{"id":1254,"date":"2019-06-10T07:50:29","date_gmt":"2019-06-10T07:50:29","guid":{"rendered":"https:\/\/www.ipcpu.com\/?p=1254"},"modified":"2019-11-04T10:51:14","modified_gmt":"2019-11-04T10:51:14","slug":"http-live-streaming","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2019\/06\/http-live-streaming\/","title":{"rendered":"\u76f4\u64ad\/\u70b9\u64ad\u4e2dHTTP Live Streaming(HLS)\u534f\u8bae\u7684\u7b80\u4ecb\u4e0e\u4f7f\u7528"},"content":{"rendered":"

\u4e00\u3001\u76f4\u64ad\/\u70b9\u64ad\u6982\u8ff0<\/h2>\n

2016\u5e74\u662f\u88ab\u79f0\u4f5c\u76f4\u64ad\u5143\u5e74\uff0c\u5404\u79cd\u76f4\u64ad\u5e94\u7528\u767e\u82b1\u9f50\u653e\uff0c\u7ecf\u8fc7\u51e0\u5e74\u7684\u53d1\u73b0\u5df2\u7ecf\u65e5\u8d8b\u6210\u719f\uff0c\u4f46\u5176\u5e94\u7528\u6280\u672f\u57fa\u672c\u5982\u4e0b\u56fe\u6240\u793a
\n<\/p>\n

\u63a8\u6d41 \u662f\u6307\u5c06\u91c7\u96c6\u7684\u5185\u5bb9\u4f20\u5230\u670d\u52a1\u5668\u7684\u8fc7\u7a0b<\/p>\n

\u62c9\u6d41 \u662f\u6307\u7528\u6237\u64ad\u653e\u8be5\u5185\u5bb9\u7684\u8fc7\u7a0b<\/p><\/blockquote>\n

\u5982\u679c\u53ea\u8003\u8651\u62c9\u6d41\u8fc7\u7a0b\uff0c\u4e5f\u53ef\u4ee5\u79f0\u4f5c\u70b9\u64ad\uff0c\u6bd4\u5982\u7231\u5947\u827a\u3001\u817e\u8baf\u89c6\u9891\u7b49\u89c6\u9891\u7c7b\u7f51\u7ad9\u3002<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u770b\u5230HLS\u534f\u8bae\u662f\u62c9\u6d41\u8fc7\u7a0b\u4e2d\u5e38\u7528\u7684\u534f\u8bae\u3002<\/p>\n

\u4e8c\u3001HLS\u7b80\u4ecb<\/h2>\n

HTTP Live Streaming\uff08\u7f29\u5199\u662f HLS \uff09\u662f\u4e00\u4e2a\u7531\u82f9\u679c\u516c\u53f8\u63d0\u51fa\u7684\u57fa\u4e8e HTTP \u7684\u6d41\u5a92\u4f53\u7f51\u7edc\u4f20\u8f93\u534f\u8bae\u3002\u662f\u82f9\u679c\u516c\u53f8 QuickTime X \u548c iPhone \u8f6f\u4ef6\u7cfb\u7edf\u7684\u4e00\u90e8\u5206\u3002\u5b83\u7684\u5de5\u4f5c\u539f\u7406\u662f\u628a\u6574\u4e2a\u6d41\u5206\u6210\u4e00\u4e2a\u4e2a\u5c0f\u7684\u57fa\u4e8e HTTP \u7684\u6587\u4ef6\u6765\u4e0b\u8f7d\uff0c\u6bcf\u6b21\u53ea\u4e0b\u8f7d\u4e00\u4e9b\u3002\u5f53\u5a92\u4f53\u6d41\u6b63\u5728\u64ad\u653e\u65f6\uff0c\u5ba2\u6237\u7aef\u53ef\u4ee5\u9009\u62e9\u4ece\u8bb8\u591a\u4e0d\u540c\u7684\u5907\u7528\u6e90\u4e2d\u4ee5\u4e0d\u540c\u7684\u901f\u7387\u4e0b\u8f7d\u540c\u6837\u7684\u8d44\u6e90\uff0c\u5141\u8bb8\u6d41\u5a92\u4f53\u4f1a\u8bdd\u9002\u5e94\u4e0d\u540c\u7684\u6570\u636e\u901f\u7387\u3002\u5728\u5f00\u59cb\u4e00\u4e2a\u6d41\u5a92\u4f53\u4f1a\u8bdd\u65f6\uff0c\u5ba2\u6237\u7aef\u4f1a\u4e0b\u8f7d\u4e00\u4e2a\u5305\u542b\u5143\u6570\u636e\u7684 extended M3U (m3u8)playlist \u6587\u4ef6\uff0c\u7528\u4e8e\u5bfb\u627e\u53ef\u7528\u7684\u5a92\u4f53\u6d41\u3002<\/p>\n

\u7279\u70b9\uff1a<\/p>\n

\u82f9\u679c\u5f00\u53d1\uff0c\u80cc\u666f\u5f3a\u5927\uff0cApple\u548c\u5b89\u5353\u90fd\u652f\u6301
\n\u57fa\u4e8eHTTP\u534f\u8bae\u4f20\u8f93\uff0c\u53ef\u4ee5\u7528CDN\u8fdb\u884c\u5206\u53d1
\n\u81ea\u9002\u5e94\u7801\u7387\u6d41\u64ad\uff0c\u5ba2\u6237\u7aef\u4f1a\u6839\u636e\u7f51\u7edc\u72b6\u51b5\u81ea\u52a8\u9009\u62e9\u4e0d\u540c\u7801\u7387\u7684\u89c6\u9891
\n\u7528 m3u8 \u6587\u4ef6\u4f5c\u4e3a\u7d22\u5f15
\n\u89c6\u9891\u5206\u6bb5\uff0c\u53ef\u4ee5\u62d6\u52a8\uff0c\u6bcf\u6b21\u53ea\u4e0b\u8f7d\u4e00\u5c0f\u90e8\u5206\u6570\u636e(10\u79d2)
\n\u89c6\u9891\u7684\u5c01\u88c5\u683c\u5f0f\u662fTS\uff0c\u89c6\u9891\u7684\u7f16\u7801\u683c\u5f0f\u4e3aH264,\u97f3\u9891\u7f16\u7801\u683c\u5f0f\u4e3aMP3\u3001AAC\u6216\u8005AC-3\u3002<\/p><\/blockquote>\n

\u7f3a\u70b9\uff1a<\/p>\n

\u5ef6\u8fdf\u4f1a\u6bd4\u8f83\u9ad8<\/p><\/blockquote>\n

\u4e09\u3001HLS\u539f\u7406<\/h2>\n

3.1 \u5de5\u4f5c\u6a21\u5f0f<\/h4>\n

\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u5148\u4e0b\u8f7d M3U8 \u6587\u4ef6\uff0c\u7136\u540e\u62ff\u5230\u4e00\u7ea7\u548c\u4e8c\u7ea7\u7684 Index \u6587\u4ef6\uff0c\u901a\u8fc7 Index \u6587\u4ef6\u53d6\u5f97 TS \u6587\u4ef6\u4e0b\u8f7d\u5730\u5740\uff0c\u8fd9\u6837\u5ba2\u6237\u7aef\u5c31\u53ef\u4ee5\u6309\u987a\u5e8f\u4e0b\u8f7d TS \u89c6\u9891\u6587\u4ef6\u5e76\u8fde\u7eed\u64ad\u653e\u3002
\n<\/p>\n

3.2 m3u8\u6587\u4ef6\u683c\u5f0f\uff08\u5355\u7801\u7387\u9002\u914d\u6d41\uff09<\/h3>\n
\n
#EXTM3U\r\n#EXT-X-VERSION:3\r\n#EXT-X-ALLOW-CACHE:YES\r\n#EXT-X-MEDIA-SEQUENCE:2\r\n#EXT-X-TARGETDURATION:16\r\n#EXTINF:14.357\uff0cno desc\r\nlivestream-2.ts\r\n#EXTINF:15.617\uff0cno desc\r\nlivestream-3.ts\r\n#EXTINF:14.358\uff0cno desc\r\nlivestream-4.ts\r\n#EXTINF:15.618\uff0cno desc\r\nlivestream-5.ts<\/code><\/pre>\n<\/div>\n
3.3 \u64ad\u653e\u6a21\u5f0f<\/h4>\n
\u70b9\u64ad<\/strong> \u5c31\u662f\u5f53\u524d\u65f6\u95f4\u70b9\u53ef\u4ee5\u83b7\u53d6\u5230\u6240\u6709 index \u6587\u4ef6\u548c TS \u6587\u4ef6\uff0c\u4e8c\u7ea7 index \u6587\u4ef6\u4e2d\u8bb0\u5f55\u4e86\u6240\u6709 TS \u6587\u4ef6\u7684\u5730\u5740\u3002\u8fd9\u79cd\u6a21\u5f0f\u5141\u8bb8\u5ba2\u6237\u7aef\u8bbf\u95ee\u5168\u90e8\u5185\u5bb9\u3002<\/p>\n
\u76f4\u64ad<\/strong> \u5c31\u662f\u5b9e\u65f6\u751f\u6210 M3u8 \u548c TS \u6587\u4ef6\u3002\u5b83\u7684\u7d22\u5f15\u6587\u4ef6\u4e00\u76f4\u5904\u4e8e\u52a8\u6001\u53d8\u5316\u7684\uff0c\u64ad\u653e\u7684\u65f6\u5019\u9700\u8981\u4e0d\u65ad\u4e0b\u8f7d\u4e8c\u7ea7 index \u6587\u4ef6\uff0c\u4ee5\u83b7\u5f97\u6700\u65b0\u751f\u6210\u7684 TS \u6587\u4ef6\u64ad\u653e\u89c6\u9891\u3002\u5982\u679c\u4e00\u4e2a\u4e8c\u7ea7 index \u6587\u4ef6\u7684\u672b\u5c3e\u6ca1\u6709 #EXT-X-ENDLIST \u6807\u5fd7\uff0c\u8bf4\u660e\u5b83\u662f\u4e00\u4e2a Live \u89c6\u9891\u6d41\u3002(\u6bd4\u5982IPTV\u7535\u89c6\uff0chttp:\/\/ivi.bupt.edu.cn\/hls\/cctv1hd.m3u8<\/a>)<\/p><\/blockquote>\n
\u56db\u3001\u4f7f\u7528ffmpeg\u521b\u5efaHLS<\/h2>\n
\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u547d\u4ee4<\/p>\n
\n
mkdir -p __ABC.mp4__\r\nffmpeg -i ABC.mp4 -c copy -bsf:v h264_mp4toannexb -hls_time 6 -hls_list_size 0 -hls_segment_filename \"__ABC.mp4__\/%04d.ts\" \"__ABC.mp4__\/video.m3u8\" > \/dev\/null 2>&1<\/code><\/pre>\n<\/div>\n
\u521b\u5efa\u5b8c\u6210\u540e\u7684m3u8\u548cts\u6587\u4ef6\u53ef\u4ee5\u4f7f\u7528Html5\u7684dplayer\u76f4\u63a5\u64ad\u653e<\/p>\n
\u4e94\u3001HLS\u7684\u52a0\u5bc6\u548c\u9632\u76d7\u94fe<\/h2>\n
\u5728\u4e00\u4e9b\u70b9\u64ad\u9700\u8981\u6536\u8d39\u7684\u7f51\u7ad9\uff0c\u6bd4\u5982\u7231\u5947\u827a\uff0c\u82b1\u4e86\u94b1\u4e70\u7684\u7248\u6743\uff0c\u89c6\u9891\u662f\u4e0d\u80fd\u968f\u4fbf\u4e0b\u8f7d\u7684\uff0c\u52a0\u5bc6\u548c\u9632\u76d7\u94fe\u6210\u4e86\u4e00\u9879\u91cd\u8981\u6280\u672f\u3002<\/p>\n
HLS\u652f\u6301AES-128\u65b9\u5f0f\u52a0\u5bc6\uff0c\u53ea\u9700\u8981\u5728ffmpeg\u5207\u7247\u662f\u52a0\u4e0a\u5bc6\u94a5\uff0c\u5e76\u5728m3u8\u6587\u4ef6\u91cc\u6307\u5b9a\u5bc6\u94a5\u5c31\u53ef\u4ee5<\/p>\n
\n
#EXT-X-KEY:METHOD=AES-128,URI=\"\/hls\/key.key\"<\/code><\/pre>\n<\/div>\n
\u4f46\u8fd9\u6837\u7684\u8bdd\uff0c\u5ba2\u6237\u7aef\u53ef\u4ee5\u770b\u5230key\u7684\u5185\u5bb9\uff0c\u610f\u4e49\u4e0d\u5927\uff0c\u592a\u4e0d\u5b89\u5168\u4e86\u3002<\/p>\n
\u60f3\u8981\u771f\u6b63\u5b89\u5168\u53ef\u4ee5\u505a\u6210\u52a8\u6001\u5bc6\u94a5\uff0c\u6839\u636e\u7528\u6237id\u3001\u6d4f\u89c8\u5668UA\u3001cookie\u7b49\u7efc\u5408\u8ba1\u7b97\uff0c\u5b9e\u65f6\u751f\u6210\u5bc6\u94a5\uff0c\u5e76\u4e14\u6bcf\u6bb5\u89c6\u9891\u5bc6\u94a5\u53ef\u4ee5\u4e0d\u4e00\u81f4\uff0c\u4e0d\u540c\u7684\u65f6\u95f4\u5bc6\u94a5\u4e5f\u4e0d\u4e00\u81f4\u3002\u5982\u4e0b\u56fe\uff0c\u52a8\u6001\u5bc6\u94a5\u7684\u65b9\u5f0f\u6210\u672c\u5f88\u9ad8\u3002\u6d89\u53ca\u5bc6\u94a5\u7684\u52a8\u6001\u83b7\u53d6\uff0c\u53ef\u80fd\u6d89\u53ca\u5230\u89c6\u9891\u5b9e\u65f6\u52a0\u5bc6\u3002
\n<\/p>\n
\u9632\u76d7\u94fe\u4e00\u822c\u6839\u636e\u7528\u6237\u4fe1\u606f(\u6bd4\u5982\u65f6\u95f4\u6233\u3001\u7528\u6237id\u3001\u6d4f\u89c8\u5668UA\u3001cookie\u3001\u7528\u6237IP\u5730\u5740)\u901a\u8fc7\u4e00\u5b9a\u7684\u7b97\u6cd5\u751f\u6210\u4e00\u4e32KEY\uff0c\u4e0e\u670d\u52a1\u5668\u5bf9\u6bd4\uff0c\u5982\u679cKEY\u76f8\u540c\u5c31\u5141\u8bb8\u8bbf\u95ee\uff0cKEY\u4e00\u822c\u6709\u65f6\u95f4\u9650\u5236\uff0c\u8fc7\u4e86\u9650\u5236\u65f6\u95f4\u5c31\u65e0\u6548\u4e86\uff0c\u73b0\u5728\u7684CDN\u5bf9\u4e8e\u9632\u76d7\u94fe\u652f\u6301\u7684\u5f88\u597d\uff0c\u53ef\u4ee5\u5145\u5206\u5229\u7528CDN\u9274\u6743\u673a\u5236\u3002<\/p>\n
\u4e94\u3001\u65b0\u56fd\u9645\u6807\u51c6DASH\u534f\u8bae<\/h2>\n
DASH\uff08MPEG-DASH\uff09\u662f Dynamic Adaptive Streaming over HTTP\u7684\u7f29\u5199\uff0c\u662f\u56fd\u9645\u6807\u51c6\u7ec4 MPEG 2014\u5e74\u63a8\u51fa\u7684\u6280\u672f\u6807\u51c6\uff0c\u4e3b\u8981\u76ee\u6807\u662f\u5f62\u6210IP\u7f51\u7edc\u627f\u8f7d\u5355\u4e00\u683c\u5f0f\u7684\u6d41\u5a92\u4f53\u5e76\u63d0\u4f9b\u9ad8\u6548\u4e0e\u9ad8\u8d28\u91cf\u670d\u52a1\u7684\u7edf\u4e00\u65b9\u6848\uff0c\u89e3\u51b3\u591a\u5236\u5f0f\u4f20\u8f93\u65b9\u6848(HTTP Live Streaming\uff0cMicrosoft Smooth Streaming\uff0cHTTP Dynamic Streaming)\u5e76\u5b58\u683c\u5c40\u4e0b\u7684\u5b58\u50a8\u4e0e\u670d\u52a1\u80fd\u529b\u6d6a\u8d39\u3001\u8fd0\u8425\u9ad8\u6210\u672c\u4e0e\u590d\u6742\u5ea6\u3001\u7cfb\u7edf\u95f4\u4e92\u64cd\u4f5c\u5f31\u7b49\u95ee\u9898.<\/p>\n
DASH\u662f\u57fa\u4e8eHTTP\u7684\u52a8\u6001\u81ea\u9002\u5e94\u7684\u6bd4\u7279\u7387\u6d41\u6280\u672f\uff0c\u548cHLS\uff0cHDS\u6280\u672f\u7c7b\u4f3c\uff0c\u90fd\u662f\u628a\u89c6\u9891\u5206\u5272\u6210\u4e00\u5c0f\u6bb5\u4e00\u5c0f\u6bb5\uff0c\u901a\u8fc7HTTP\u534f\u8bae\u8fdb\u884c\u4f20\u8f93\uff0c\u5ba2\u6237\u7aef\u5f97\u5230\u4e4b\u540e\u8fdb\u884c\u64ad\u653e\uff1b\u4e0d\u540c\u7684\u662fMPEG-DASH\u652f\u6301MPEG-2 TS\u3001MP4\u7b49\u591a\u79cd\u683c\u5f0f\uff0c\u53ef\u4ee5\u5c06\u89c6\u9891\u6309\u7167\u591a\u79cd\u7f16\u7801\u5207\u5272\uff0c\u4e0b\u8f7d\u4e0b\u6765\u7684\u5a92\u4f53\u683c\u5f0f\u65e2\u53ef\u4ee5\u662fts\u6587\u4ef6\u4e5f\u53ef\u4ee5\u662fmp4\u6587\u4ef6\uff0c\u6240\u4ee5\u5f53\u5ba2\u6237\u7aef\u52a0\u8f7d\u89c6\u9891\u65f6\uff0c\u6309\u7167\u5f53\u524d\u7684\u7f51\u901f\u548c\u652f\u6301\u7684\u7f16\u7801\u52a0\u8f7d\u76f8\u5e94\u7684\u89c6\u9891\u7247\u6bb5\u8fdb\u884c\u64ad\u653e\u3002<\/p>\n
\u56fd\u5185\u7684\u54d4\u54e9\u54d4\u54e9\u4f7f\u7528\u4e86DASH\u534f\u8bae\u3002<\/p>\n
\u4e0eHLS\u534f\u8bae\u7684m3u8\u7d22\u5f15\u6587\u4ef6\u7c7b\u4f3c\uff0cDASH\u534f\u8bae\u4e5f\u63d0\u4f9b\u4e86MPD(Media Presentation Description)\u63cf\u8ff0\u6587\u4ef6\uff08XML\u683c\u5f0f\uff09\u6765\u5bf9\u5a92\u4f53\u6d41\u7684\u4e0b\u8f7d\u5730\u5740\u3001\u5206\u8fa8\u7387\u3001\u7801\u7387\u3001\u65f6\u957f\u3001\u5404\u4e2a\u5206\u7247\u3001\u7f16\u7801\u65b9\u5f0f\u7b49\u8fdb\u884c\u4e86\u89c4\u5b9a\u3002<\/p>\n
DASH\u7684\u5206\u7247(Segment)\u4e2d\u53ef\u4ee5\u5305\u542bmp4\u6587\u4ef6(fMP4\uff0c\u6587\u4ef6\u6269\u5c55\u540d\u901a\u5e38\u4e3a.m4s\u6216\u76f4\u63a5\u7528.mp4)\uff0c\u4e5f\u53ef\u4ee5\u5305\u542bTS\u6587\u4ef6\uff0c\u4f46\u6574\u4e2a\u6807\u51c6\u66f4\u52a0prefer\u4f7f\u7528\u5206\u7247\u7684mp4\u6587\u4ef6\u3002<\/p>\n
<\/p>\n
\u53c2\u8003\u8d44\u6599<\/h2>\n
http:\/\/billchan.me\/2019\/04\/27\/livestreamprotocol\/<\/a>
\nhttps:\/\/github.com\/Pearlulu\/h5ai_dplayer_hls<\/a>
\nhttps:\/\/zhuanlan.zhihu.com\/p\/69184805<\/a><\/p>\n
 <\/p>\n
<\/div>\n
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<\/div>\n
<\/div>\n
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\n
<\/div>\n
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 <\/p>\n
\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aIPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> » \u76f4\u64ad\/\u70b9\u64ad\u4e2dHTTP Live Streaming(HLS)\u534f\u8bae\u7684\u7b80\u4ecb\u4e0e\u4f7f\u7528<\/a><\/p>","protected":false},"excerpt":{"rendered":"
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