Video captured with -n plays much faster

[techtonik]

Just recorded this on Ubuntu 16.04 and it appears that it plays about 3.6x times faster than real time. Command used:

recordscreen.py -n --fps=60 -s 300x1200 mcspeed.webm

And here is the calculation based on video time from VLC and recorded stopwatch - https://www.desmos.com/calculator/q6qd9b6xq5 - doesn't look like it is a VLC bug.

[cessen]

Huh... that's really weird.

Is there anything we can do about that from this script? Or do we need to file a bug against ffmpeg/libav?

[techtonik]

I'd say it is ffmpeg/avconv bug, but it needs to be confirmed. I am a little far from Ubuntu right now.