color banding question

cef wrote on 2/18/2004, 9:19 PM
hi everybody. i have this project and in it, i was animating light rays on text. previewing the sequence on the preview window lloks fine but rendering causes banding on the edges of the light rays. i read somewhere that the (probable) cause for this is that the NLE is set at 8 bits per channel of color, and can be fixed (at least in after effects) by setting the project to 16 bpc prior to rendering. can i set vegas to do this too? if not, is there any workaround or technique that i can use so as to minimize banding? thanks in advance.

Comments

cef wrote on 2/18/2004, 9:23 PM
Are you watching this on a computer monitor? TV monitor?

What render settings did you use?
beerandchips wrote on 2/19/2004, 9:25 AM
Welcome to DV baby. 4:1:1
cef wrote on 2/19/2004, 7:07 PM
this is wierd. after putting up the initial post, i added a second one but now, somebody else asked me if how i render but the name says it came from me. well, to answer that question, i notice it on my pc monitor and also on a tv (via canopus advc 100). i rendered the sequence (since it is kinda long) into a 6 minute avi file and then assembled several rendered avi files to render the final project. i already see the banding after the first render to avi. i tried the different templates in vegas including uncompressed but the banding is still there. i tried burning the final project to a dvd rw and watched it on tv, the banding is not as obvious as it is on the pc monitor but is still there. i then tried to render the sequence as mpeg 2 (using different settings) and viewing that mpeg file in wmv9 and still the banding is obvious.

thanks to the responses and the interest.
GlennChan wrote on 2/19/2004, 10:28 PM
Can you put up a cropped lossless image showing the banding? I'd be curious to see what happens.

I know you can cause banding by lowering and then raising color values, but that's somewhat contrived. If color values are going in one direction then banding shouldn't really happen.
cef wrote on 2/19/2004, 11:16 PM
i will try to re-create an image of it since i already had this burned to dvd. as far as the rest of what you said, it just went over my head......so much to learn i have.....talking like yoda, why am i?
farss wrote on 2/20/2004, 12:21 AM
What sort of connectio do you have from the ADVC-100 to the TV?
If it's composite video that will not help either. You could try using colors that are not so far apart on the color wheel, this may help.