VideoWriter generating unexpected results

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Touraj Tajbakhsh
Touraj Tajbakhsh 2023-12-11
评论： Pierre 2025-9-30
I believe the VideoWriter in R2023b has a bug. It can be reproduced with this piece of code:
v = VideoWriter('test.mp4', 'MPEG-4'); % use h264 encoding
v.FrameRate = 30;
v.Quality = 100;
open(v)
vidFrame = ones([1920, 1080, 3]);
writeVideo(v, vidFrame);
close(v)
There are black lines appearing in the output video:
I am on MacOS Sonoma 14.1.2 (M2 Ultra).
  11 个评论
显示 9更早的评论
Shaozhen
Shaozhen 2025-4-29
Same here. Apple Silicon M4, running 2024a
I tried different resolutions too, but none of them work. The only work-around I have is to use Uncompressed AVI.
Pierre
Pierre 2025-9-30
Same bug on 2025a. It seems incredibly difficult to fix.

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