Question [Q] No sound on video call, just loud static noise

I have looked through the forums and googled this far and wide, but couldn't find anything. When I make a video call on my Samsung Galaxy S 2, there is no sound except a very loud static noise. Has anyone had a similar problem?

I'm on Pure ICS Rom by Spike_M, have tried different kernels and modems, but couldn't fix it. The interesting thing is that my brother has the same Rom and setup on his SGS2 and he doesn't have this problem. Also video calling through Skype works fine!

Appreciate any help!