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Last active March 30, 2017 19:23
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short_audio_firefox.md

Playing short audio file on Firefox

The following problems seems to raise only on Firefox. (Chrome and Edge can play short audio file well)

This problems and solutions are confirmed on Firefox 52.0.2 (32-bit) on Windows 10 (x64)

Go to mute state

When audio file is too short (eg. 10ms), Firefox seems to go to mute state, and cannot listen it.

To solve this problem, play silence audio loop (>= 1sec) in background.

Audio quality

When playing short audio, its quality may be aweful. Should append silence(>= 5ms) after audio file.

Decoding Errors

Firefox may be failed to decode MP3 file if it is too short (< 50ms).

Media resource ***** could not be decoded.

To solve this problem:

  • Append silence until total length become 30ms - 50ms at least.
  • Use CBR instead of VBR (eg. Should not use lame -v)
  • Convert to WAV file
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