{"id":1507,"date":"2022-03-15T18:18:05","date_gmt":"2022-03-15T10:18:05","guid":{"rendered":"https:\/\/www.xianwaizhiyin.net\/?p=1507"},"modified":"2022-06-11T02:17:02","modified_gmt":"2022-06-10T18:17:02","slug":"fplay%e6%ba%90%e7%a0%81%e5%88%86%e6%9e%90-rtmp_open","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=1507","title":{"rendered":"FFplay\u6e90\u7801\u5206\u6790-rtmp\u5165\u53e3"},"content":{"rendered":"\n<p>\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.4 \u6e90\u7801\u4e3a\u51c6\u3002\u672c\u6587\u4e3b\u8981\u8bb2\u89e3 ffplay \u7684 RTMP \u534f\u8bae\u89e3\u6790\uff0c\u64ad\u653e\u3002\u672c\u6587\u4f7f\u7528\u7684\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >ffplay -i rtmp:\/\/192.168.0.122\/live\/livestream<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5148\u6309\u7167\u4e4b\u524d\u7684\u535a\u5ba2\u7684\u6559\u7a0b \u914d\u7f6e\u597d window 10 qt creator + msvc \u7684\u8c03\u8bd5\u73af\u5883\u3002\u5fc5\u987b\u662f msvc \uff0cmingw\u4e0d\u884c\uff0cmingw\u65e0\u6cd5debug \u8fdb\u53bb ffmpeg\u7684\u52a8\u6001\u5e93\u3002\u672c\u535a\u5ba2\u6682\u65f6\u6ca1\u6709\u5177\u4f53\u7684\u6559\u7a0b\u8bb2\u89e3\u5982\u4f55 \u79fb\u690d ffplay.c \u5230 qt msvc \u73af\u5883\uff0c\u5177\u4f53\u53ef\u4ee5\u53c2\u8003\u300a<a href=\"https:\/\/www.xianwaizhiyin.net\/?p=439\">FFplay\u6e90\u7801\u5206\u6790-\u73af\u5883\u642d\u5efa<\/a>\u300b \u8ddfffmpeg.c \u7684 msvc\u79fb\u690d\u6559\u7a0b \u300a<a href=\"https:\/\/www.xianwaizhiyin.net\/?p=579\"><strong>ffmpeg-qt-msvc\u79fb\u690d\u8c03\u8bd5<\/strong>\u300b<\/a>\u3002ffmpeg.c \u8ddf ffplay.c \u7684\u79fb\u690d\u5927\u540c\u5c0f\u5f02\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>google_ads_content<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u4ece\u4e4b\u524d\u7684\u6587\u7ae0\u77e5\u9053\uff0cRTMP\u7684\u64ad\u653e\uff0c\u8ddf\u672c\u5730\u6587\u4ef6\u7684\u64ad\u653e\u5728 API \u4f7f\u7528\u4e0a\uff0c\u6ca1\u6709\u591a\u5927\u533a\u522b\uff0c\u90fd\u662f \u8c03 <code class=\"prettyprint\" >av_read_frame()<\/code> \u5c31\u80fd\u62ff\u5230\u4e00\u4e2a <code>AVPacket<\/code>\uff0c\u6240\u4ee5\u9700\u8981\u9996\u5148\u4e86\u89e3\u4e00\u4e0b <code>av_read_frame()<\/code> \u7684\u5185\u90e8\u5b9e\u73b0\u3002\u5728 ffplay.c \u7684 <code>av_read_frame()<\/code> \u6253\u4e00\u4e2a\u65ad\u70b9\uff0c\u7136\u540e step into \u8df3\u8fdb\u53bb\uff0c\u56e0\u4e3a\u662f msvc \u73af\u5883\uff0c\u6240\u4ee5\u53ef\u4ee5\u8df3\u8fdb\u53bb\u52a8\u6001\u5e93\u7684\u5b9e\u73b0\u4ee3\u7801\u3002\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-20-1.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u53d1\u73b0\uff0cwindows \u7684\u73af\u5883\u5e76\u4e0d\u662f\u90a3\u4e48\u7684\u7f8e\u597d\uff0c\u5f88\u591a\u53d8\u91cf\u90fd\u662f not accessible\uff0c\u770b\u4e0d\u5230\u5177\u4f53\u7684\u6570\u636e\uff0c\u6240\u4ee5\u54b1\u4eec\u8fd8\u662f\u5207\u6362\u5230 ubuntu 18\u7684 clion\u73af\u5883\u8fdb\u884c\u8c03\u8bd5\u3002\u8bf7\u9605\u8bfb <a href=\"https:\/\/www.xianwaizhiyin.net\/?p=1497\">\u300a<strong>FFmpeg\uff0cFplay\uff0cclion\u8c03\u8bd5\u73af\u5883\u642d\u5efa<\/strong>\u300b<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u9996\u5148\u63d0\u4e00\u4e2a\u95ee\u9898\uff0cffplay \u64ad\u653e RTMP \u6d41\u7684\u65f6\u5019\uff0c\u80af\u5b9a\u9700\u8981\u901a\u8fc7TCP\u53bb\u8fde\u63a5 \u670d\u52a1\u5668\uff0c\u7136\u540e\u505a RTMP \u63e1\u624b\uff0c\u534f\u5546\u4ea4\u4e92\u7b49\u64cd\u4f5c\u3002\u90a3 ffpaly \u662f\u4ec0\u4e48\u65f6\u5019\u8ddf\u670d\u52a1\u5668\u5efa\u7acb RTMP \u8fde\u63a5\u7684\u5462\uff1f\u5e26\u7740\u8fd9\u4e2a\u7591\u95ee\uff0c\u5f00\u59cb\u7814\u7a76\u3002<\/p>\n\n\n\n<p>\u731c\u6d4b\u5728 <code class=\"prettyprint\" >avformat_open_input()<\/code> \u51fd\u6570\u91cc\u9762\uff0c\u6240\u4ee5\u5728\u8fd9\u4e2a\u51fd\u6570\u7684\u5165\u53e3\u6253\u4e2a\u65ad\u70b9\uff0c\u7ecf\u8fc7\u7814\u7a76 <code>avformat_open_input()<\/code> \u51fd\u6570\u7684\u6d41\u7a0b\u56fe\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-20-2.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4e0a\u56fe\u4e3b\u8981\u6709\u4ee5\u4e0b\u91cd\u70b9\uff1a<\/p>\n\n\n\n<p><strong>\u91cd\u70b9\u4e00\uff1a<\/strong> <code class=\"prettyprint\" >avformat_open_input()<\/code> \u8fd9\u4e2a\u51fd\u6570\u6709\u4e24\u79cd\u4f20\u53c2\u65b9\u5f0f\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><code class=\"prettyprint\" >filename<\/code> \u4e0d\u4e3a NULL\uff0c\u8fd9\u79cd\u60c5\u51b5\u5c31\u662f \u5b57\u7b26\u4e32\u4f20\u53c2\uff0c\u7136\u540e\u4ed6\u5185\u90e8\u5224\u65ad\u662f\u4ec0\u4e48\u7c7b\u4f3c\u7684\u8f93\u5165\u6d41\uff0cMP4\uff0cFLV\uff0c\u8fd8\u662f RTMP\uff0c<\/li><li><code>AVInputFormat<\/code> \u4e0d\u4e3a NULL\uff0c\u8fd9\u79cd\u6307\u5b9a\u683c\u5f0f\u4f20\u53c2\u3002<\/li><\/ol>\n\n\n\n<p><code class=\"prettyprint\" >filename<\/code> \u5b57\u7b26\u4e32\u4f20\u53c2\u65b9\u5f0f\uff0cffmpeg \u5185\u90e8\u4f1a\u8bfb\u53d6\u4e00\u90e8\u5206\u97f3\u89c6\u9891\u6570\u636e\u6765\u5224\u65ad\u662f\u4ec0\u4e48\u7c7b\u578b\uff0c\u5bf9\u4e8e RTMP \u8f93\u5165\uff0c\u5c31\u4f1a\u5efa\u7acbRTMP\u94fe\u63a5\uff0c\u8bfb\u53d6\u4e00\u4e9b\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u4e0d\u8fc7\u4e24\u79cd\u4f20\u53c2\u65b9\u5f0f\u5728\u6548\u7387\u4e0a\u6ca1\u6709\u592a\u5927\u7684\u533a\u522b\uff0c\u867d\u7136\u5b57\u7b26\u4e32\u4f20\u53c2\uff0c\u4f1a\u8bfb\u53d6\u6570\u636e\uff0c\u4f46\u662f\uff0c\u8fd9\u4e9b\u6570\u636e\u4f1a\u7f13\u5b58\u4e0b\u6765 \u7ed9 <code class=\"prettyprint\" >av_read_frame()<\/code> \u51fd\u6570\u5b9e\u73b0\uff0c\u5e76\u4e0d\u662f\u63a2\u6d4b\u5b8c\u8f93\u5165\u6d41\u7c7b\u578b\u5c31\u4e22\u5f03\u4e86\u3002<\/p>\n\n\n\n<p>\u4e0d\u8fc7\u8fd8\u662f\u6709\u70b9\u533a\u522b\uff0c\u5982\u679c\u4f60\u6307\u5b9a\u4e86 <code class=\"prettyprint\" >AVInputFormat<\/code>\uff0cffmpeg \u5185\u90e8\u4f1a\u5c11\u6267\u884c\u5f88\u591a\u5224\u65ad\uff0c\u56e0\u4e3a\u4ed6\u5185\u90e8\u4f1a\u628a \u5927\u90e8\u5206\u7684 \u683c\u5f0f\u90fd\u904d\u5386\u4e00\u904d\u3002\u6240\u4ee5 \u6307\u5b9a <code>AVInputFormat<\/code>\u53ef\u4ee5\u52a0\u5feb\u7a0b\u5e8f\u8fd0\u884c\u901f\u5ea6\u3002<\/p>\n\n\n\n<p><code class=\"prettyprint\" >av_probe_input_format3()<\/code> \u5e76\u6ca1\u6709\u5f00\u59cb\u5efa\u7acb RTMP \u94fe\u63a5\uff0c\u53ea\u662f\u505a\u4e00\u4e0b\u5b57\u7b26\u4e32\u5339\u914d\uff0c\u770b\u770b\u80fd\u4e0d\u80fd\u627e\u5230 \u5bf9\u5e94\u7684 <code>AVInputFormat<\/code>\uff0c\u672c\u6587\u7684\u547d\u4ee4\u6ca1\u6709\u627e\u5230\u3002\u6240\u4ee5\u4ee3\u7801\u4f1a\u7ee7\u7eed\u5f80\u4e0b\u8d70\uff0c\u53bb\u63a2\u6d4b\u627e\u5230 \u5bf9\u5e94\u7684 <code>AVInputFormat<\/code>\uff0c<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p><strong>\u91cd\u70b9\u4e8c\uff1a<\/strong><code class=\"prettyprint\" >ffio_open_whitelist()<\/code> \u4e3a\u4ec0\u4e48\u6709\u767d\u540d\u5355\uff1f<\/p>\n\n\n\n<p>\u8fd9\u4e2a\u662f ffmpeg \u63d0\u4f9b\u4e86\u534f\u8bae\u6269\u5c55\u7684\u529f\u80fd\uff0c\u5982\u679c\u4f60\u60f3\u7528 ffplay \u652f\u6301\u4e00\u4e2a\u65b0\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u9664\u4e86\u4f60\u8981\u5199\u4e00\u4e2a\u8ddf RTMP \u7c7b\u4f3c\u7684\u6a21\u5757\u52a0\u8fdb\u53bb\u4e4b\u5916\uff0c\u8fd8\u8981 \u4f7f\u7528 <code class=\"prettyprint\" >-protocol_whitelist<\/code> \u547d\u4ee4\u884c\u53c2\u6570 \u628a\u8fd9\u4e2a\u534f\u8bae\u52a0\u8fdb\u53bb\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p><strong>\u91cd\u70b9\u4e09\uff1a<\/strong>\u9ed8\u8ba4\u662f \u63a2\u6d4b AVPROBE_PADDING_SIZE \uff0832\u5b57\u8282\uff09 \u8fd9\u4e48\u591a\u97f3\u89c6\u9891\u6570\u636e\uff0c\u4e5f\u5c31\u662f RTMP \u5305\u7684 body \u6570\u636e\u52a0\u8d77\u6765\u8fbe\u5230\u8fd9\u4e2a\u6570\u5b57\u5c31\u505c\u6b62\u63a2\u6d4b\u3002\u4ee3\u7801\u5982\u4e0b:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"747\" height=\"300\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-20-3.png\" alt=\"\" class=\"wp-image-1510\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-20-3.png 747w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-20-3-300x120.png 300w\" sizes=\"auto, (max-width: 747px) 100vw, 747px\" \/><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u884c\u53c2\u6570 <code class=\"prettyprint\" >-probesize 80<\/code> \u8bbe\u7f6e\u63a2\u6d4b\u7684\u6570\u636e\u5927\u5c0f\u3002\u6709\u65f6\u5019\u67d0\u4e9b\u60c5\u51b5\uff0c\u9700\u8981\u66f4\u5927\u7684\u6570\u636e\u624d\u80fd\u731c\u5230\u8f93\u5165\u6d41\u662f\u4ec0\u4e48\u7c7b\u578b\u3002<\/p>\n\n\n\n<p>\u4ece\u4e0a\u56fe\u4ee3\u7801\u53ef\u4ee5\u770b\u5230 \u51fd\u6570 <code class=\"prettyprint\" >init_input()<\/code> \u7684\u6ce8\u91ca\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >\/* Open input file and probe the format if necessary. *\/\nstatic int init_input(AVFormatContext *s, const char *filename,\n                      AVDictionary **options)<\/code><\/pre>\n\n\n\n<p>FFmpeg \u9879\u76ee\u7684\u6ce8\u91ca\u662f\u975e\u5e38\u5b8c\u5584\u7684\uff0c\u4efb\u4f55\u4e00\u4e2a\u51fd\u6570\uff0c\u4f60\u770b\u4e0b\u4ed6\u7684\u6ce8\u91ca\uff0cdebug\u4e00\u4e0b\uff0c\u5c31\u80fd\u641e\u61c2\u8fd9\u4e2a\u51fd\u6570\u4e3b\u8981\u5728\u5e72\u4ec0\u4e48\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u6700\u540e\u5c31\u662f \u6d41\u7a0b\u56fe\u7684\u6700\u540e\u4e00\u4e2a\u8282\u70b9\uff0c\u4e5f\u5c31\u662f <code class=\"prettyprint\" >rtmp_open()<\/code> \u3002<\/p>\n\n\n\n<p><code class=\"prettyprint\" >uc-&gt;prot-&gt;url_open2()<\/code> \u5c31\u662f <code>rtmp_open()<\/code> \uff0cffmpeg \u7684\u591a\u6001\u6a21\u5757\u9694\u79bb\u5b9e\u73b0\uff0c\u7ecf\u5e38\u662f\u4f7f\u7528\u8fd9\u79cd\u51fd\u6570\u6307\u9488\u7684\u65b9\u5f0f\u5b9e\u73b0\u7684\u3002\u540e\u7eed\u4f1a\u5199\u4e00\u7bc7\u6587\u7ae0\uff0c\u8bb2\u89e3\u5982\u4f55\u5728 FFmpeg 4.4 \u7684\u57fa\u7840\u4e0a\u52a0\u4e00\u4e2a\u65b0\u7684\u4f20\u8f93\u534f\u8bae\u3002\u53ef\u4ee5\u5728\u535a\u5ba2\u641c\u7d22\u300aFFmpeg \u4f20\u8f93\u534f\u8bae\u5b9e\u73b0\u300b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u73b0\u5728\u5df2\u7ecf\u627e\u5230 RTMP \u5efa\u7acb\u94fe\u63a5\u7684\u5165\u53e3\uff0c\u4e0b\u4e00\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u89e3 ffpaly RTMP \u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\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\u6216\u8005\u5e0c\u671b\u4ea4\u6d41\u97f3\u89c6\u9891\u6280\u672f\u7684\uff0c\u53ef\u4ee5\u52a0\u6211\u5fae\u4fe1 Loken1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.4 \u6e90\u7801\u4e3a\u51c6\u3002\u672c\u6587\u4e3b\u8981\u8bb2\u89e3 ffplay \u7684 RTMP \u534f\u8bae\u89e3\u6790\uff0c\u64ad\u653e\u3002\u672c\u6587\u4f7f\u7528\u7684 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