HLS WebM test with codec

The video will try to load an HLS containing VP9-in-MP4 and fallback variants, with MP3 audio:

And with MP3 audio and only H.264 (marked as mp4a.6b):

And with MP3-in-MP4 audio (marked as mp3):

And with MP3-in-MP4 audio (marked as mp4a.6b):

And with MP3-in-TS audio: