Resizing video in VV3?

valnar wrote on 6/3/2002, 1:19 PM

I searched this forum but didn't come up with a conclusion. Does VV3 use bilinear or bicubic for it's resize method? How does it compare to VirtualDub?

Or, if necessary, is it possible to frame server this to VDub to use its resizing capabilities?

Robert

Comments

Cheesehole wrote on 6/3/2002, 7:05 PM

ahhh... if only you had searched on "bi-linear" :D

here's the info you need:
http://www.sonicfoundry.com/forums/ShowMessage.asp?ForumID=4&MessageID=95119

BillyBoy wrote on 6/4/2002, 12:01 AM

Hmmm... if you follow the link I can almost hear someone asking what's the difference between Bilinear Interpolation and Bicubic.

Quality of course, but why?

In Bilinear Interpolation any pixel that needs to be added to achive enlargement of the image (like when you increase the frame size too) gets the color information from its neighboring pixels to the top, bottom, left and right of the original position. Pretty simple and thus faster but the quality isn't as good as the Bicubic method which uses a weighted average.

In additon to looking at the top, bottom, left and right neighboring original pixels, Bicubic also looks diagonally, averages the sum then gives a preference to any predominate tone. Pretty cool, will take longer to compute however. Vegas Video is really doing a lot of pixel shuffeling which does take time, more so when you use lots of FX filters right SF guys?