[FFmpeg-devel] Prores 4444 (alpha) support
max_pole at gmx.de
Tue Oct 23 12:53:28 CEST 2012
Am 23.10.2012 10:38, schrieb Al Crate:
> Yeah that'd be handy, though getting the color model added to avutil
> would need to happen first, though just to confuse matters i think
> 4444 can use RGB as well as YUV
If you could send us a patch it'd be very appreciated!
Hint: please don't top-post on this ML...
> On 22/10/12 18:36, Maxim wrote:
>> Am 22.10.2012 18:20, schrieb Edward Richards:
>>> I don't think anyone knows what the alpha compression scheme is.
>> The compression scheme for ProRes' alpha is basically the same as for
>> the other three components, i.e. run-length coding + variable-length
>> codewords. I'm currently preparing a description on how it works, so
>> someone else could reimplement it...
>>> Also it is a patent violation in the US and possibly other places so
>>> use accordingly.
>> Fortunately, software patents are void in Europe:-)
>> Best regards
>> Maxim Poliakovski
>> ffmpeg-devel mailing list
>> ffmpeg-devel at ffmpeg.org
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> ffmpeg-devel at ffmpeg.org
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