live_thumb

Live thumbnail using MJPEG_ and nginx\_push\_stream_.

Usage

Compile Nginx with nginx\_push\_stream_ support. The example config also uses lua-nginx-module and lua-resty-redis to store and serve old snapshots from Redis, but this module is optional. The Nginx configuration should be something like this:

::

$ LUAJIT_LIB=/usr/local/lib/ LUAJIT_INC=/usr/local/include/luajit-2.0 ./configure --add-module=../nginx-push-stream-module --add-module=../lua-nginx-module --with-pcre --with-ipv6 --with-ld-opt=-L/usr/local/lib

Now run Nginx with sample config:

::

$ nginx -c $PWD/nginx.conf

Make a directory to store the thumbs

::

$ mkdir -p frames/parts

Start ffmpeg to create thumbs for a channel (parts in this example):

::

$ ffmpeg -re -i rtmp://example.com/live/stream -vf "scale=159:-1" -r 3 frames/parts/thumb%9d.jpg

Run the broadcaster:

::

$ python broadcaster.py

If you prefer, install the script using pip and run it:

::

$ pip install live_thumb
$ broadcaster

Watch the movie with the example html:

::

$ open test.html

Or go to http://localhost:9080/sub/parts directly.

To also store the snapshots on redis, you should run the broadcaster with an extra env variable:

::

$ REDIS_HOST="localhost" REDIS_PORT=7000 python broadcaster.py

The snapshots will be served from http://localhost:9080/snapshot/parts. You can also specify a timestamp: http://localhost:9080/snapshot/parts?timestamp=1396381230

.. _MJPEG: http://en.wikipedia.org/wiki/Motion_JPEG .. _nginx_push_stream: https://github.com/wandenberg/nginx-push-stream-module