4.1 regression: Artifacts in video output caused by threaded YUV conversion #120077
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Aras Pranckevicius
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Reference: blender/blender#120077
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System Information
Operating system: Arch Linux
Graphics card: AMD RX480
Blender Version
Broken: 4.1
Worked: 4.0.2
Caused by
422dd9404fShort description of error
Rendering of a mp4 produces artifacts to the very left of the video produced. See attached image with the artifacts ringed in white. They appear as grey lines.
Using View Animation after rendering shows that there is some glitching going on throughout the very left of the viewport.
Exact steps for others to reproduce the error
Open attached .blend file and render animation.
Can you attach simple example file?
Please find attached a stripped down version of the blend file I was using. It demonstrates the issue once the animation is rendered with the settings as set.
Some more information:
[imbjr@pc ~]$ pacman -Qi ffmpeg
Name : ffmpeg
Version : 2:6.1.1-7
Build Date : Mon 18 Mar 2024 15:48:35 GMT
Install Date : Fri 22 Mar 2024 07:07:54 GMT
[imbjr@pc ~]$ pacman -Qi blender
Name : blender
Version : 17:4.1.0-1
Build Date : Tue 26 Mar 2024 16:08:37 GMT
Install Date : Thu 28 Mar 2024 17:23:12 GMT
I've re-rendered an animation I made 5 days ago and it now shows the artifacts as well.
Seems to work fine for me. Whether I'm viewing it through "View Animation" or any player.
Could it be a problem in Linux?
@lichtwerk, can you check on Linux?
@IMBJR-3 It seems like you installed Blender through your package manager. If this is the case, can you try downloading and testing the official Blender foundation version from: https://www.blender.org/download
Sometimes there are bugs specific to versions compiled by other people.
Note for others. I just tested Linux, and I couldn't reproduce the issue here.
I've downloaded the official Linux version and the render artifacts are there too. See attached.
I can reproduce this with all players pretty much. Will check older versions and bisect.
Rendering artifacts in video outputto Regression: Artifacts in video outputCC @aras_p. Just a note, that I will be unavailable for next 2 weeks, so won't be able to review fix
Regression: Artifacts in video outputto 4.1 regression: Artifacts in video output caused by threaded YUV conversion