I try to make a screencast where I need to record both microphone and pc output sound (and video of course) . I tried to make a loopback in pulseaudio to "merge" them and using this sink with the recording tool (first i tried recordmydesktop then ffmpeg/avconv).
But the issue is when I use this loopback , the sound is glitching (I think this is the better word describing it) and have progressive delay (meaning a lot lot delay after 2/3 minutes). This is not happening when using direct output (mic or pc output).
I tried to reduce the delay of the loopback to 1ms , didn't change anything (it didn't want 0ms)
Is there any way I can resolve this. I hear about realtime pulseaudio but i think this is a kind a cpu eater? (and we need a RT kernel wich I think I don't have)
I also try to install jackd but without great success (and apparently it's a pain in the ass to make it working with avconv).