I've been trying to get video calling to work over either Ekiga or 2Talk but haven't had much luck. The app of choice seems to be SIPDroid but it refuses to connect at all over 2Talk and gives me audio only via Ekiga.
Vippie supposedly supports the right video codecs (h.263 & h.264) but it doesn't support dialing off-network SIP addresses (which is a bit poor).
I've got all the codecs enabled in my 2Talk settings so that _should_ be ok.
Ideally I'm trying to get my Galaxy Tab to be able to dial in to our Tandberg system. I can get it working fine audio-only using the native SIP support in Android 2.3, but I've yet to have any joy with video.
Has anyone had any success with SIP video & Android?