Hello,
I've managed to make video working with linphone.
With H264 (msx264-1.1.1) video speed and image quality are good, but there's an annoying noise on video and a sort of shadow of prevoius frames.
With H263 I have no video, and it returns following error:
[h263 @ 0xb0232b90] The specified picture size of 640x480 is not valid for the H.263 codec.
Valid sizes are 128x96, 176x144, 352x288, 704x576, and 1408x1152.Try H.263+.