[FFmpeg-user] Audio synchronisation issues

[Carl Eugen Hoyos]

Dainius (GreatEmerald <pastas4 <at> gmail.com> writes:

> /usr/bin/ffmpeg -xerror \
>  -f x11grab -r 30 -s 800x600 -i :0.0+2,23 \
>  -f pulse -i alsa_output.pci-0000_03_07.0.analog-stereo.monitor \
>  -f pulse -i alsa_input.pci-0000_00_14.2.analog-stereo \
>  -map 0 -vcodec mpeg4 -q:v 3 -qcomp 0.8 -threads 0 -an -timestamp now
> -y Video.mp4 \
>  -map 1 -threads 0 -vn -y AudioA.wav \
>  -map 2 -threads 0 -vn -y AudioB.wav

How can audio and video be in sync (or out of sync) in a video-only 
or an audio-only file?

Complete, uncut console output missing.

Carl Eugen