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Nginx-rtmp-moduleでのMPEG-DASH配信
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第1回 html5j TV部 勉強会でLT枠にて利用した資料です。
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Nginx-rtmp-moduleでのMPEG-DASH配信
1.
2.
背景 第1回 html5j TV部
勉強会 – 出遅れました。。。(埋まるの速すぎ) • LT枠追加! – ネタ探さねば – 畠山さんの記事に触発 • HTML5 へのストリーミング! MPEG-DASHでのスト リーミングを行う (DRMなし版)
3.
自己紹介 名前: 菊本 隆博
Twitter: @takakiku 所属: 株式会社Gnzo(グンゾウ) http://gnzo.com/ 仕事: インフラエンジニア 多分
4.
Nginx-rtmp-module Nginx(Webサーバ)の拡張モジュール https://github.com/arut/nginx-rtmp-module ○ RTMP/HLS/MPEG-DASH
live streaming ○ RTMP Video on demand FLV/MP4 ビルド Nginx のビルド時にモジュールを指定する $ ./configure --add-module=/path/to/nginx-rtmp-module $ make $ sudo make install
5.
ちなみに、 HLSでのVoDは ngx_http_hls_module Nginx
の有償版のみでのサポート Wowza Media Server では 3.6 からMPEGDASH がサポートされるようになっています。 http://www.wowza.com/forums/content.php?508
6.
デモ Galax Nexus(SC-04D)+ ArutCam
Mac上のVMに、Nginx環境 クライアントは dash.js
7.
設定 /etc/nginx/nginx.conf rtmp { server { listen
1935; application dash { live on; dash on; dash_path /tmp/dash; } } }
8.
設定続き http { server { listen
8080; location /dash { root /tmp; add_header Cache-Control no-cache; add_header Access-Control-Allow-Origin *; } } 注:Access-Control-Allow-Originはdash.jsを埋込んでいるサイトとOriginが 異なる場合に必要。 また、Productionでは許可するOriginをちゃんと書くこと。
9.
しかし、、、 この設定で動いたのは Galaxy S4
+ ArutCam NEXUS5 + ArutCam LiveShell.pro 以下では動かず Galaxy Nexus + ArutCam Flash Media Live Encoder
10.
設定その2(とりあえず回避 策) サーバー側で再エンコードする処理追加 rtmpセクションにapplication追加 application mysrc
{ live on; exec_push /usr/local/bin/ffmpeg -re -i rtmp://localhost/mysrc/${name} -vcodec libx264 -vprofile baseline -acodec libfaac -ar 44100 -ac 1 -f flv rtmp://localhost/dash/${name}; }
11.
最後に Nginx-rtmp-module使うとカジュアルに rtmp / hls
/ mpeg-dash の配信環境が作れます。 MPEG-DASH部分は、まだデバイス・環境によ り動作がまちまちといった感触。今後に期待! ご清聴ありがとうございました!
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