[FFmpeg-user] ProRes XQ 12-bit support
Paul B Mahol
onemda at gmail.com
Wed Apr 25 00:12:09 EEST 2018
On 4/24/18, Elliott Balsley <elliottbalsley at gmail.com> wrote:
>>> Can it be possible for ffmpeg to misinterpret the image as 10-bit instead
>>> 12, and still make the image look correct?
> I think this actually could be possible. If you ignore the two least
> significant bits, then the image would still look correct, just lacking
> Looking at the source code here, I see that PRORES_BITS_PER_SAMPLE is
> defined as 10. So it sounds like ffmpeg simply decodes all ProRes as
> 10-bit. I would like to request the option to decode ProRes with 12-bit
> precision, but unfortunately I do not have any programming knowledge to
> Sample footage is here if anybody is interested:
There is no 12 bit codec.
There is only possible 16 bit alpha, which is downconverted to 10 bit.
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