Compiling AAC decoder with only AAC-LC

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Compiling AAC decoder with only AAC-LC

Igor Bukanov
Hello,

is it possible to compile ffmpeg to include only support for AAC-LC
profile support from the whole AAC decoder?

Regards, Igor
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Re: Compiling AAC decoder with only AAC-LC

Tom Worster
On 11/17/2020 8:43:40 AM, "Igor Bukanov" <[hidden email]> wrote:

>is it possible to compile ffmpeg to include only support for AAC-LC profile support from the whole AAC decoder?
i really don't know, although it doesn't seem likely.

but i'm curious why you want to do that. is there a negative consequence
to having decoder capability that you don't need?

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Re: Compiling AAC decoder with only AAC-LC

Igor Bukanov
On 2020-11-17 17:34, Tom Worster wrote:
> but i'm curious why you want to do that. is there a negative
> consequence to having decoder capability that you don't need?

AAC-LC is patent free at this point in US. AAC-Main in theory could be a
patent free in December 2020 as the corresponding standard was published
in December 1999, but there could be patent extensions or whatever.
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Re: Compiling AAC decoder with only AAC-LC

andrei ka
even if there's no config options, one can aways edit sbr routines in some
way in (fdk)aac sources to castrate support of HE profile...
&rei
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Re: Compiling AAC decoder with only AAC-LC

Carl Eugen Hoyos-2
In reply to this post by Igor Bukanov
Am Di., 17. Nov. 2020 um 14:43 Uhr schrieb Igor Bukanov <[hidden email]>:

> is it possible to compile ffmpeg to include only support for
> AAC-LC profile support from the whole AAC decoder?

Please understand that there is no guarantee whatsoever that
FFmpeg binaries compiled with --disable-all do not violate any
software patents or will not violate any software patents in the
future.
(Note that the people who claim they do not for a very long time
unintentionally distributed FFmpeg with all definitely patented
codecs enabled - so I wouldn't trust them too much.)

Carl Eugen
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