[FFmpeg-trac] #8424(undetermined:new): Colour changes if scale height
FFmpeg
trac at avcodec.org
Thu Dec 12 17:45:31 EET 2019
#8424: Colour changes if scale height
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Reporter: Bassquake | Owner:
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by pdr0):
This actual has nothing to do with ffmpeg ;
It's the software you are using for playback, and how it converts to RGB
for display. Some players use the criteria of "height" to determine if
something is "HD" and use Rec709. So they use Rec709 when height >576 ,
Rec601 when height <=576. Essentially it's the "HD" vs. "SD" cutoff. But
the handling can be different in other software, video editors. There are
other factors, such as the format used, metadata flags which may affect
how it's handled. For example, huffyuv will often get 601 treatment in
some editors, even when 720 or 1080 height.
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Ticket URL: <https://trac.ffmpeg.org/ticket/8424#comment:7>
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