Ok all:- One thing I don't mind doing when I've got the time, is updating thumbnail images for videos that don't have any. The only problem I see with this however (unless it's jusy MY computer) is that on a lot of occasions, the image looks "compact" & therefore distorted. Now this is in my opinion unfair to the video's poster because I'm trying to capture an image within the video to portray it as best as I can, but this will have the opposite effect if the image looks "warped" in any way.

My question is (& I HOPE this makes sense)......... Are there recommended pixellation measurements I can chop an image down to that ALL computers are visually comfortable with??

Thanks in advance.