Mikael Finstad

Hmm, you merged one file of Cfr 30 with another file of cfr 60 with losslesscut and the output plays correctly? (The first portion of the merged output file plays...

does this apply to all video file types you try? you're just seeing the first frame and nothing else?

Ok, strange. I'm not seeing this problem on MacOS

is the problem related to ffmpeg-assisted playback or natively supported files? edit: ah I see that it does convert to supported format. is it possible to share a file that...

Thanks. For me (macOS) I'm **not** getting any message that the format is not supported, however I can observe the seeking issue, need to investigate further.

I can reproduce with certain videos. It seems to have broken in Electron v33.0.0 and later (works as of v32.3.3). See also super issue #2392

here's how to reproduce: - https://www.mediafire.com/file/ypgq3vzz3s25d7q/2025-03-28_22-16-27.mkv/file - seek to 54.167 - step forward frame by frame OR drag the timeline around the region where the mouse moves - observe that...

Seems to work in 3.66.1 for me now.

sounds like a bug in ffmpeg if it exits with code 3199971767. not much I can do in losslesscut.

@rrrcabral do you also have exits code 3199971767 in the error message?