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).

Demo

• https://googlechrome.github.io/samples/media/flac-in-mp4-for-mse.html

Documentation

• https://www.w3.org/TR/mse-byte-stream-format-isobmff/
• https://github.com/xiph/flac/issues/38
• https://github.com/w3c/media-source/issues/188

Specification

Specification link

Status: Specification being incubated in a Community Group

Status in Chromium

Blink components: Blink>Media

Implementation status: Enabled by default (tracking bug)

Consensus & Standardization

• Firefox: Shipped/Shipping
• Safari: No signal
• Web Developers: Positive

Owner

• wolenetz@chromium.org

Comments

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).

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Last updated on 2021-05-05