All MIME types supported by MediaRecorder in Firefox and Chrome?

Question

Where can I find a list of all MIME types that are supported by Firefox or Chrome? All examples I\'ve seen so far using video/webm onl

Answer 1

For Firefox, the accepted mimetypes can be found in MediaRecorder.cpp and confirmed using MediaRecorder.isTypeSupported(...)

Example:

21:31:27.189 MediaRecorder.isTypeSupported('video/webm;codecs=vp8')
21:31:27.135 true
21:31:41.598 MediaRecorder.isTypeSupported('video/webm;codecs=vp8.0')
21:31:41.544 true
21:32:10.477 MediaRecorder.isTypeSupported('video/webm;codecs=vp9')
21:32:10.431 false
21:31:50.534 MediaRecorder.isTypeSupported('audio/ogg;codecs=opus')
21:31:50.479 true
21:31:59.198 MediaRecorder.isTypeSupported('audio/webm')
21:31:59.143 false