[FFmpeg-devel] Alternate audio bit depth support

Vitor Sessak vitor1001
Mon Jun 22 21:40:44 CEST 2009

Benjamin Larsson wrote:
> Brian Crowell wrote:
>> Hello. Just recently became a libavcodec/libavformat user. I see
>> there's been discussions about adding support for audio bit depths
>> other than 16 in the API, and from what I read in the code, that
>> hasn't happened yet.
>>   http://wiki.multimedia.cx/index.php?title=Ffmpeg_audio_api
>> First: Has anyone been working on this?
>> Second: If nobody's working on it, I'd be willing to put some time
>> into it. I like the proposal of making it like the video API: the
>> codec just exposes a "native" format, where native is the format of
>> the codec's internal buffer. (Example: AC3 uses float internally.)
>> Comments? Suggestions? Links to previous discussions or partial implementations?
>> --Brian
> There is support for other formats. We just haven't converted all the
> codecs to use it yet. RA228 being one of them.
> http://git.ffmpeg.org/?p=ffmpeg;a=blob;f=libavcodec/ra288.c;h=abc7df51bd65f7c620c910b74141ab3adc8a0ff9;hb=HEAD
> Patches to convert more of them would be welcome.

BTW, it is not very hard to do the conversion. For ra288, it was a 
matter of changing four lines: 


More information about the ffmpeg-devel mailing list