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v3_CN_Snapshot

winlin edited this page Oct 20, 2015 · 26 revisions

Snapshot

截图有以下几种方式可以实现:

  1. HttpCallback:使用HTTP回调,收到on_publish事件后开启ffmpeg进程截图,收到on_unpublish事件后停止ffmpeg进程。SRS提供了实例,具体参考下面的内容。
  2. Transcoder:转码可以配置为截图,SRS提供了实例,具体参考下面的内容。

HttpCallback

下面的实例使用Http回调截图。

先启动实例Api服务器:

python research/api-server/server.py 8085

SRS的配置如下:

# snapshot.conf
listen              1935;
max_connections     1000;
daemon              off;
srs_log_tank        console;
http_server {
    enabled         on;
    listen          8080;
}
vhost __defaultVhost__ {
    http_hooks {
        enabled on;
        on_publish http://127.0.0.1:8085/api/v1/snapshots;
    }
    ingest {
        enabled on;
        input {
            type file;
            url ./doc/source.200kbps.768x320.flv;
        }
        ffmpeg ./objs/ffmpeg/bin/ffmpeg;
        engine {
            enabled off;
            output rtmp://127.0.0.1:[port]/live?vhost=[vhost]/livestream;
        }
    }
}

启动SRS时,ingest将会推流,SRS会调用Api服务器的接口,开始截图:

./objs/srs -c snapshot.conf

截图生成的目录:

winlin:srs winlin$ ls -lh research/api-server/static-dir/*.png

可以通过HTTP访问,譬如:http://localhost:8085/*.png

Winlin 2015.10

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