C++/VB - Video distoration problem with VMR9.

Asked By john

20-Nov-09 03:28 PM

Hi all,

I have a strange problem on my system. I am creating a filter graph in
graph edit for displaying the live video from webcam. The filter graph
contains video source filter which suuport RGB24 and I420 capture
format, avi dec, color space converter and VMR9. The video is
displaying fine when I run the graph But if I open a directshow
application i.e. window media player, and play any media file and
close the application The video is being distorted in the graphedit.
But if I use VMR7 and repeat the same sequence, the issue is not
coming.

Please anyone can give some sugesstion.

Thanks.

20-Nov-09 10:36 AM

Well, the problem could be incorrect color format (RGB, YUV...), or wrong
pitch/stride.

20-Nov-09 12:17 PM

From: "john"


I suggest you define "distorted".


--
// Alessandro Angeli
// MVP :: DirectShow / MediaFoundation
// mvpnews at riseoftheants dot com
// http://www.riseoftheants.com/mmx/faq.htm

22-Nov-09 03:02 PM

Sorry But I am not able to define the exact problem in video.
Therefore I used "distorted".

You can find the images related to this issue in below link.

http://img517.imageshack.us/gal.php?g=3D95116383.png

Please go through the link and suggest me what is going on my system.

Thanks.

23-Nov-09 12:53 AM

It is hard to explain that as anything other than a display driver bug.
Does this happen on any other computer?
--
Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

23-Nov-09 05:25 AM

Yes, I am getting this issue on other system also and with VMR9 only.

23-Nov-09 05:25 AM

de quoted text -

The display driver is VIA/S3G UniChrome Pro IGP on both sytems I am
getting this issue.

23-Nov-09 12:54 PM

g.
Hide quoted text -

I observed that this issue is coming only with VMR9 and colorspace
converter.

23-Nov-09 08:52 AM

It looks like the colorspace converter has problem with a pitch. The data
itself looks okay, but it is not being copied to the right location in
memory.

24-Nov-09 03:56 AM

Ok, If the colorspace converter has problem with pitch, then is there
any solution?

I am also able to reproduce this issue without colorspace converter.
In that case the source filter format is YUY2 and renderer filter is
VMR9.