{"id":44593,"date":"2023-12-22T00:59:42","date_gmt":"2022-12-17T14:07:22","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e7%94%a8golang%e7%bc%96%e5%86%99%e4%ba%86hls%e5%ae%a2%e6%88%b7%e7%ab%af%e3%80%82\/"},"modified":"2024-05-04T14:44:40","modified_gmt":"2024-05-04T06:44:40","slug":"%e6%88%91%e7%94%a8golang%e7%bc%96%e5%86%99%e4%ba%86hls%e5%ae%a2%e6%88%b7%e7%ab%af%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e7%94%a8golang%e7%bc%96%e5%86%99%e4%ba%86hls%e5%ae%a2%e6%88%b7%e7%ab%af%e3%80%82\/","title":{"rendered":"\u6211\u7528golang\u7f16\u5199\u4e86HLS\u5ba2\u6237\u7aef"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u8fd9\u7bc7\u6587\u7ae0\u662fSafe\u682a\u5f0f\u4f1a\u793e2022\u5e7412\u670812\u65e5Advent Calendar\u7684\u4e00\u7bc7\u6587\u7ae0\u3002<\/p>\n

\u6211\u4eec\u516c\u53f8\u63d0\u4f9b\u76d1\u63a7\u6444\u50cf\u5934\u7684\u4e91\u670d\u52a1\uff0c\u5e76\u4e14\u8d1f\u8d23\u89c6\u9891\u4f20\u8f93\u7684\u5b9e\u65bd\u3002\u76ee\u524d\u6211\u4eec\u6709\u4e09\u79cd\u79cd\u7c7b\uff08HLS\uff0cWebRTC\uff0cYouTube Live\uff09\u3002\u8fd9\u6b21\u6211\u6709\u673a\u4f1a\u5728golang\u4e2d\u5b9e\u73b0\u5176\u4e2d\u4e00\u79cd\uff0c\u5373HLS\u5ba2\u6237\u7aef\uff0c\u73b0\u5728\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0b\u3002<\/p>\n

\u8fd9\u662f\u5df2\u7ecf\u5b9e\u73b0\u7684HLS\u5ba2\u6237\u7aef\u3002<\/p>\n

HLS \u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h1>\n

HLS\u662fHTTP Live Streaming\u7684\u7f29\u5199\uff0c\u662f\u4e00\u79cd\u7528\u4e8e\u5728HTTP\u4e0a\u8fdb\u884c\u6d41\u5a92\u4f53\u4f20\u8f93\u7684\u534f\u8bae\u3002\u5176\u57fa\u672c\u539f\u7406\u5e76\u4e0d\u590d\u6742\uff0c\u670d\u52a1\u5668\u4f1a\u5c06\u89c6\u9891\uff08\u753b\u9762\u548c\u97f3\u9891\uff09\u5206\u5272\u6210\u4e00\u5b9a\u7684\u5355\u5143\uff0c\u5ba2\u6237\u7aef\u4f1a\u4e0b\u8f7d\u8fd9\u4e9b\u5355\u5143\u5e76\u8fdb\u884c\u64ad\u653e\u3002\u4e3a\u4e86\u80fd\u591f\u77e5\u9053\u5e94\u8be5\u4e0b\u8f7d\u591a\u4e45\u7684\u89c6\u9891\u624d\u591f\uff0c\u9700\u8981\u77e5\u9053\u89c6\u9891\u6587\u4ef6\u7684\u6570\u91cf\u548c\u64ad\u653e\u65f6\u95f4\u7b49\u4fe1\u606f\u3002\u56e0\u6b64\uff0c\u8fd9\u4e9b\u4fe1\u606f\u4f1a\u88ab\u4fdd\u5b58\u5728\u79f0\u4e3a\u64ad\u653e\u5217\u8868\u7684\u6587\u672c\u6587\u4ef6\u4e2d\uff0c\u9996\u5148\u83b7\u53d6\u64ad\u653e\u5217\u8868\uff0c\u7136\u540e\u518d\u8fdb\u884c\u89c6\u9891\u7684\u4e0b\u8f7d\u3002<\/p>\n

\"undefined\"<\/div>\n

\u8d5b\u83f2\u7684HLS<\/h1>\n

HLS\u6709\u4e24\u79cd\u7c7b\u578b\uff0c\u5373\u70b9\u64ad\u6d41\u5a92\u4f53\u548c\u76f4\u64ad\u6d41\u5a92\u4f53\uff0c\u6211\u4eec\u516c\u53f8\u91c7\u7528\u7684\u662f\u76f4\u64ad\u6d41\u5a92\u4f53\u3002
\n\u6b64\u5916\uff0cHLS\u8fd8\u5177\u6709\u81ea\u9002\u5e94\u6bd4\u7279\u7387\u6d41\u5a92\u4f53\u529f\u80fd\uff0c\u53ef\u4ee5\u6839\u636e\u5ba2\u6237\u7aef\u7684\u663e\u793a\u5c3a\u5bf8\u548c\u7f51\u7edc\u5e26\u5bbd\u7b49\u6761\u4ef6\u5207\u6362\u4e0b\u8f7d\u89c6\u9891\u7684\u8d28\u91cf\u3002
\n\u81ea\u9002\u5e94\u6bd4\u7279\u7387\u6d41\u5a92\u4f53\u529f\u80fd\u672c\u8eab\u5c31\u5f88\u5438\u5f15\u4eba\uff0c\u4f46HLS\u6700\u5927\u7684\u4f18\u52bf\u662f\u652f\u6301\u7684\u8bbe\u5907\u7c7b\u578b\u591a\u3002
\n\u6b64\u6b21\u6211\u4eec\u5b9e\u65bd\u7684HLS\u5ba2\u6237\u7aef\u662f\u76f4\u64ad\u6d41\u5a92\u4f53\u548c\u5355\u4e00\u6d41\u5a92\u4f53\u7684HLS\u5ba2\u6237\u7aef\u3002<\/p>\n

\u52a8\u529b l\u00ec)<\/h1>\n

\u4f5c\u4e3aOSS\u7684HLS\u5ba2\u6237\u7aef\u5b9e\u73b0\uff0c\u4f8b\u5982\u6709hls.js\u548cffmpeg\u7b49\u3002\u5982\u679c\u6709\u663e\u793a\u8bbe\u5907\uff0c\u50cf\u6d4f\u89c8\u5668\u4e4b\u7c7b\u7684\uff0c\u66f4\u5e38\u9009\u62e9hls.js\u4f5c\u4e3a\u9009\u9879\u3002\u4f46\u662f\uff0c\u5982\u679c\u60f3\u83b7\u53d6\u6211\u4eec\u516c\u53f8\u76f8\u673a\u7684\u5f71\u50cf\u5e76\u8fdb\u884c\u81ea\u5df1\u7684\u5206\u6790\uff0chls.js\u4e0d\u9002\u7528\uff0c\u56e0\u4e3a\u5b83\u662f\u4e3a\u663e\u793a\u800c\u8bbe\u8ba1\u7684\u3002\u90a3\u4e48\u8be5\u600e\u4e48\u529e\u5462\uff1f\u6211\u8ba4\u4e3affmpeg\u7b49\u53ef\u4ee5\u4f5c\u4e3a\u9009\u9879\u3002\u4e0d\u8fc7\uff0c\u7531\u4e8effmpeg\u5177\u6709\u76f8\u5bf9\u8f83\u591a\u7684\u529f\u80fd\uff0c\u4ec5\u4e3a\u4e86HLS\u800c\u91c7\u7528ffmpeg\u53ef\u80fd\u6709\u4e9b\u8fc7\u5ea6\uff0c\u5e76\u4e14\u53ef\u80fd\u7531\u4e8e\u8bb8\u53ef\u8bc1\u95ee\u9898\u800c\u4e0d\u5bb9\u6613\u91c7\u7528\u3002\u8003\u8651\u5230\u8fd9\u79cd\u60c5\u51b5\uff0c\u56e0\u4e3a\u5355\u4e00\u7684HLS\u76f4\u64ad\u76f8\u5bf9\u8f83\u7b80\u5355\uff0c\u6240\u4ee5\u6211\u60f3\u5c1d\u8bd5\u5199\u4e00\u4e0b\u3002<\/p>\n

\u4e3a\u4ec0\u4e48\u8981\u9009\u62e9Go\u8bed\u8a00\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h1>\n

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\u53e6\u4e00\u65b9\u9762\uff0c\u5904\u7406\u89c6\u9891\u90e8\u5206\u901a\u5e38\u9700\u8981\u66f4\u9ad8\u7684\u6027\u80fd\u8981\u6c42\uff0c\u56e0\u6b64\u5728\u8fc7\u53bb\u6211\u4eec\u4e3b\u8981\u4f7f\u7528Java\u3001C++\u7b49\u8fdb\u884c\u7f16\u5199\uff0c\u800c\u5728\u6700\u8fd1\u6211\u4eec\u5f00\u59cb\u91c7\u7528Go\u8bed\u8a00\u3002\u53e6\u5916\uff0c\u6211\u4eec\u4e5f\u5728API\u670d\u52a1\u5668\u7684\u67d0\u4e9b\u90e8\u5206\u91c7\u7528\u4e86Go\u8bed\u8a00\u3002\u7531\u4e8e\u8fd9\u6837\u7684\u80cc\u666f\uff0c\u6211\u4eec\u6709\u66f4\u591a\u673a\u4f1a\u63a5\u89e6\u5230Go\u8bed\u8a00\uff0c\u540c\u65f6\u6211\u4eec\u7684HLS\u6d41\u5a92\u4f53\u670d\u52a1\u5668\u4e5f\u662f\u7528Go\u8bed\u8a00\u7f16\u5199\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u8003\u8651\u5c1d\u8bd5\u4f7f\u7528Go\u8bed\u8a00\u6765\u7f16\u5199\u5ba2\u6237\u7aef\u3002<\/p>\n

\u5b9e\u9645\u7684\u6b4c\u5355 de<\/h1>\n

\u4e0b\u4e00\u6b65\uff0c\u6211\u4eec\u5c06\u68c0\u67e5\u6211\u4eec\u516c\u53f8\u4eceHLS\u670d\u52a1\u5668\u4f20\u8f93\u7684\u64ad\u653e\u5217\u8868\uff0c\u5e76\u5bf9\u5176\u4e2d\u7684\u4e3b\u8981\u5185\u5bb9\u8fdb\u884c\u786e\u8ba4\u3002
\n\u6709\u5173\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605RFC8216\u3002<\/p>\n

#EXTM3U\r\n#EXT-X-VERSION:3\r\n#EXT-X-MEDIA-SEQUENCE:0\r\n#EXT-X-ALLOW-CACHE:NO\r\n#EXT-X-TARGETDURATION:3\r\n#EXTINF:2.266667,\r\nstream_0.ts\r\n<\/code><\/pre>\n
#EXT-X-MEDIA-SEQUENCE: \u8be5\u64ad\u653e\u5217\u8868\u6587\u4ef6\u4e2d\u663e\u793a\u7684\u7b2c\u4e00\u4e2a\u5a92\u4f53\u7247\u6bb5\u7684\u5a92\u4f53\u5e8f\u5217\u53f7\u3002<\/p>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c0\u4ee3\u8868\u8457\u7b2c\u4e00\u500b\u5a92\u9ad4\u7247\u6bb5\u7684\u5e8f\u865f\u70ba0\u3002\u5982\u679c\u7372\u53d6\u4e0b\u4e00\u500b\u64ad\u653e\u6e05\u55ae\uff0c\u901a\u5e38EXT-X-MEDIA-SEQUENCE\u6703\u8b8a\u62101\u3002<\/p>\n
#EXTINF: \uff1a\u8868\u793a\u5a92\u4f53\u7247\u6bb5\u7684\u6301\u7eed\u65f6\u95f4\u3002EXTINF\u6807\u7b7e\u7684\u4e0b\u4e00\u884c\u662f\u7247\u6bb5\uff0c\u5e76\u8868\u793a\u5176\u65f6\u95f4\u3002<\/p>\n
\u8fd9\u4e2a\u4f8b\u5b50\u8868\u793a\u4e86\u7247\u6bb5\u6587\u4ef6 stream_0.ts \u7684\u6301\u7eed\u65f6\u95f4\u4e3a2.266667\u79d2\u3002<\/p>\n
#EXT-X-TARGETDURATION: \u8be5\u64ad\u653e\u5217\u8868\u4e2d\u5a92\u4f53\u7247\u6bb5\u7684\u6700\u5927\u6301\u7eed\u65f6\u95f4\u3002<\/p>\n
\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\u53ea\u6709\u4e00\u4e2a\u5a92\u4f53\u5206\u6bb5\uff0c\u65f6\u957f\u4e3a3\u79d2\u3002<\/p>\n
\u8a73\u76e1\u7684\u5e8f\u5217<\/h1>\n
HLS\u7684\u5e8f\u5217\u56fe\u5982\u4e0b\u6240\u793a\u3002
\n\u5f53\u5ba2\u6237\u7aef\u83b7\u53d6\u5230\u670d\u52a1\u5668\u4e0a\u7684playlist.m3u8\u6587\u4ef6\u65f6\uff0c\u670d\u52a1\u5668\u5f00\u59cb\u751f\u6210\u5206\u6bb5\u6587\u4ef6\uff08\u5982stream_0.ts\uff09\u3002
\n\u5f53\u79ef\u7d2f\u4e86\u4e00\u5b9a\u6570\u91cf\u7684\u5206\u6bb5\u6587\u4ef6\uff08\u6b64\u4f8b\u4e2d\u4e3a3\u4e2a\uff09\u65f6\uff0c\u670d\u52a1\u5668\u4f1a\u8fd4\u56deplaylist.m3u8\u6587\u4ef6\u3002
\n\u83b7\u53d6\u5230playlist\u7684\u5ba2\u6237\u7aef\u6839\u636e\u5176\u5185\u5bb9\u83b7\u53d63\u4e2a\u5206\u6bb5\u6587\u4ef6\u3002
\n\u4e4b\u540e\u4f1a\u5faa\u73af\u8fdb\u884cplaylist\u7684\u83b7\u53d6\u548c\u5206\u6bb5\u6587\u4ef6\u7684\u83b7\u53d6\u3002<\/p>\n
\"undefined\"<\/div>\n
\u5728\u5b9e\u65bd\u8fc7\u7a0b\u4e2d\u63d0\u51fa\u7684\u7591\u95ee<\/h1>\n
\u7531\u4e8e\u5728\u5b9e\u65bd\u8fc7\u7a0b\u4e2d\u5bf9\u83b7\u53d6\u64ad\u653e\u5217\u8868\u7684\u65f6\u95f4\u6709\u4e9b\u72b9\u8c6b\uff0c\u6240\u4ee5\u6211\u4eec\u5c06\u8ba8\u8bba\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n
    \n
  • \n
      playlist\u306e\u53d6\u5f97\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3059\u3050<\/ul>\n<\/li>\n<\/ul>\n
      \u6700\u3082\u5358\u7d14\u3067\u3059.\u3057\u304b\u3057playlist\u306b\u5909\u66f4\u304c\u306a\u3044\u5834\u5408\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5e2f\u57df\u306e\u5727\u8feb\u3084\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u4e0a\u6607\u304c\u767a\u751f\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002RFC\u306b\u3082\u983b\u7e41\u306a\u30ea\u30ed\u30fc\u30c9\u306f\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3068\u3042\u308a\u307e\u3059.<\/p>\n
      playlist\u306b\u542b\u307e\u308c\u308b\u5168\u3066\u306e\u30bb\u30b0\u30e1\u30f3\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u5834\u5408<\/p>\n
      \u5168\u3066\u306e\u30bb\u30b0\u30e1\u30f3\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u3044\u308c\u3070\u4f59\u8a08\u306a\u8ca0\u8377\u306f\u767a\u751f\u3057\u307e\u305b\u3093.\u3057\u304b\u3057\u3053\u306e\u65b9\u6cd5\u3060\u3068playlist\u306e\u5883\u754c\u3067\u52d5\u753b\u304c\u6b20\u640d\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059.<\/p>\n
      playlist\u4e2d\u30bb\u30b0\u30e1\u30f3\u30c8\u6642\u9593\u306e\u5408\u8a08\u306e\u5c11\u3057\u524d<\/p>\n
      \u6700\u5f8c\u306b\u8003\u3048\u305f\u306e\u304c\u3001playlist\u306b\u542b\u307e\u308c\u308b\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u5408\u8a08\u6642\u9593\u306e\u5c11\u3057\u524d\u306b\u53d6\u5f97\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059.\u305d\u3046\u3059\u308c\u3070\u6b20\u640d\u306f\u306a\u304f\u306a\u308b\u3068\u8003\u3048\u307e\u3057\u305f.\u305f\u3060\u3053\u306e\u65b9\u6cd5\u3060\u3068,\u53d6\u5f97\u3057\u305fplaylist\u306b\u65e2\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u30bb\u30b0\u30e1\u30f3\u30c8\u304c\u542b\u307e\u308c\u308b\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u305d\u308c\u3092\u9664\u3044\u305f\u3082\u306e\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u5b9f\u88c5\u304c\u9762\u5012\u3067\u3059.<\/p>\n
      \u7ecf\u8fc7\u4ed4\u7ec6\u8003\u8651\u5e76\u67e5\u9605\u4e86RFC\uff0c\u6211\u786e\u8ba4\u5230\u8fd9\u4e00\u70b9\u90fd\u5df2\u7ecf\u5f97\u5230\u4e86\u6e05\u695a\u7684\u63cf\u8ff0\uff08\u4ece\u4e00\u5f00\u59cb\u5c31\u5e94\u8be5\u8fdb\u884c\u786e\u8ba4\uff09\u3002<\/p>\n
      \u5177\u4f53\u800c\u8a00\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 EXT-X-TARGETDURATION\u3002<\/p>\n
      \u521d\u59cb\u8bf7\u6c42\u5c06\u83b7\u53d6 EXT-X-TARGETDURATION \uff0c\u5f53\u64ad\u653e\u5217\u8868\u53d1\u751f\u66f4\u6539\u65f6\uff0c\u5c06\u95f4\u9694\u4e3a EXT-X-TARGETDURATION\/2 \u6765\u83b7\u53d6\u64ad\u653e\u5217\u8868\u3002EXT-X-TARGETDURATION \u662f\u64ad\u653e\u5217\u8868\u4e2d\u5305\u542b\u7684\u7247\u6bb5\u7684\u6700\u5927\u95f4\u9694\uff0c\u8fd9\u6837\u53ef\u4ee5\u964d\u4f4e\u8bf7\u6c42\u9891\u7387\u5e76\u5b9e\u73b0\u7b80\u5355\u7684\u5ba2\u6237\u7aef\u5b9e\u73b0\u3002<\/p>\n
      \u76ee\u6807\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
      \t\tnextDuration<\/span> :=<\/span> time<\/span>.<\/span>Second<\/span> *<\/span> time<\/span>.<\/span>Duration<\/span>(<\/span>newPlaylist<\/span>.<\/span>targetDuration<\/span>)<\/span>\r\n\t\tif<\/span> prevPlaylist<\/span> !=<\/span> nil<\/span> {<\/span>\r\n\t\t\tif<\/span> newPlaylist<\/span> ==<\/span> prevPlaylist<\/span> {<\/span>\r\n\t\t\t\t\/\/ If there is no change in the playlist, do not acquire the segment and wait only for targetDuration<\/span>\r\n\t\t\t\tto<\/span> =<\/span> *<\/span>time<\/span>.<\/span>NewTimer<\/span>(<\/span>nextDuration<\/span>)<\/span>\r\n\t\t\t\tcontinue<\/span>\r\n\t\t\t}<\/span> else<\/span> {<\/span>\r\n\t\t\t\t\/\/ If there is a change in the playlist, acquire the segment and wait for targetDuration\/2<\/span>\r\n\t\t\t\tnextDuration<\/span> \/=<\/span> 2<\/span>\r\n\t\t\t}<\/span>\r\n\t\t}<\/span>\r\n<\/code><\/pre>\n
      RFC\u592a\u68d2\u4e86\u3002\u6211\u4eec\u8981\u8ba4\u771f\u9605\u8bfb\u3002<\/p>\n
      \u6700\u7d42\u7684***
      \n\u6700\u7ec8***<\/h1>\n
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