Support FLAC in ISO-BMFF with MSE

FLAC is a lossless audio coding format, already supported in regular Chrome HTML5 playback. This feature adds support for FLAC in ISO-BMFF to Chrome HTML5 Media Source Extensions (MSE).


Chrome has had regular src= playback of FLAC since M56 (ChromeOS had it prior to that). Chrome M57 included src= support for FLAC in MP4, using FFmpeg's implementation of the isoflac spec draft to demux. Firefox implemented support for both MSE and regular src= playback of FLAC in MP4 in version 51 (~January 2017).




Editor's draft

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 62
  • Chrome for Android release 62
  • Android WebView release 62

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • Shipped
  • No public signals
  • No public signals
  • Positive


Last updated on 2017-09-13