> -----Original Message----- > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of Carl > Eugen Hoyos > Sent: Saturday, June 20, 2020 12:59 AM > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> > Subject: Re: [FFmpeg-devel] [PATCH v1 1/9] lavu/pix_fmt: add P012 pixel > format > > Am Fr., 19. Juni 2020 um 10:27 Uhr schrieb Wang, Fei W > <fei.w.w...@intel.com>: > > > > > > > > > -----Original Message----- > > > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of > > > Hendrik Leppkes > > > Sent: Friday, June 19, 2020 3:21 PM > > > To: FFmpeg development discussions and patches > > > <ffmpeg-devel@ffmpeg.org> > > > Subject: Re: [FFmpeg-devel] [PATCH v1 1/9] lavu/pix_fmt: add P012 > > > pixel format > > > > > > On Fri, Jun 19, 2020 at 3:53 AM Fei Wang <fei.w.w...@intel.com> wrote: > > > > > > > > P012 is 12bit planner format which is similar to NV12. It using > > > > two bytes to store 12bit valid data and 4bit zero in LSB. This > > > > format will be used for hardware decode/encode in VAAPI and QSV. > > > > > > > > > > P012 is not required, you can just use P016. All these P* formats > > > have the advantage of being aligned to MSB, which means the bitdepth > > > does not matter for their layout. > > > Instead you can use P016 and if you must know, look at a bitdepth > > > value separately. > > If using P016 instead of P012 for 12bit clips, that means for 16bit > > clips we also need to use P016, which will bring the conflict with current > VAAPI logic. > > Then fix the logic, it is easy to detect how many significant bits the data > contains. Yes, it is not hard to refine the logic, and before the action I'd like to listen From Mark Thompson, the maintainer of VAAPI to reach an agreement.
Kindly Ping @Mark Thompson > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org > with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
