Firefox won't play .WAV files using the HTML5 <audio> tag?

Question

I\'m building a page that will allow a user to upload an MP3 file. That MP3 file is converted in the back end to a .WAV file using LAME.

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Answer 1

What's the bit depth on your WAV files? Firefox supports 8-bit and 16-bit PCM, but not other bit depths (12, 20, 24, 32).

Answer 2

Firefox expects one of the following codecs to be returned as the MIME type:

• audio/wave (preferred)
• audio/wav
• audio/x-wav
• audio/x-pn-wav

Make sure your server returns one of those MIME types for wav files.

Answer 3

This is bug in Firefox - you need to list the MP3 format source to the end, and it will work.

Answer 4

In addition to the bit depth issue, Firefox HTML5 audio apparently does not play back 6-channel audio, either. For my app, I needed to re-rip to change both bit depth and number of channels (e.g. sox inFile -b 16 -c 2 outFile otherParams).