In reality. the encoded motion vectors do not always relate to the
actual object motion. Try Google first, there're such applications /
demo videos.

http://www.google.nl/search?q=mpeg+motion+vectors+moving+object+detection+extraction

Telsmon.media@gmail.com wrote:

> Can any one tell me whether it is possible to do motion detection from
> a stream of mpeg4 video.
> My intention is to check motion detection from an IP camera which
> stream video in mpeg4 format.

The motion detection data is already embedded into the mpeg data stream. 
  All you have to do is extract it from there.

Vladimir Vassilevsky

DSP and Mixed Signal Design Consultant

http://www.abvolt.com

Hi

Can any one tell me whether it is possible to do motion detection from
a stream of mpeg4 video.
My intention is to check motion detection from an IP camera which
stream video in mpeg4 format.

Hope you will help me with good input.

Thnx & Regards
Telsmon Augustine.
E-Mail :- telsmon.media@gmail.com