HD render weirdness?

SWS wrote on 7/1/2010, 9:34 AM

Working on a "little" HD uncompressed. avi render in Vegas 9.0e 64bit I came across some weirdness....well the file size wasn't "little" I must say!!!!

I'm working with a logo graphic (.jpg) which has a gray gradient background.

As I began a 3D BLINDS wipe ( and it stared right at the very first frame of the wipe) the gray background of the graphic showed what looked like a moire noise pattern as the wipe progressed. And of course was gone as the wipe was completed. The offending pattern showed-up in the gray background of the logo.

Thinking the gradient was the problem I made the background a solid gray...no difference. Having been in 8 bit I tried 30 bit rendering all flavors and blends...no difference.

Went to a simple wipe which had no 3D effect to it and the problem disappeared. Looked like all 3D type wipes have the noise/moire problem for me at least. Maybe as the image is rotated, by the wipe, on the x, y or z axis there is trouble??

It doesn't have a problem if I rotate the image in Track Motion 3D.

Here's the first frame before the wipe...

Here' the first frame as the 3D BLINDS wipe begins...

Any thoughts?
mark

Comments

SWS wrote on 7/5/2010, 1:50 PM

So..... I guess it's just me and my weird 'puter? No one else has ever seen this??....oh well I tried....
Thanks anyway.
mp

Dave_OnSet wrote on 7/5/2010, 6:39 PM

It might be easier to figure out your problem if your clips were visible... At least nothing shows up here on my computer - no pix / no links...

TheHappyFriar wrote on 7/5/2010, 7:59 PM

could you put your image up so I could download & try myself? Then I could see if it happens on my comp.

SWS wrote on 7/6/2010, 7:20 AM

Oh my! Sorry...I made the pics public on my Flickr page and before I was logged into the Sony forum I was able to click on the links and saw them on my Flickr page. Now that I have logged into the Sony Forum looks like I have to drag the link into the http window to link to the pis on Flickr...that does seem strange...Sorry I'm a bit slow at figuring this stuff out. Maybe I can figure out another method to show the pics.
So sorry for my lack of 'puter/ internet savvy.

So this link doesn't show up for you?

http://www.flickr.com/photos/smallwstudio/4751767075/img

mp

farss wrote on 7/6/2010, 7:30 AM

I eventually found your images, the link you posted is kind of broken.

Anyway that is very nasty, I'll try to see if I can repo it. Regardless I'm hard pressed to see that as being a computer problem so I'd send it off to SCS.

Bob.

SWS wrote on 7/6/2010, 7:35 AM

Thanks for checkin' it out Bob. Sorry for the link confusion guys!
I'm pretty bad at this internet stuff.....

Thanks for the advice. I'll wait to see what you find, if anything, and let SONY know.
mp

fldave wrote on 7/6/2010, 9:59 AM

Are your source file(s), project properties and final output the same?

Requiring Vegas to resize in its internal operations should be avoided as much as possible.

Is the source JPG also, in that there could be some barely visible anomaly that gets magnified in the transition.

Edited: I see that the original is a JPG. Can you create a BMP or PNG? I bet it the ugliness goes away

SWS wrote on 7/6/2010, 1:00 PM

Good thoughts.

I did have the logo .jpg a little small so I rebuilt a new logo at 1920x1080 and changed to a BMP and checked out a PNG as well...no difference.

And the project and render sizes were the same in my "before" project and in this one with the logo re-sized. HD 1920x1080 uncompressed .avi at 60i

Good ideas but can see no changes thus far...
Thanks for thinkin' about this though!
mp

fldave wrote on 7/6/2010, 3:52 PM

Sounds like you are correct in that there is a bug in there somewhere. Always good to rule out some potential bottlenecks.

farss wrote on 7/6/2010, 4:55 PM

Have to agree with you.
My first thought was that there was dithering in the grey gradient that a bug in Vegas's compositing was exposing. As such replacing the gradient with something cleaner may have gotten around the problem.
Rereading SWS's initial post it seems he's already tried that so I'm out of ideas as to how to even workaround the problem.

Bob.

John_Cline wrote on 7/6/2010, 7:42 PM

How about if you add just a tiny bit of noise to add texture to the gray background?

SWS wrote on 7/7/2010, 4:12 PM

Sounds reasonable...tried the Photoshop brand of noise Gaussian & Uniform from slight to very noticeable with no change. And just for fun a bit of the Film Grain filter in Vegas no change.

Thanks for checkin' this out with me guys but it looks like it may be a real bug... maybe one that most wouldn't see but I'll let 'em know just to be safe.

Thanks!
mark pleasant