[Asterisk-video] app_transcoder and sip media

[Reza Fatahillah]

Hi, 

I'm using asterisk 1.4.
I have configuration like this 
IPPHONE(MPEG4) <--> ASTERIX <--> HANDPHONE

My ipphone can only use mpeg4-es, so i tried app_transcoder.
But nothing happen, i still cannot see the video.
After displaying sip log, it happened that video info was rejected, the handphone reply with audio only.

Does app_transcoder do sip manipulation too, i mean change mpeg4 to h263 when doing message exchange? 

If not how to change MPEG4 codec to h263 when doing sip message exchange?


Thanks alot
Reza