Removing (tv) scan lines from an image

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Does anybody have any tips on removing scan lines from a photo which, for example has been taken of a TV image and then obviously has faint dark lines along the image when its brought up on a PC.
i'm just trying to get some images from my xbox of a few things, but obviously the quality is poor to say the least without some photoshop work.

 

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i'm afraid not...i've not tried the clone because it'd take litterally hours...and its just not worth it...heres a sample of what i've got -






this image on screen looks really good (not amazing as its not HD, but still it looks good!) and as you can see the lines aren't really very visable here...more just blur caused by the different shutter speed, but still, very hard to edit

 

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cheers for the tips, i'll take them into consideration...MS should just really release software for transfer to PC...avoiding all these problems!!!


that gaussian blur works really well thanks