{"id":448,"date":"2022-01-31T18:48:57","date_gmt":"2022-01-31T10:48:57","guid":{"rendered":"http:\/\/192.168.0.122:8088\/?p=448"},"modified":"2024-01-05T00:34:26","modified_gmt":"2024-01-04T16:34:26","slug":"ffplay%e6%ba%90%e7%a0%81%e5%88%86%e6%9e%90-main","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=448","title":{"rendered":"FFplay\u6e90\u7801\u5206\u6790-main"},"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>FFplay \u6e90\u7801\u5206\u6790\u7cfb\u5217\u4ee5\u4e00\u6761\u7b80\u5355\u7684\u547d\u4ee4\u5f00\u59cb\uff0c<code class=\"prettyprint\" >ffplay -i a.mp4<\/code>\u3002a.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 has-css-opacity\"\/>\n\n\n\n<p>\u8fd9\u4e2a\u7cfb\u5217\u4e3b\u8981\u76ee\u7684\u662f\u8ba9\u8bfb\u8005\u770b\u5b8c\u8fd9\u4e2a\u7cfb\u5217\u4e4b\u540e\u80fd\u5bf9 ffplay.c \u7684\u4e3b\u5e72\u903b\u8f91\u6709\u6e05\u6670\u7684\u4e86\u89e3\u3002\u4e00\u4e9b\u6b21\u8981\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u5404\u79cd ffplay \u547d\u4ee4\u884c\u4e2d\u5176\u4ed6\u7684\u547d\u4ee4\u53c2\u6570<strong>-filter<\/strong> <strong>-vcodec<\/strong>\u7b49\u7b49\u3002\u7406\u89e3\u4e3b\u5e72\u903b\u8f91\u4e4b\u540e\uff0c\u81ea\u884c\u65ad\u70b9debug\u5373\u53ef\u4e86\u89e3 <strong>-filter<\/strong> <strong>-vcodec<\/strong> \u7b49 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\u6587\u4ef6\uff0c\u7136\u540e\u628a yuv \u6570\u636e\u4f20\u9012\u7ed9 SDL \u64ad\u653e\u3002\u4f46 ffplay \u91cc\u9762\u6ca1\u6709\u7f16\u7801\u529f\u80fd\u3002\u7f16\u7801\u8bf7\u770b\u6211\u5206\u4eabffmpeg\u7684\u6587\u7ae0\u3002<a href=\"https:\/\/juejin.cn\/column\/7052201274099384334\">FFmpeg\u6e90\u7801\u5206\u6790\u4e13\u680f<\/a><\/p>\n\n\n\n<p>\u672c\u7cfb\u5217\uff0c\u4f1a\u4ece main() \u51fd\u6570\u5f00\u59cb\u8bb2\u8d77\uff0c\u529b\u56fe\u4e00\u6761\u76f4\u7ebf\u7ed9\u5927\u5bb6\u63cf\u7ed8ffplay \u7684\u4e3b\u5e72\u903b\u8f91\u3002<\/p>\n\n\n\n<p>\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u91cd\u70b9\u51fd\u6570\u7528\u7ea2\u7b14\u5708\u51fa\u6765\u4e86\uff0c\u975e\u91cd\u70b9\u51fd\u6570\u7528\u7eff\u7b14\u5708\u51fa\u6765\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"797\" height=\"706\" src=\".\/wp-content\/uploads\/2022\/01\/ffplay-2-2.png\" alt=\"\" class=\"wp-image-450\"\/><\/figure>\n\n\n\n<p><strong>\u975e\u91cd\u70b9\u51fd\u6570\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>parse_loglevel() \uff0c\u89e3\u6790\u547d\u4ee4\u884c\u53c2\u6570 <strong>-loglevel<\/strong> \uff0c\u628a\u5bf9\u5e94\u7684\u503c\u89e3\u6790\u5230\u4ee3\u7801\u53d8\u91cf\uff0c\u7136\u540e av_log() \u51fd\u6570\u5c31\u53ef\u4ee5\u6839\u636e\u8bbe\u7f6e\u7684\u7ea7\u522b\u663e\u793a\u4e0d\u540c\u7ea7\u522b\u7684\u65e5\u5fd7\u3002<\/li>\n\n\n\n<li>signal() \u4e24\u4e2a\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u91cd\u70b9\u51fd\u6570\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>parse_options()\uff0c\u8fd9\u4e2a\u51fd\u6570\u7279\u522b\u91cd\u8981\uff0c\u5b83\u662f\u5904\u7406\u547d\u4ee4\u884c\u53c2\u6570\u7684\u89e3\u6790\u7684\uff0c\u628a\u547d\u4ee4\u884c\u53c2\u6570\uff0c\u4f8b\u5982 <strong>-vcodec h264<\/strong> (\u5f3a\u5236\u4f7f\u7528 h264 \u89e3\u7801\u89c6\u9891\u6587\u4ef6) \uff0c\u628a\u8fd9\u4e9b\u547d\u4ee4\u53c2\u6570 key value\uff0c\u89e3\u6790\u5230\u4ee3\u7801\u7684\u5168\u5c40\u53d8\u91cf\u91cc\u9762\u3002parse_options() \u91cc\u9762\u7684\u903b\u8f91\u6bd4\u8f83\u7b80\u5355\uff0c\u81ea\u5df1\u770b\u4ee3\u7801\u4e5f\u80fd\u5f04\u61c2\uff0c\u91cc\u9762\u7684write_option() \u51fd\u6570\u8bf7\u9605\u8bfb\u6211\u4e4b\u524d\u7684\u6587\u7ae0<a href=\"https:\/\/juejin.cn\/post\/7052333158460555301\">\u300affmpeg \u6e90\u7801\u5206\u6790-\u547d\u4ee4\u884c2\u300b<\/a>\uff0c\u6709\u5206\u6790 write_option() \u51fd\u6570\u7684\u5b9e\u73b0\u3002parse_options() \u8fd9\u4e2a\u51fd\u6570\u5728ffpaly\u91cc\u5b9e\u73b0\u7684\u529f\u80fd\u662f\u6bd4\u8f83\u7b80\u5355\u7684\uff0c\u56e0\u4e3a\u4ed6\u7684optctx\u7684\u4f20\u53c2\u662f NULL\uff0c\u6240\u4ee5\u547d\u4ee4\u884c\u53c2\u6570\u5168\u90fd\u662f\u89e3\u6790\u5230\u5168\u5c40\u53d8\u91cf\uff0c\u4f8b\u5982 <strong>-duration 30s<\/strong> \u89e3\u6790\u5230 \u5168\u5c40\u53d8\u91cf duration\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>ffplay \u6e90\u7801\u5206\u6790\uff0c\u547d\u4ee4\u884c\u53c2\u6570\u89e3\u6790\u5206\u6790\u5b8c\u6bd5\u3002<\/p>\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 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