{"id":775,"date":"2022-02-17T12:54:23","date_gmt":"2022-02-17T04:54:23","guid":{"rendered":"http:\/\/124.223.94.246\/?p=775"},"modified":"2022-02-17T12:57:59","modified_gmt":"2022-02-17T04:57:59","slug":"ffplay%e7%a1%ac%e4%bb%b6%e5%8a%a0%e9%80%9f","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=775","title":{"rendered":"FFplay\u786c\u4ef6\u52a0\u901f"},"content":{"rendered":"\n<p>\u672c\u6587 \u4ee5 ffmpeg-4.4 \u6e90\u7801\u4e3a\u51c6\uff0ca.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>FFplay \u786c\u4ef6\u89e3\u7801\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >ffplay.exe -vcodec h264_cuvid -i a.mp4<\/code><\/pre>\n\n\n\n<p>\u4e0a\u9762\u547d\u4ee4\u6307\u5b9a\u4e86 NVIDIA \u7684 \u786c\u4ef6\u89e3\u7801\u5668\uff0c<code class=\"prettyprint\" >h264_cuvid<\/code>\u3002 \u5728 ffplay.c \u7684\u4ee3\u7801\u91cc\u9762 \u786c\u4ef6\u89e3\u7801 \u8ddf \u666e\u901a\u89e3\u7801\u5728\u903b\u8f91\u4e0a\u6ca1\u6709\u505a\u4ec0\u4e48\u7279\u6b8a\u7684\u5904\u7406\u3002<\/p>\n\n\n\n<p><code class=\"prettyprint\" >ffplay.c<\/code> \u91cc\u9762\u6ca1\u6709\u50cf <code>ffmpeg.c<\/code> \u90a3\u6837\u652f\u6301 <code>-hwaccel<\/code> \u8fd9\u4e2a\u9009\u9879\uff0c\u6240\u4ee5 ffplay.c \u7684\u786c\u4ef6\u89e3\u7801\u6d41\u7a0b \u8ddf \u666e\u901a\u89e3\u7801 \u6d41\u7a0b\u6ca1\u6709\u533a\u522b\uff0c\u81f3\u5c11\u5728 API \u51fd\u6570\u4f7f\u7528\u4e0a\u662f\u8fd9\u6837\u3002<\/p>\n\n\n\n<p>\u65ad\u70b9\u67e5\u770b\u53ef\u4ee5\u770b\u5230\uff0c\u5c31\u662f \u4f20\u9012\u4e00\u4e2a \u89e3\u7801\u5668\u540d\u79f0 \u8fdb\u884c <code class=\"prettyprint\" >avcodec_open2()<\/code> \u51fd\u6570\u91cc\u9762\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1489\" height=\"814\" src=\"\/wp-content\/uploads\/2022\/02\/ffplay-cuvid.png\" alt=\"\" class=\"wp-image-776\"\/><\/figure>\n\n\n\n<p>\u4f7f\u7528 ffplay \u8fdb\u884c\u786c\u4ef6\u89e3\u7801\u7684\u65f6\u5019\uff0cGPU \u7684\u6027\u80fd\u76d1\u63a7\u56fe\u5982\u4e0b\uff0c\u53ef\u4ee5\u770b\u5230\uff0c\u5360\u7528\u7387\u975e\u5e38\u4f4e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"549\" height=\"510\" src=\"\/wp-content\/uploads\/2022\/02\/ffplay-gpu.png\" alt=\"\" class=\"wp-image-777\"\/><\/figure>\n\n\n\n<p>ffplay \u8ddf ffmpeg \u89e3\u7801\u7684\u65f6\u5019\u4e0d\u4e00\u6837\uff0c\u8fd9\u662f\u56e0\u4e3a ffplay \u53ea\u9700\u8981\u6309\u7167\u5e27\u7387\u53bb\u89e3\u7801\u5373\u53ef\uff0cffplay \u662f\u64ad\u653e\u591a\u5c11\uff0c\u89e3\u7801\u591a\u5c11\u3002\u800c ffmpeg \u662f\u89e3\u7801\u5f97\u8d8a\u5feb\u8d8a\u597d\u3002\u6240\u4ee5 ffmpeg \u786c\u4ef6\u89e3\u7801 \u5360\u7528\u7684 gpu \u8d44\u6e90\u4f1a\u5f88\u9ad8\uff0cffmpeg \u53ef\u4ee5\u901a\u8fc7 <code class=\"prettyprint\" >-re<\/code> \u53c2\u6570\u63a7\u5236\u89e3\u7801\u901f\u5ea6\u3002<\/p>\n\n\n\n<p>\u8fd8\u6709\u4e00\u4e2a\u5730\u65b9\uff0cffplay \u4e0d\u652f\u6301 <code class=\"prettyprint\" >-hwaccel<\/code> \u8fd9\u4e2a\u9009\u9879\u3002<\/p>\n\n\n\n<p><code class=\"prettyprint\" >-hwaccel<\/code> \u8fd9\u4e2a\u9009\u9879 \u5e94\u8be5\u662f \u63a7\u5236 GPU \u8fdb\u884c\u5e76\u884c\u8ba1\u7b97\u7684\uff0c\u56e0\u4e3a\u5728\u663e\u5361\u91cc\uff0c\u5e76\u884c\u8ba1\u7b97\u8ddf\u7f16\u89e3\u7801\u5668\u662f\u4e24\u4e2a\u6a21\u5757\uff08\u8fd9\u4e2a\u6211\u4e5f\u4e0d\u592a\u6e05\u695a\uff0c\u77e5\u9053\u7684\u670b\u53cb\u53ef\u4ee5\u5728\u6587\u7ae0\u8bc4\u8bba\u8865\u5145\u4e00\u4e0b\uff09<\/p>\n\n\n\n<hr 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