[Asterisk-video] app_transcoder and videocalls

[João Serra]

Hi, currently playing with SofiaSIP library and i'm thinking in coding
a video capable(via gstreamer) SIP UA for a Linux STB connected to a
USB Webcam.
However, all consumer-level webcams output only MJPEG video and i
cannot afford to do any kind of video transcoding on the STB
itself(the STB has a 300mhz mips cpu)

So, can i use Asterisk with app_transcoder to transcode mjpeg
videocalls to/from h263 or h264. Also, what delay will app_transcoder
introduce?

Thanks.