Thank you for the tips, I'll work on it. 2015-04-22 3:06 GMT-03:00 nand <n...@nand.wakku.to>:
> > I intended to fetch the correct gamma value from the video/image metada > > or pass it by flag (like gamma=x) but yet I don't know how to get the > > correct gamma based on the input, thus for now it is hardcode. > > This is how we do it in mpv: > > 1. If the source has enum AVColorTransferCharacteristic set, use that. > 2. Otherwise, apply this heuristic: > If YCbCr, assume BT.1886 > If RGB, assume sRGB > > Also, you should note that scaling in linear light is only desirable for > downscaling. For upscaling it tends to produce rather ugly ringing > artifacts. > > So I would advise adding a check to see if (newRes < oldRes) before > applying the gamma transformation. > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
