I recently purchased a cheap yet completely rubbish, unbranded chinese webcam. I loves it to bits.
Nonetheless, it has a few problems. Namely the format choice is not saved through reloads of Yawcam. It is capable of 640x480 (this is also what my overlay is set to) but it reverts to 320x240 when Yawcam is restarted.
Is there any more info I can provide to help with this?