blend image use VMR9

I blending an image on the video use VMR9,when the video is rendered in it's native size,the image is ok,but when the video is resize(such as 320X240 to 640X480),the image is blured.
[184 byte] By [cominfo] at [2008-2-5]
# 1

What is the size of the image that you are blending?

I assume the native video size is 320x240. When you stretch it to 640x480 you should see slight blurring (or specifically aliasing) of the video also. Are you seeing that the image is getting blurred worse than the video?

Sumedh

SumedhBarde-MSFT at 2007-9-10 > top of Msdn Tech,Audio and Video Development,Media Foundation Development...