#6140: Add support for AMR-WB+ codec
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Reporter: boris | Owner: (none)
Type: enhancement | Status: new
Priority: wish | Component: avcodec
Version: git-master | Resolution:
Keywords: amrp | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by LanMarc77):
I am the maintainer of https://github.com/lanmarc77/playaway and would
also like to see AMR-WB+ implemented in ffmpeg.
The Playaways I am using can now only be rewritten with the already
mentioned windows based encoder.exe which is 32bit.
My findings so far:
There is a 3gp and raw encapsulation format for AMR-WB+. The Playaways use
the raw format.
The raw format file structure is explained in 3GPP TS 26.290 V17.0.0
(2022-04) (.zip attached) at chapter 8 starting on page 78. The 3gp format
is already known I guess.
The audio encoding is explained in the chapters before.
The example encoder and decoder which run fine with wine are explained in
3GPP TS 26.304 V17.0.0 (2022-04) (.zip attached).
I would be able and willing to test files created with ffmpeg using my
Playaway hardware.
Attached as samples.zip you can also find encodings with different
bitrates and formats which were created using encoder.exe.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6140#comment:3>
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