I using ffmpeg to record Xvfb and audio from pulseaudio. Sometime the video output has the audio ahead of video ( sometime normal - it happen randomly ). The flow like this
ffmpeg
|-> video : Xvfb -> Firefox
|-> audio : pulsesaudio
So I don't know where this issue come from : ffmpeg or Xvfb or Firefox or pulseaudio
I already updated ffmpeg to latest version. Tried to config pulsesaudio load-module module-udev-detect tsched=0. Nothing help.
