I have the same issue (RTX 3090), tried 3.0.19, 3.0.20 and nightly and they all had the same issue, but only with some videos. I was trying to play an 853x480 video. I rescaled it with ffmpeg: ffmpeg -i in.mp4 -vf "scale=-1:-1" -aspect 16:9 out.mp4 Which produced a video that was 854x480 (...