[FFmpeg-user] FFMPEG introduces color shift to DNxHD MOVs
mike.scheutzow at alcatel-lucent.com
Fri Jul 6 19:21:12 CEST 2012
Nathan Rusch wrote:
> Hello all,
> In trying to troubleshoot another issue, I’ve run across a subtle,
> consistent color shift being introduced by FFMPEG to DNxHD-encoded
> MOVs. Thus, they fail to match both DNxHD MOVs generated with the
> Avid codec, as well as both MOVs’ common source material (an 8-bit
> RGB TIFF sequence).
ffmpeg always assumes the BT.601 colorspace when converting from
RGB->YUV and from YUV->RGB. A patch to fix this is welcome, but no one
has ever cared enough to provide it.
So if you do:
ffmpeg: RGB -> [BT.601 matrix] -> YUV
other tool: YUV -> [BT.709 matrix] -> RGB
then you get a color shift like you describe.
Workaround: feed ffmpeg with a file containing YUV that's been properly
More information about the ffmpeg-user