Send From File

Send video and audio from files to a browser.

While in examples/send_from_file directory

1. Generate media files

ffmpeg -f lavfi -i testsrc=duration=5:size=640x480:rate=30 -g 60 video.ivf
ffmpeg -f lavfi -i sine=frequency=420:duration=5 -c:a libopus audio.ogg

Note

Option -g defines a GOP size i.e. how frequently we will generate a new keyframe. Our framerate is 30, so we set the GOP to 60 to have a new keyframe every two seconds. This is to make sure, that even if something goes really badly and your keyframe is dropped (e.g. there is a bug in a web browser, or something strange happend on your network interface), a browser, in the worst case scenario, will get a new one in two seconds.

You may use your own files, if they meet the requirements:

• for video, it must be IVF in 30 FPS,
• for audio, it must be Ogg with a single Opus stream.

2. Run mix deps.get
3. Run mix run --no-halt
4. Visit http://127.0.0.1:8829/index.html in your browser and press the play button.

The IP and port of the app can be configured in config/config.exs.

The video and audio will loop infinitely.