According to this page, Firefox 22+ on the Mac support MPEG 4, H.264, MP3 and AAC.
Still, I have been unable to play both MP3 audio files and H.264 video files using the audio and video tags in Firefox 22 and 23, getting the ol' "HTTP 'Content-Type' of 'xyz' is not supported" error.
I have tried the following content types to no avail:
- audio/mpeg
- audio/mp3
- audio/mpeg-3
- audio/x-mpeg-3
- video/mp4
Please note: There are similar questions here, but none of them have been asked since Firefox 22 was released on June 24.
