edx-val (Video Abstraction Layer)

edx-val is a django app that creates and retrieves metadata for videos and subtitles. When creating video entries, they can be assigned to preset profiles such as 'high_quality' or 'mobile_only'. When requesting a video, the client does not need to know which profile to retrieve, but only the edx_video_id of that video. Since all the different profiles for that particular video is returned, the client can decide which profiles they want to use.

Example: Retrieve all profiles for a video with `edx_video_id`="example"

>>> get_video_info("example")
{
    'url' : '/edxval/videos/example',
    'edx_video_id': u'example',
    'duration': 111.0,
    'client_video_id': u'The example video',
    'encoded_videos': [
        {
            'url': u'http://www.example.com/example_mobile_video.mp4',
            'file_size': 25556,
            'bitrate': 9600,
            'profile': u'mobile'
        },
        {
            'url': u'http://www.example.com/example_desktop_video.mp4',
            'file_size': 43096734,
            'bitrate': 64000,
            'profile': u'desktop'
        }
    ]
}

Developing

First, create a virtual environment:

virtualenv venvs/val
source venvs/val/bin/activate

To run tests:

make test