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VIP Deinterlacer jumping

Altera_Forum
Honored Contributor I
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Hi all 

I use a motion adaptive deinterlacer with triple frame buffer 

In my design. 

When using frame rate, the output looks fine and stable for 

A few seconds but then the picture start jumping up and down 

And after a few more seconds it become stable again. 

The above problem is cyclic, and nothing I do make the picture 

Stable all the time. 

The input source to the VIP is stable, and I follow the reference design 

From Bitec, but not converting the video to RGB 4:4:4 (stay in YUV 4:2:2). 

What is wrong? 

Thank you in advance 

Inon
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