{"id":332,"date":"2022-01-31T17:41:38","date_gmt":"2022-01-31T09:41:38","guid":{"rendered":"http:\/\/192.168.0.122:8088\/?p=332"},"modified":"2022-01-31T17:41:38","modified_gmt":"2022-01-31T09:41:38","slug":"ffmpeg%e6%ba%90%e7%a0%81%e5%88%86%e6%9e%90-process_inputs","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=332","title":{"rendered":"ffmpeg\u6e90\u7801\u5206\u6790-process_inputs"},"content":{"rendered":"\n<p>\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.2 \u6e90\u7801\u4e3a\u51c6\uff0c\u4e0b\u8f7d\u5730\u5740\uff1a\u94fe\u63a5\uff1a<a href=\"https:\/\/pan.baidu.com\/s\/1VpUvpLhew-nuq4Dns80mOw\">\u767e\u5ea6\u7f51\u76d8<\/a> \u63d0\u53d6\u7801\uff1ag3k8<\/p>\n\n\n\n<p>ffmpeg \u6e90\u7801\u5206\u6790\u7cfb\u5217\u4ee5\u4e00\u6761\u7b80\u5355\u7684\u547d\u4ee4\u5f00\u59cb\uff0c<code class=\"prettyprint\" >ffmpeg -i a.mp4 b.flv<\/code>\uff0c\u5206\u6790\u5176\u5185\u90e8\u903b\u8f91\u3002<\/p>\n\n\n\n<p>a.mp4\u4e0b\u8f7d\u94fe\u63a5\uff1a<a href=\"https:\/\/pan.baidu.com\/s\/1RN1xRsQDGx65MGyB_T1IzA\">\u767e\u5ea6\u7f51\u76d8<\/a>\uff0c\u63d0\u53d6\u7801\uff1anl0s \u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u672c\u6587\u4e3b\u8981\u5206\u6790 <code class=\"prettyprint\" >process_inputs()<\/code> \u7684\u5185\u90e8\u903b\u8f91\uff0c\u6d41\u7a0b\u56fe\u5982\u4e0b<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"969\" height=\"497\" src=\".\/wp-content\/uploads\/2022\/01\/ffmpeg_c-8-1.png\" alt=\"\" class=\"wp-image-334\"\/><\/figure>\n\n\n\n<p>process_input() \u91cc\u9762\u6709\u4e00\u90e8\u5206\u903b\u8f91\u662f\u5904\u7406EOF\uff0c\u5904\u7406\u8f6c\u7801\u7ed3\u675f\u903b\u8f91\u7684\u3002\u8f6c\u7801\u7ed3\u675f\u903b\u8f91\u5b9e\u9645\u662f\u6bd4\u8f83\u590d\u6742\u7684\uff0c\u6d89\u53ca\u5230\u597d\u51e0\u4e2a\u5b57\u6bb5\u72b6\u6001\u7684\u8f6c\u6362\u3002\u6240\u4ee5\u672c\u6587\u4e0d\u4f1a\u8bb2EOF\u7684\u5904\u7406\u3002EOF\u7684\u5904\u7406\u4f1a\u53e6\u5f00\u4e00\u7bc7\u6587\u4ef6\u8bb2\u89e3\u3002<\/p>\n\n\n\n<p>process_input() \u91cc\u9762\u628a\u591a\u79cd\u573a\u666f\u547d\u4ee4\u7684\u5904\u7406\u6df7\u5728\u4e00\u8d77\uff0c\u770b\u8d77\u6765\u6bd4\u8f83\u590d\u6742\uff0c\u5b9e\u9645\u4e0adebug\u4e00\u4e0b\u3002\u5728<code class=\"prettyprint\" >ffmpeg -i a.mp4 b.flv<\/code> \u547d\u4ee4\u4e0b\uff0c\u6709\u4e9b\u4ee3\u7801\u6267\u884c\u4e86\u8ddf\u6ca1\u6267\u884c\u4e00\u6837\u3002\u5b9e\u9645\u4e0a <code>process_input()<\/code> \u7684\u4e00\u4e9b\u8bed\u53e5\u5982\u679c\u52a0\u4e0a <code>if<\/code> \u6761\u4ef6\uff0c\u8ba9\u67d0\u79cd\u573a\u666f\u7684\u547d\u4ee4\u4e00\u6761\u76f4\u7ebf\u8dd1\u4e0b\u53bb\uff0c\u4ee3\u7801\u53ef\u8bfb\u6027\u4f1a\u66f4\u5f3a\uff0c\u8fd9\u662f\u4e2a\u4eba\u89c2\u70b9\u3002<\/p>\n\n\n\n<p>\u4e0b\u56fe\u76f4\u63a5\u8d34\u4e0a\u4ee3\u7801\uff0c\u7ea2\u8272\u6846\u662f\u9700\u8981\u91cd\u70b9\u5173\u6ce8\u7684\uff0c\u7eff\u8272\u6846\u5c31\u662f\u5728\u5f53\u524d\u547d\u4ee4\u4e0b\u4e0d\u4f1a\u6267\u884c\uff0c\u6216\u8005\u6267\u884c\u4e86\u8ddf\u6ca1\u6267\u884c\u4e00\u6837\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1128\" height=\"2324\" src=\".\/wp-content\/uploads\/2022\/01\/ffmpeg_c-8-2.png\" alt=\"\" class=\"wp-image-333\"\/><\/figure>\n\n\n\n<p>\u5982\u4e0a\u56fe\u6240\u793a\uff0c\u6709\u51e0\u4e2a\u5730\u65b9\u9700\u8981\u8bb2\u89e3\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>EOF \u5904\u7406\uff0c\u8fd9\u4e2a\u6bd4\u8f83\u91cd\u8981\uff0c\u4f46\u662f\u672c\u6587\u7ae0\u4e3b\u8981\u5206\u6790\u8f6c\u7801\u4e2d\u95f4\u7684\u8fc7\u7a0b\uff0c\u4e0d\u662f\u8f6c\u7801\u5b8c\u6210\u4e4b\u540e\u7684\u5904\u7406\u3002\u6b64\u5904\u4e0d\u5206\u6790EOF\u3002<\/li><li>pts_wrap_bits &lt; 64 \uff0c\u4e3b\u8981\u662f\u5904\u7406\u4e00\u4e9b ts \u6d41\u7684\uff0c\u672c\u6587\u7684mp4 \u6587\u4ef6\u8f6c\u7801\u4e0d\u4f1a\u8dd1\u8fdb\u53bb\u3002<\/li><li>\u5728\u672c\u6587\u7684\u547d\u4ee4\u4e0b\uff0c<code class=\"prettyprint\" >ts_offset<\/code> \u662f0\uff0c\u6240\u4ee5 += <code>ts_offset<\/code> \u6267\u884c\u8ddf\u6ca1\u6267\u884c\u4e00\u6837\u3002\u540c\u6837\u7684\u8fd8\u6709 <code>duration<\/code> \u53c2\u6570\u4e5f\u662f0\u3002<\/li><li>\u6700\u540e\u4e00\u4e2a\u7ea2\u6846\u7684 delta \u53ef\u4ee5\u91cd\u70b9\u5173\u6ce8\u4e00\u4e0b\uff0c<code>ist-&gt;next_dts<\/code> \u662f\u7531\u4e0a\u4e00\u4e2a<code>pkt<\/code> \u7684 <code>dts<\/code> + \u89c6\u9891\u5e27\u7387\u7b49\u53c2\u6570\u7b97\u51fa\u6765\u7684\u3002\u8fd9\u91cc\u4e3b\u8981\u68c0\u6d4b <code>pkt<\/code> \u7684 pts dts \u6709\u6ca1\u95ee\u9898\u3002<\/li><li>\u8c03\u7528 <code>process_input_packet()<\/code><\/li><\/ol>\n\n\n\n<p>\u7531\u6b64\u53ef\u89c1\uff0cprocess_input() \u505a\u7684\u4e8b\u60c5\u5176\u5b9e\u6bd4\u8f83\u5c11\uff0c\u4e3b\u8981\u662f\u68c0\u6d4b\u8bfb\u53d6\u51fa\u6765\u7684 packet \u7684\u5404\u79cd\u53c2\u6570\u6709\u65e0\u95ee\u9898\uff0c\u7136\u540e\u66f4\u65b0 <code class=\"prettyprint\" >InputStream ist<\/code> \uff0c <code>InputFile ifile<\/code> \u7684\u4e00\u4e9b\u53c2\u6570\u3002\u6700\u540e\u8c03\u7528 <code>process_input_packet()<\/code>;<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u00a9\u7248\u6743\u6240\u5c5e\uff1a\u77e5\u8bc6\u661f\u7403\uff1a\u5f26\u5916\u4e4b\u97f3\uff0cQQ\uff1a2338195090\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u7b14\u8005\u7684\u6c34\u5e73\u6709\u9650\uff0c \u52a0\u4e4b\u7f16\u5199\u7684\u540c\u65f6\u8fd8\u8981\u53c2\u4e0e\u5f00\u53d1\u5de5\u4f5c\uff0c\u6587\u4e2d\u96be\u514d\u4f1a\u51fa\u73b0\u4e00\u4e9b\u9519\u8bef\u6216\u8005\u4e0d\u51c6\u786e\u7684\u5730\u65b9\uff0c\u6073\u8bf7\u8bfb\u8005\u6279\u8bc4\u6307\u6b63\u3002\u5982\u679c\u8bfb\u8005\u6709\u4efb\u4f55\u5b9d\u8d35\u610f\u89c1\uff0c\u53ef\u4ee5\u52a0\u6211\u5fae\u4fe1 Loken1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.2 \u6e90\u7801\u4e3a\u51c6\uff0c\u4e0b\u8f7d\u5730\u5740\uff1a\u94fe\u63a5\uff1a\u767e\u5ea6\u7f51\u76d8 \u63d0\u53d6\u7801\uff1ag3k8 ffmpeg \u6e90\u7801\u5206\u6790\u7cfb [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,15],"tags":[],"class_list":["post-332","post","type-post","status-publish","format-standard","hentry","category-ffmpeg","category-ffmpeg-transcode"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ffmpeg\u6e90\u7801\u5206\u6790-process_inputs - \u5f26\u5916\u4e4b\u97f3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.xianwaizhiyin.net\/?p=332\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ffmpeg\u6e90\u7801\u5206\u6790-process_inputs - \u5f26\u5916\u4e4b\u97f3\" \/>\n<meta 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