2

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.

Martin Gordon
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1 Answers1

1

Mac support for H.264 hasn't landed yet as of November 2013. The bug is 851290.

hsivonen
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