xiph / xiph/flac

BW64 support (to obsolete RF64)

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Dominant language
C
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Description

The EBU won't anymore maintain the RF64 format: https://tech.ebu.ch/publications/tech3306
It has found its way into some broadcaster's publications (got that from a hydrogenaud.io contributor), and it isn't farfetched that the format will gain some traction among those who go for "object-based" audio. Which might not be FLAC's top priority, but:
To the extent they succeed at obsoleting RF64 altogether, then expect even stereo content to appear with the BW64 fourcc.

More: https://github.com/ebu/libbw64 ; WavPack supports it in the fresh 5.7.0 release ; Monkey's Audio since last December.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the EBU BW64 material linked in the issue and comparing libbw64 with FLAC's existing RF64-related handling. The issue does not name source files, tests, or an implementation entry point. Done would mean defined BW64 support that addresses the format's relationship to RF64 and is covered by appropriate tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
audio-video-rtc
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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