[M4IF Technotes] Use Rtp to transport Mpeg4 video

Hans-Juergen Bardenhagen hans-juergen.bardenhagen arcor.de
Wed Jul 30 14:06:33 EDT 2003


On Thursday, 03.07.03, 09:14 (received 03.07.03, 06:49) Li wrote:
> Now I'm trying to transport Mpeg4 video stream over RTP, and coming
> against a problem. The RTP says that the configuration information,
> such as Visual Object Sequence Header and other headers, should be
> bond into a rtp packet. Then How to determine the time stamp of such
> a rtp packet? The time stamp of the rtp packet consisting of a vop
> can be easily determined by inspecting its vop-time-increment syntax.

As far as I know, the elementary streams in a MP4 container must be  
"hinted" for this, i.e. creating individual time stamp tracks that are  
added to the the container. At least this is how the open source MPEG4IP  
project handles RTP streaming e.g. with Apple's Darwin Streaming Server  
(DSS). See http://sourceforge.net/projects/mpeg4ip/ for more, they also  
have a web forum which you can search through and ask Bill May from  
Cisco if you need further information.
ZZee ya, Hans-Jürgen


More information about the Mp4-tech mailing list