We currently allow for videos being downloaded in mp4 like so : During video processing please use output video format = mp4 and the playback url will be mp4 OR please enable generate mp4 url when choosing hls and get download_url from the json response via api or asset details page.
Update : The generated MP4 url for the HLS output is now readily available on asset details page. (Please watch at 2:05)
Note:
This video does not have an audio.