Conversion from mkv to mp4 FAILED!

[malekkat]

I used bbb-downloader for capturing the full playback with the elgalu/selenium Docker image, But a problem arose with the conversion from mkv to mp4, When the conversion ends the output file do not .
screenshot about error.pdf
Thanks.

[trahay]

This looks like a problem with the options passed to ffmpeg for transcoding the video, and it is discussed in issue from the elgalu/docker-selenium project: elgalu/docker-selenium#147

I don't know much about ffmpeg magic, but you can try to change line 104 in capture-full-replay.sh:

  -e FFMPEG_CODEC_ARGS="-vcodec libx264 -preset ultrafast -pix_fmt yuv420p -strict -2 -acodec aac" \

Maybe some other ffmpeg parameters would work for you ?