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ProRes - Color Tag Mismatch
#1
Bug 
When tagging the encoder with manually set VUI values (such as color_primaries=smpte170m:color_trc=bt709:colorspace=smpte170m) in the ProRes codec tab, the log states that ffmpeg is respecting those values for the bitstream filter with the parameter: (-bsf:v prores_metadata=color_primaries=smpte170m:color_trc=bt709:colorspace=smpte170m) .

However, ffmpeg is also incorporating native tagging flags such as -color_primaries bt470m -color_trc bt709 -colorspace bt470bg presumably from Vapoursynth (just a guess on looking at the log.)

Therefore, the output file is shown from mediainfo and ffprobe as 

Color primaries                        : BT.470 System M
colour_primaries_Original         : BT.601 NTSC
Transfer characteristics             : BT.709
Matrix coefficients                    : BT.470 System B/G
matrix_coefficients_Original      : BT.601

(bt470bg/bt470m/bt709, progressive)

The input file used in the log is read from ffprobe and mediainfo as:  smpte170m/smpte170m/bt709 but seems to be mis-adjusted around line 2629 as bt470bg.



The desired output from ffprobe would be: (smpte170m/smpte170m/bt709, progressive)

The desired output is achieved when using the x264 codec VUI options, but not for ProRes (including 'standard' and 'kostya'). 

This has been tested on the latest dev versions for a while now (as in several months of dev builds); I just haven't taken the time to post and mention it.

Thanks for your hard work on this incredible gui! 


.zip   HybridDebugOutput.zip (Size: 112,73 KB / Downloads: 57)
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Messages In This Thread
ProRes - Color Tag Mismatch - by Nate463 - 04.12.2025, 19:15
RE: ProRes - Color Tag Mismatch - by Selur - 04.12.2025, 20:39
RE: ProRes - Color Tag Mismatch - by Selur - 05.12.2025, 17:20
RE: ProRes - Color Tag Mismatch - by Nate463 - 05.12.2025, 19:14
RE: ProRes - Color Tag Mismatch - by Selur - 05.12.2025, 19:28
RE: ProRes - Color Tag Mismatch - by Nate463 - 05.12.2025, 19:45
RE: ProRes - Color Tag Mismatch - by Selur - 05.12.2025, 19:59
RE: ProRes - Color Tag Mismatch - by Selur - 05.12.2025, 20:16
RE: ProRes - Color Tag Mismatch - by Nate463 - 05.12.2025, 21:52
RE: ProRes - Color Tag Mismatch - by Selur - 05.12.2025, 22:12

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