Pixelation

[ShikaKun]

I was going to make my first serious AMV, but a BIG problem appeared as soon as I started editing.
Some sequences of the footage I decided to use for my AMV is full of Big pixels, especially in the fast sequences. I tried to remove every single frame that contains pixels, but it's just a pain in this way.
When I see my footage with a player it's perfect, the pixelation problem appears only during the editing (and rendering).
I don't believe it's a problem of the footage since my friend (with the same video-editing tool) doesn't have this problem.
I was wondering what's causing this problem, could it be related to my awful video-card?

Thanks in advance for any kind of help.

[trythil]

I was going to make my first serious AMV, but a BIG problem appeared as soon as I started editing.
Some sequences of the footage I decided to use for my AMV is full of Big pixels, especially in the fast sequences. I tried to remove every single frame that contains pixels, but it's just a pain in this way.
When I see my footage with a player it's perfect, the pixelation problem appears only during the editing (and rendering).
I don't believe it's a problem of the footage since my friend (with the same video-editing tool) doesn't have this problem.
I was wondering what's causing this problem, could it be related to my awful video-card?

Post a screenshot. Information on your setup -- software and hardware -- would be nice, too.

[Scintilla]

It sounds like you're confusing <a href="http://s93771304.onlinehome.us/pixelati ... elation</a> with <a href="http://s93771304.onlinehome.us/macroblo ... locking</a>.

The DirectShow decoder you use for playback probably has postprocessing capabilities that limit the appearance of such blocky noise, but these aren't applied to the video when you're editing it.

There are AVISynth filters meant specifically for deblocking; the two I know of that are good for this kind of thing are BlindPP (part of the MPEG2Dec3/DGDecode/DGMPGDec/whatever the hell it's called now package) and SmoothD. Might want to give them a try, they can often be quite effective.