b\u8ddf \u5f20\u94f6\u594e\u8001\u5e08\u7684\u300a\u8f6f\u4ef6\u8c03\u8bd5\u300b\u4e4b\u540e\uff0c\u6211\u7cbe\u70bc\u51fa\u4e86\u4e00\u7ae0\u300a<a href=\"https:\/\/ffmpeg.xianwaizhiyin.net\/base-compile\/intro.html\">\u7f16\u8bd1\u94fe\u63a5\u57fa\u7840\u77e5\u8bc6<\/a>\u300b\u7684\u5185\u5bb9\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"814\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-1-1024x814.png\" alt=\"\" class=\"wp-image-2936\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-1-1024x814.png 1024w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-1-300x238.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-1-768x611.png 768w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-1.png 1151w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5728\u638c\u63e1\u4e86 C\/C++ \u57fa\u672c\u7684 \u7f16\u8bd1\u94fe\u63a5\uff0c\u8c03\u8bd5\u7684\u77e5\u8bc6\u4e4b\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u53bb\u5b66\u4e60 FFmpeg \u7684 API \u51fd\u6570\u7684\u7528\u6cd5\u4e86\u3002\u6709\u53ef\u80fd\u4f1a\u6709\u540c\u5b66\u95ee\uff0c\u90a3 C\/C++ \u7684\u8bed\u6cd5\u7528\u4e0d\u7528\u5b66\uff0c\u8fd9\u4e2a\u6211\u89c9\u5f97\u5b66\u4e2a 50% \u5c31\u884c\u4e86\uff0c\u5269\u4e0b\u7684\u8bed\u6cd5\u77e5\u8bc6\uff0c\u4f60\u76f4\u63a5\u5728\u5b9e\u6218\u4e2d\uff0c\u5728\u8c03\u8bd5\u522b\u4eba\u7684\u4ee3\u7801\u4e2d\u5b66\u4e60\u4f1a\u66f4\u52a0\u5feb\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u4e00\u76f4\u4e0d\u53bb\u5b9e\u6218\uff0c\u4e0d\u53bb\u8c03\u8bd5\uff0c\u4e0d\u53bb\u770b\u522b\u4eba\u6210\u719f\u7684\u4ee3\u7801\u8bbe\u8ba1\u3002\u4f1a\u5f88\u5bb9\u6613\u9677\u5165 C\/C++ \u7684\u8bed\u6cd5\u8ff7\u5bab\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u97f3\u89c6\u9891\u5f00\u53d1\uff0c\u6211\u4e2a\u4eba\u89c9\u5f97\u8d77\u6b65\u8fd8\u662f\u9700\u8981\u8e0f\u5b9e\u4e00\u70b9\uff0c\u4e00\u5f00\u59cb\u4f60\u4e0d\u7528\u53bb\u770b\u90a3\u4e9b \u7f16\u89e3\u7801\u7b97\u6cd5\uff0c\u53ea\u9700\u8981\u77e5\u9053 \u7f16\u7801\u7cfb\u7edf \u53ef\u4ee5\u538b\u7f29\u6570\u636e\u5c31\u884c\u4e86\u3002<\/p>\n\n\n\n<p>\u521a\u5f00\u59cb\uff0c\u4f60\u53ea\u9700\u8981\u53bb\u5b66\u4e60\u5404\u79cd\u5e93\u7684\u57fa\u672c\u4f7f\u7528\u5c31\u884c\uff0c\u97f3\u89c6\u9891\u9886\u57df\u6709\u5f88\u591a\u5e93\uff0c\u6709\u975e\u5e38\u591a\u7684\u6846\u67b6\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Android \u591a\u5a92\u4f53\u6846\u67b6\uff0c\u5305\u62ec MediaPlayer\uff0cMediaCodec \u7b49\u7b49\u3002\u8fd8\u6709 OpenMax<\/li>\n\n\n\n<li>IOS\uff0cmacOS \u7684\u591a\u5a92\u4f53\u6846\u67b6 AVFoundation<\/li>\n\n\n\n<li>Windows \u7684\u591a\u5a92\u4f53\u6846\u67b6\uff0cMedia Foundation\uff0cDXVA<\/li>\n\n\n\n<li>FFmpeg\uff0cGStreamer\uff0cwebrtc\uff0cOpenGL\uff0cOpenCV<\/li>\n<\/ol>\n\n\n\n<p>\u5728\u300aFFmpeg\u539f\u7406\u300b\u91cc\u9762\uff0c\u4e3b\u8981\u5c31\u4ecb\u7ecd FFmpeg \u8fd9\u4e2a\u5e93\u7684\u57fa\u672c\u4f7f\u7528\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"903\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-2-1024x903.png\" alt=\"\" class=\"wp-image-2937\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-2-1024x903.png 1024w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-2-300x265.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-2-768x677.png 768w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-2.png 1159w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u4f46\u5176\u5b9e\uff0c\u638c\u63e1\u4e86 FFmpeg \u5e93\u7684\u57fa\u672c\u4f7f\u7528\u4e4b\u540e\uff0c\u8fd8\u662f\u4e0d\u591f\uff0c\u56e0\u4e3a\u5bf9\u4e8e FFmpeg \u8fd9\u4e2a\u5f00\u6e90\u9879\u76ee\u6765\u8bf4\uff0c\u9664\u4e86 <code class=\"prettyprint\" >libavformat.so<\/code> \uff0c<code>libavcodec.so<\/code> \u7b49\u7b49 8 \u4e2a\u52a8\u6001\u5e93\u4e4b\u5916\uff0c\u8fd8\u6709\u4e00\u4e2a <code>ffmpeg.c<\/code> \u3002<\/p>\n\n\n\n<p><strong><code class=\"prettyprint\" >ffmpeg.c<\/code> \u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n\n\n\n<p><code class=\"prettyprint\" >ffmpeg.c<\/code> \u662f <code>ffmpeg.exe<\/code> \u547d\u4ee4\u884c\u7684\u6838\u5fc3\u4ee3\u7801\uff0c<code>ffmpeg.c<\/code> \u4e5f\u662f\u8c03\u4e86 8 \u4e2a\u52a8\u6001\u5e93\u7684 API \u51fd\u6570\u6765\u5b9e\u73b0\u81ea\u8eab\u529f\u80fd\u7684\u3002\u4f46\u662f <code>ffmpeg.c<\/code> \u672c\u8eab\u6709 5\u5343\u591a\u884c\u4ee3\u7801\uff0c\u8fd9 5000 \u591a\u884c\u4ee3\u7801\u662f\u5904\u7406\u5404\u79cd\u573a\u666f\u7684\u9c81\u68d2\u6027\uff0cpts \u65f6\u95f4\u6233\uff0c\u5404\u79cd\u53c2\u6570\u8bbe\u7f6e\u7684\u3002<\/p>\n\n\n\n<p>ffmpeg \u5f00\u53d1\u6700\u96be\u641e\u7684\u5c31\u662f\u5404\u79cd\u53c2\u6570\u7684\u8bbe\u7f6e\uff0c\u5982\u679c\u4f60\u81ea\u5df1\u8c03 API \u5b9e\u73b0\u529f\u80fd\uff0c\u80af\u5b9a\u4f1a\u9047\u5230\u67d0\u4e9b\u53c2\u6570\u8bbe\u7f6e\u9519\u4e86\uff0c\u67d0\u4e9b\u53c2\u6570\u6f0f\u4e86\u6ca1\u8bbe\u7f6e\u7b49\u7b49\uff0c\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u800c <code class=\"prettyprint\" >ffmpeg.c<\/code> \u628a\u8fd9\u4e9b\u7ec6\u8282\u95ee\u9898\u901a\u901a\u5e2e\u4f60\u89e3\u51b3\u4e86\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u5728\u5b66\u4e60\u4e86 FFmpeg API \u51fd\u6570\u7684\u57fa\u672c\u4f7f\u7528\uff0c\u57fa\u672c\u7684 <strong>\u89e3\u590d\u7528<\/strong> \u2794 <strong>\u89e3\u7801<\/strong> \u2794 <strong>\u7f16\u7801<\/strong> \u2794 <strong>Muxer<\/strong> \u7684\u8fc7\u7a0b\u4f60\u4e5f\u4e86\u89e3\u4e86\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"631\" height=\"61\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-2-2.jpg\" alt=\"\" class=\"wp-image-2938\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-2-2.jpg 631w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-2-2-300x29.jpg 300w\" sizes=\"auto, (max-width: 631px) 100vw, 631px\" \/><\/figure>\n\n\n\n<p>\u73b0\u5728\u5c31\u9700\u8981\u53bb\u5b66\u4e60 <code class=\"prettyprint\" >ffmpeg.c<\/code> \u7684\u4ee3\u7801\uff0c\u4e0d\u7528\u4e86\u89e3 <code>ffmpeg.c<\/code> \u91cc\u9762\u6240\u6709\u7684\u7ec6\u8282\uff0c\u505a\u5230 \u80fd\u6839\u636e\u9700\u6c42 \u4e8c\u6b21\u5f00\u53d1 <code>ffmpeg.c<\/code> \u5373\u53ef\uff0c\u8fd9\u4e5f\u5c31\u662f\u300aFFmpeg\u539f\u7406\u300b\u4e00\u4e66\u7684\u300a<a href=\"https:\/\/ffmpeg.xianwaizhiyin.net\/ffmpeg\/\">ffmpeg.c\u6e90\u7801\u5206\u6790<\/a>\u300b\u4e00\u7ae0\u7684\u5185\u5bb9\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"879\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-3-1024x879.png\" alt=\"\" class=\"wp-image-2934\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-3-1024x879.png 1024w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-3-300x258.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-3-768x660.png 768w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-3.png 1190w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5f53\u4f60\u638c\u63e1\u4e86 FFmpeg API \u7684\u57fa\u672c\u7528\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u4e8c\u6b21\u5f00\u53d1 <code class=\"prettyprint\" >ffmpeg.c<\/code> \u4e4b\u540e\uff0c\u5927\u90e8\u5206\u7684\u9700\u6c42\u4f60\u57fa\u672c\u90fd\u80fd\u89e3\u51b3\u4e86\u3002\u4f46\u662f\u8fd8\u6709\u4e00\u90e8\u5206\u9700\u6c42\u9700\u8981\u66f4\u6df1\u5165\u77e5\u8bc6\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\u81ea\u5b9a\u4e49\u4e00\u4e2a <code class=\"prettyprint\" >Demuxer\/Muxer<\/code> \u6765\u5b9e\u73b0\u52a0\u5bc6\u64ad\u653e\u5668\u7684\u529f\u80fd\u3002\u81ea\u5b9a\u4e49\u4e00\u4e2a <code>AVFilter<\/code> \u6765\u5b9e\u73b0\u7279\u5b9a\u7684\u89c6\u9891\u6548\u679c\u3002\u7b49\u7b49\uff0c\u8fd9\u4e2a\u5c31\u662f\u300aFFmpeg\u539f\u7406\u300b\u4e0b\u518c\u7684\u5185\u5bb9\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"875\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-4-1024x875.png\" alt=\"\" class=\"wp-image-2935\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-4-1024x875.png 1024w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-4-300x256.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-4-768x656.png 768w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2023\/06\/ffmpeg-write-1-4.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u6700\u540e\u518d\u5206\u4eab\u4e00\u4e0b\u6211\u521b\u4f5c\u8fd9\u672c\u4e66\u7684\u4e00\u4e9b\u7ecf\u9a8c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1\uff0c\u4e0d\u8981\u8bbe\u7f6e Deadline<\/h4>\n\n\n\n<p>\u56e0\u4e3a\u5199\u4f5c\u662f\u9700\u8981\u7075\u611f\u7684\uff0c\u7075\u611f\u4e0d\u4f1a\u56e0\u4e3a\u4f60\u8bbe\u7f6e\u4e86 Deadline \u5c31\u4f1a\u8e66\u51fa\u6765\u3002\u76f8\u53cd Deadline 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