#579 MPEG4 Encoding not working

[Chris Skinner]

Hi,

I wonder if anyone can help me, I am seeing a very strange issue when using
the latest encoder to encode a video stream to MPEG4.

I am using a hardware frame grabber made by a company called Epiphan, which
provides a DirectShow source filter presenting individual frames to a
filtergraph.

The frames are 1600 x 1200 resolution, at a rate of 1 per second.

I am using a Windows platform with XP Professional, Service pack 2, the
system has a Pentium D dual core 3.2 GHz processor and 2GB of RAM.

I have ffdshow working correctly on various different machines, however on
this platform there are significant problems. If I try to encode to an avi
file only the first frame seems to get encoded, and if I run the filter
graph attached in the jpg, which has the video source -> ffdshow encoder ->
ffdshow decoder -> video renderer, no video image is seen, just a green
screen. If I use other compression techniques (MJPEG) the video image is
encoded and decoded correctly.

I have tried forcing the output to RGB24, YUY2 and UVYV but it makes no
difference.

Do you have any idea why MPEG4 enocding is not working on this platform.

Regards,

Chris Skinner.

[Chris Skinner]