tpad is always/only green

[Alex]

tpad color is green, both default and when color=black
How to reproduce:

ffmpeg.exe -i Test.mkv -c:v libx265 -pix_fmt yuv420p10le -crf 25 -preset ultrafast -filter_complex "[0:v]trim=end=1000ms,tpad=stop_duration=1000ms:color=black" Green-HEVC.mp4
ffmpeg version 2023-10-09-git-37b5f4a1f6-full_build-www.gyan.dev

windows 10.

tried encoding via AV1 & HEVC to mkv & mp4 and all tpad color is green.

Issue also discussed on superuser a few months ago, Gyan commented
"The regression happened on May 22, likely commit 86b252ea9d – Gyan Jun 18 at 4:12"
​https://superuser.com/questions/1789626/when-using-ffmpeg-tpad-padding-frames-are-green

but I couldn't find a corresponding ticket here.

[Alex]

green tpad on encode

[Alex]

discovered tpad's

stop=[frames]

still produces black correctly, so the green problem seems to be only

stop_duration

(start_duration is also okay).

FWIW, would still be helpful if stop_duration were fixed when possible.

Thanks,
Alex

[ePirat]

Sorry, this is a regression from 86b252ea9dee18006910e30646ad1067f2d1323f

I've submitted a patch to fix it: ​http://ffmpeg.org/pipermail/ffmpeg-devel/2023-November/316718.html

[ePirat]

You can work around the issue by specifying the start and/or stop option (depending which you need) with a dummy value like 1, while still specifying the start_duration and/or stop_duration, which will take precedence.

[Alex]

awesome, thanks.

[Marton Balint]

Fixed in 6667741029bce9a79b48caedf24d6cb69c5ead7d.