On 4/24/18, Elliott Balsley <elliottbals...@gmail.com> wrote: >>> Can it be possible for ffmpeg to misinterpret the image as 10-bit instead >>> of >>> 12, and still make the image look correct? >> >> No. > > > I think this actually could be possible. If you ignore the two least > significant bits, then the image would still look correct, just lacking > precision. > > 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 > contribute. > > https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/proresdsp.h > <https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/proresdsp.h> > > Sample footage is here if anybody is interested: > http://www.arri.com/camera/alexa/learn/alexa_sample_footage/
There is no 12 bit codec. There is only possible 16 bit alpha, which is downconverted to 10 bit. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
