{"id":1524,"date":"2022-03-16T11:17:33","date_gmt":"2022-03-16T03:17:33","guid":{"rendered":"https:\/\/www.xianwaizhiyin.net\/?p=1524"},"modified":"2022-06-11T02:16:20","modified_gmt":"2022-06-10T18:16:20","slug":"ffplay%e6%ba%90%e7%a0%81%e5%88%86%e6%9e%90-rtmp_open","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=1524","title":{"rendered":"FFplay\u6e90\u7801\u5206\u6790-rtmp_open"},"content":{"rendered":"\n<p>\u672c\u7cfb\u5217 \u4ee5 ffmpeg4.4 \u6e90\u7801\u4e3a\u51c6\uff0c\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-css-opacity\"\/>\n\n\n\n<p>google_ads_content<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u672c\u6587\u4e3b\u8981\u8bb2\u89e3 <code class=\"prettyprint\" >rtmp_open()<\/code> \u51fd\u6570\u7684\u5b9e\u73b0\uff0cRTMP \u534f\u8bae\u7684\u4ee3\u7801\u90fd\u5728 <code>libavformat\/rtmpproto.c<\/code> \u6587\u4ef6\u91cc\u9762\uff0c\u8bf7\u770b\u4e0b\u9762\u622a\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"955\" height=\"682\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-1.png\" alt=\"\" class=\"wp-image-1527\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-1.png 955w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-1-300x214.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-1-768x548.png 768w\" sizes=\"auto, (max-width: 955px) 100vw, 955px\" \/><\/figure>\n\n\n\n<p>RTMP \u7ecf\u5e38\u4f7f\u7528\u7684\u51fd\u6570\uff0c<code class=\"prettyprint\" >rtmp_open<\/code> \uff08\u5efa\u7acb\u94fe\u63a5\uff09\uff0c<code>rtmp_read<\/code>\uff08\u8bfb\u53d6\u6570\u636e\uff09\uff0c<code>rtmp_write<\/code>\uff0c<code>rtmp_seek<\/code> \uff0c\u8fd9\u4e9b\u51fd\u6570\uff0c\u90fd\u5728\u8fd9\u4e2a\u6587\u4ef6 <code>rtmpproto.c<\/code> \u91cc\u9762\u5b9e\u73b0\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p><code class=\"prettyprint\" >rtmp_open()<\/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-22-2.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4e0a\u9762\u7684\u6d41\u7a0b\u56fe\u6709\u4ee5\u4e0b\u91cd\u70b9\uff1a<\/p>\n\n\n\n<p><strong>\u91cd\u70b9\u4e00\uff1a<\/strong><\/p>\n\n\n\n<p>\u4e0a\u9762\u7684\u6d41\u7a0b\u56fe\u662f\u7b2c\u4e8c\u6b21\u6267\u884c <code class=\"prettyprint\" >ffurl_open_whitelist()<\/code> \u51fd\u6570\uff0c\u7b2c\u4e00\u6b21\u662f\u5904\u7406RTMP\u94fe\u63a5\uff0c\u7b2c\u4e8c\u6b21\u662f\u5904\u7406 TCP\u94fe\u63a5\u3002\u7b2c\u4e8c\u6b21\u7684 parent \u53c2\u6570\u662f\u6709\u503c\u7684\u3002<\/p>\n\n\n\n<p><strong>\u91cd\u70b9\u4e8c\uff1a<\/strong><\/p>\n\n\n\n<p><code class=\"prettyprint\" >ff_connect_parallel()<\/code> \u51fd\u6570\u4f1a\u5c1d\u8bd5\u91cd\u8bd5\uff0c\u53c2\u8003 RFC 8305 \u7684\u6807\u51c6\u3002\u5927\u6982\u5e94\u8be5\u662f 200ms\u540e TCP \u63e1\u624b\u8fd8\u6ca1\u5b8c\u6210\uff0c\u5c31\u4f1a\u7acb\u5373\u65b0\u5efa\u7b2c\u4e8c\u4e2a\u94fe\u63a5\uff0c\u6700\u540e\u54ea\u4e00\u4e2a\u6210\u4e86\u5c31\u7528\u54ea\u4e00\u4e2aTCP\u94fe\u63a5\u3002<\/p>\n\n\n\n<p><strong>\u91cd\u70b9\u4e09\uff1a<\/strong><\/p>\n\n\n\n<p><code class=\"prettyprint\" >rtmp_handshake()<\/code>\u51fd\u6570\u5c31\u662f\u5904\u7406\u63e1\u624b\u4ea4\u4e92\u7684\uff0c\u63a8\u8350\u9605\u8bfb<a href=\"https:\/\/www.xianwaizhiyin.net\/?p=917\">\u300a<strong>RTMP\u534f\u8bae\u5206\u6790-handshake<\/strong>\u300b<\/a><\/p>\n\n\n\n<p><strong>\u91cd\u70b9\u56db\uff1a<\/strong><\/p>\n\n\n\n<p><code class=\"prettyprint\" >ff_url_join()<\/code> \u662f ffmpeg \u7684 URL utility functions\uff0c\u4e5f\u5c31\u662f \u5de5\u5177\u51fd\u6570\uff0c\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684 \u62fc\u63a5 \u534f\u8bae\u76f8\u5173\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u8fd8\u6709 <code class=\"prettyprint\" >get_packet()<\/code> \u662f\u4e2a<strong>\u975e\u5e38\u91cd\u70b9\u7684\u51fd\u6570<\/strong>\u3002\u91cc\u9762\u4e3b\u8981\u5e72\u4e863\u4ef6\u4e8b<\/p>\n\n\n\n<p>1\uff0c\u8c03\u7528 <code class=\"prettyprint\" >rtmp_parse_result()<\/code> \u5904\u7406\u5404\u79cdRTMP\u76f8\u5173\u7684AM\uff0cINVOKE\uff0c\u8ddf\u4ea4\u4e92\u3002<\/p>\n\n\n\n<p>2\uff0c\u8c03 <code class=\"prettyprint\" >handle_metadata()<\/code> \u51fd\u6570 \u5904\u7406 flv \u7684 metadata<\/p>\n\n\n\n<p>3\uff0c\u8c03 <code class=\"prettyprint\" >append_flv_data()<\/code> \u5904\u7406 RTMP \u97f3\u89c6\u9891\u5305\uff0c\u52a0\u5165\u961f\u5217\u3002<\/p>\n\n\n\n<p>\u5728\u4e0a\u9762\u6d41\u7a0b\u56fe\uff0c <code class=\"prettyprint\" >get_packet()<\/code> \u8fd9\u4e2a\u51fd\u6570\u8c03\u7528\u4e86\u4e24\u6b21\uff0c\u7b2c\u4e00\u6b21\u662f\u4e3a\u4e86\u628a RTMP \u94fe\u63a5\u7684\u72b6\u6001\u4ece <code>STATE_HANDSHAKED<\/code> \u8f6c\u6210 <code>STATE_PLAYING<\/code>\uff0c\u7b2c\u4e8c\u6b21\u4f1a\u963b\u585e\u76f4\u5230\u8bfb\u53d6\u5230\u4efb\u4f55\u4e00\u4e2a\u97f3\u89c6\u9891\u5305\uff0c\u6216\u8005flv \u7684metadata\u3002<\/p>\n\n\n\n<p><code class=\"prettyprint\" >append_flv_data()<\/code> \u8fd9\u4e2a\u51fd\u6570\u9700\u8981\u8be6\u7ec6\u8bb2\u89e3\u4e00\u4e0b\uff0c\u56e0\u4e3a\u91cc\u9762\u662f\u5904\u7406\u97f3\u89c6\u9891\u5305\u7684\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"898\" height=\"709\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-3.png\" alt=\"\" class=\"wp-image-1533\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-3.png 898w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-3-300x237.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-3-768x606.png 768w\" sizes=\"auto, (max-width: 898px) 100vw, 898px\" \/><\/figure>\n\n\n\n<p>\u5b9e\u9645\u4e0a\u8fd9\u91cc\u9762\u7684\u64cd\u4f5c\uff0c\u5c31\u662f\u628a \u4e00\u4e2a RTMP \u97f3\u89c6\u9891\u5305\uff08RTMP \u662f\u76f4\u63a5\u4f20\u7684 H264 \u88f8\u6d41\uff09\uff0c\u8f6c\u6210 flv \u7684tag \u683c\u5f0f\uff0c\u7136\u540e\u4e22\u7ed9 flv \u7684\u89e3\u590d\u7528\u5668\u3002\u8fd9\u4e2a\u5176\u5b9e\u8ddf\u8bfb\u53d6\u672c\u5730\u6587\u4ef6\u7684 flv \u6587\u4ef6\u4e00\u6837\u3002<\/p>\n\n\n\n<p>\u4e0b\u56fe\u662f flv \u7684\u683c\u5f0f\uff0c\u53ef\u4ee5\u53c2\u8003\u7740\u770b\u4e0a\u9762\u4ee3\u7801\uff0c\u4e0a\u9762\u7684\u53d8\u91cf <code class=\"prettyprint\" >old_flv_size<\/code> \u6709\u65f6\u5019\u662f 13 \u4e2a\u5b57\u8282\uff0c\u5c31\u662f flv header\uff089\u5b57\u8282\uff09 + flv body \u7684 previous tagsize \uff084\u5b57\u8282\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"581\" height=\"565\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-4.png\" alt=\"\" class=\"wp-image-1534\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-4.png 581w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-4-300x292.png 300w\" sizes=\"auto, (max-width: 581px) 100vw, 581px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u603b\u7ed3\uff0c<code class=\"prettyprint\" >rtmp_open()<\/code> \u51fd\u6570\u505a\u4e86\u4ee5\u4e0b\u4e8b\u60c5\uff1a<\/p>\n\n\n\n<p>1\uff0c\u5efa\u7acb RTMP \u94fe\u63a5\u3002<\/p>\n\n\n\n<p>2\uff0c\u8bfb\u53d6\u5230\u7b2c\u4e00\u4e2a\u97f3\u89c6\u9891\u5305\uff0c\u4e22\u8fdb\u53bb <code class=\"prettyprint\" >RTMPContext *rt<\/code> \u91cc\u9762<\/p>\n\n\n\n<p><code class=\"prettyprint\" >struct RTMPContext<\/code> \u8fd9\u4e2a\u7ed3\u6784\u4f53\u975e\u5e38\u91cd\u8981\uff0c\u638c\u63a7\u4e86 rtmp \u4f1a\u8bdd\u7684\u6574\u4e2a\u5468\u671f\u3002\u5148\u770b\u4ee3\u7801\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"773\" height=\"181\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-5.png\" alt=\"\" class=\"wp-image-1537\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-5.png 773w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-5-300x70.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-5-768x180.png 768w\" sizes=\"auto, (max-width: 773px) 100vw, 773px\" \/><\/figure>\n\n\n\n<p>\u4ece\u4e0a\u9762\u53ef\u4ee5\u770b\u5230 \u53d8\u91cf <code class=\"prettyprint\" >RTMPContext *rt<\/code> \u662f\u5957\u5728 <code>URLContext<\/code> \u91cc\u9762\u7684\u3002\u4e0b\u9762\u8bb2\u4e00\u4e0b <code>rtmp_open()<\/code> \u6267\u884c\u5b8c\u4e4b\u540e\uff0c\u53d8\u91cf <code>rt<\/code> \u4e3b\u8981\u6709\u54ea\u4e9b\u5b57\u6bb5\u88ab\u6539\u53d8\u4e86\u3002\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"932\" height=\"696\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-6.png\" alt=\"\" class=\"wp-image-1538\" srcset=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-6.png 932w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-6-300x224.png 300w, https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-6-768x574.png 768w\" sizes=\"auto, (max-width: 932px) 100vw, 932px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p><strong>\u6700\u540e\u63d0\u4e00\u70b9\uff0cFFplay \u5bf9\u64ad\u653e RTMP \u505a\u4e86\u5f88\u591a\u517c\u5bb9\u7684\u5904\u7406\uff0c\u4f8b\u5982\u5373\u4f7f\u670d\u52a1\u5668\u63a8\u7684RTMP \u6570\u636e\uff0cflv \u5934\u90e8\u6570\u636e\u67d0\u4e9b\u5b57\u6bb5\u7f3a\u5c11\u6216\u8005\u4e0d\u5bf9\uff0cFFplay \u5185\u90e8\u4e5f\u4f1a\u7ea0\u6b63\u8fc7\u6765\u3002\u4f30\u8ba1\u662f\u65e9\u671f\u6709\u4e9b\u4eba\u4e0d\u6309\u6807\u51c6\u5b9e\u73b0 RTMP \u670d\u52a1\u5668<\/strong><\/p>\n\n\n\n<p>\u6269\u5c55\u77e5\u8bc6\uff1a<\/p>\n\n\n\n<p>1\uff0c<code class=\"prettyprint\" >struct RTMPContext<\/code> \u6709\u4e24\u4e2a\u6bd4\u8f83\u6709\u8da3\u7684\u5b57\u6bb5\uff0c<code>has_audio<\/code>\uff0c<code>has_video<\/code>\uff0c\u4ee3\u8868\u6709\u6ca1\u6536\u5230\u97f3\u9891\u6216\u89c6\u9891\u7684 RTMP \u5305\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\uff0c\u4e3b\u8981\u8bb2\u89e3 ffplay \u7684 RTMP \u534f\u8bae\u89e3\u6790\uff0c\u64ad\u653e\u3002\u672c\u6587\u4f7f\u7528\u7684\u547d\u4ee4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-1524","post","type-post","status-publish","format-standard","hentry","category-ffplay"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>FFplay\u6e90\u7801\u5206\u6790-rtmp_open - \u5f26\u5916\u4e4b\u97f3<\/title>\n<meta name=\"description\" content=\"FFplay\u6e90\u7801\u5206\u6790-rtmp_open\" \/>\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=1524\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FFplay\u6e90\u7801\u5206\u6790-rtmp_open - \u5f26\u5916\u4e4b\u97f3\" \/>\n<meta property=\"og:description\" content=\"FFplay\u6e90\u7801\u5206\u6790-rtmp_open\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.xianwaizhiyin.net\/?p=1524\" \/>\n<meta property=\"og:site_name\" content=\"\u5f26\u5916\u4e4b\u97f3\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-16T03:17:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-06-10T18:16:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/03\/ffplay-22-1.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"loken\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" 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