Digital artifacts

Cincyfilmgeek wrote on 9/16/2007, 9:40 PM

I have posted a few times on here about this problem but does anyone know what in the render could possibly be causing digital artifacts like on peoples faces. There not bad but the faces and edges of people aren't as crisp as they are before the render it is as if the pixels aren't right. These artifacts are not there until after I render so I am doing somethign wrong in the rendering process and I can not figure out what it is. LOL, it is driving me crazy. Any help would greatly be appreciated.

Thanks,
David

Comments

Cincyfilmgeek wrote on 9/16/2007, 9:52 PM

Ok, so after further review I noticed the digital artifacts were in my footage on the timeline as well, but it was the footage I had used Ultimate S on. I got rid of the render I had done with Ultimate S and looked at my footage again and the digital artifacts were gone. How could Ultimate S be causing the this? I used the render to turn my footage into 24p and used desaturate. Any ideas?

David

John_Cline wrote on 9/16/2007, 10:32 PM

I assume that you're using DV footage. The 4:1:1 color sampling of DV is pretty fragile. Are these vertical artifacts on the edges of high contract areas and are they areas about 8 pixels wide?

FrigidNDEditing wrote on 9/16/2007, 10:52 PM

Ultimate S doesn't actually do anything to your footage that Vegas doesn't do already, but the only thing that I can imagine is if the 24P change was happening, however some sample clips or screen grabs of the problem would give us a MUCH better idea of what you're talking about.

Dave

farss wrote on 9/16/2007, 11:12 PM

One other question, what sort of footage, e.g. NTSC, PAL or if HDV is it 50i or 60i?
And what are your project settings?
And as others have said a screenshot would be extremely useful.
Even knowing which camera was used and a bit about the camera settings would help avoid unkowns.

Bob.