Re: [FFmpeg-devel] [PATCH 1/2] avcodec/liblc3: Add encoding/decoding support of LC3 audio codec - Antoine Soulier via ffmpeg-devel

From: Antoine Soulier via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Cc: Antoine Soulier <asoulier@google.com>
Subject: Re: [FFmpeg-devel] [PATCH 1/2] avcodec/liblc3: Add encoding/decoding support of LC3 audio codec
Date: Fri, 29 Mar 2024 11:41:58 -0700
Message-ID: <CA+wrVda85xp+LoHKmhTTuErPKEqxkhw-D_jzRMrVDkyxgDGTqw@mail.gmail.com> (raw)
In-Reply-To: <GV1P250MB07376C7C3CB42AFFF17E98678F3A2@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM>

With free licensed code, I don't think that will happen; the core algorithm
is the same.
LC3 is like a subset of LC3plus, but also adds 7.5ms frame duration.
I acknowledged the use of only one Codec Id, because it makes sense to me
to distinguish both as different profiles / feature sets.
Moreover, LC3 and LC3plus declares both the 10ms frame duration. It's
impossible to distinguish such a stream as LC3 or LC3plus.
The main difference between the 2 codecs are licenses:
- LC3 will only be used, and is free to use, over Bluetooth on standard
profile claiming it.
- LC3plus can be used anywhere, but is under license fee.

So it makes sense to me to cover both as LC3.
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