def get_twitch_gif(user):
    videos = get_json('https://api.twitch.tv/kraken/channels/{}/videos?limit=1&broadcasts=true&hls=true'.format(user))
    vidid = video['videos'][0]['_id']
    if vidid is None: return None

    vid = get_json('https://api.twitch.tv/kraken/videos/{}'.format(vidid))
    if 'v1/AUTH_system' not in vid['preview']: return None

    index = '/'.join(vid['preview'].split('/')[3:7])
    url = 'http://vod.ak.hls.ttvnw.net/{}/chunked/index-dvr.m3u8'.format(index)
    # the .m3u8 file contains enough information to work with here...