
PASS Check if browser supports enough test media types
PASS Test audio-only changeType for audio/mp4; codecs="mp4a.40.2" <-> audio/mp4; codecs="mp4a.40.2" 
PASS Test audio-only changeType for audio/mp4; codecs="mp4a.40.2" <-> audio/mpeg 
PASS Test audio-only changeType for audio/mpeg <-> audio/mp4; codecs="mp4a.40.2" 
PASS Test audio-only changeType for audio/mpeg <-> audio/mpeg 
PASS Test video-only changeType for video/mp4; codecs="avc1.4D4001" <-> video/mp4; codecs="avc1.4D4001"