Peter

The source is not VFR. And I have this issue with different sources... ``` Frame rate mode : Constant Frame rate : 24.000 FPS ```

It seems, if I remove **-s** option and change **-c** from **mkvmerge** to **ffmpeg** the framerate is correct

Ok, so did some testing with 10 second long video... The only difference was `-c` option. `ivf` outputs a video with 30FPS, `ffmpeg` crashes, and `mkvmerge` outputs a video with...

@shssoichiro https://ufile.io/t1uh3fue

@menditsa I cut it myself with ffmpeg (`-t 10`), but I do not think it is relevant here, as the problems also occur with this exact video. IMO two things...

> Any reason for using docker ? without docker it crashes with a segfault. > Have you built the docker container yourself Nope, I use `masterofzen/av1an:latest`. If I build it...

@menditsa I meant leaving the audio out (`-an`) Can you try to use same parameters I use? ` -i aa10.mkv -l logfile -o aa10k.mkv -e aom -c mkvmerge -a '...

And the frame rate is 24p?

@redzic I still get "Segmentation fault". Is there a way to get more informative error message? Do I need to install any extra vapoursynth packages, e.g. filters?