Wavy lines on my footage when panning.

[Martin Chambers]

I've noticed that, in some of my footage that I'm editing with Adobe Premeire Elements 3.0, there is a wavy line (like old fashioned 'interference') at the bottom of my footage when I am panning, say at about lines 530 to 540 (PAL).
I've seen this issue in several clips but only when I am panning!
I've tried to crop the clip but the lines simply move up the footage, so it's obviously not a problem with the camcorder (I think).
What is causing this?
Martin

[anonymez]

Sounds like a problem with your graphics card/display. Updating drivers and setting the refresh rate as a multiple of the video framerate usually does the trick.

[Martin Chambers]

Thanks for that.
How do I 'set the refresh rate as a multiple of the video framerate'?
Also, what multiple would you suggest? (I assume you mean a framerate of 25 fps)
Martin

[anonymez]

How do I 'set the refresh rate as a multiple of the video framerate'?

Control Panel-->Display-->Settings

What refresh rate is your monitor running at?

[Martin Chambers]

60 Hertz.
When I run the footage, it's as though the bottom lines are out of sync with the lines above. Almost like what you see with interlaced footage on a PC except that it's one large step at the very bottom rather than 288 small ones!
When I pause the footage, the resultant still image is ok.
Martin

[Martin Chambers]

Any more thoughts!!??

[anonymez]

Is the problem limited to Adobe Premiere? (i.e. does it happen in a software player?)