-
SMPTE and RBG
I’ve been using Vegas for a while and am familiar with most of the advanced editing features the program has to offer. This question may sound very basic, but what are the SMPTE test pattern bars used for,and how would I actually use them in a project? Also, what’s the difference between computer and studio RBG and how do I choose one or the other when using the color correction tool? Thanks!
-
2 Replies
-
Ooh! I love color questions. First the SMPTE question. This article is a bit long, but it explains everything pretty well:
https://en.wikipedia.org/wiki/SMPTE_color_bars
As for the Computer to Studio RGB, that is mainly a difference in the way that broadcast studios render color vs. the way your computer handles it. Computers usually use the full ‘0 to 255’ scale for color, like you would commonly see while using Photoshop, but broadcast does not. Using that scale can often cause undesirables downstream, such as an audible buzzing noise (often from the whites being too intense a wavelength. Broadcast applications tend to use the 16-235 scale, as it avoids those problems.
I don’t know if you produce broadcast media, but website video and DVDs usually handle the full 0-255 range just fine, so I don’t use the computer to broadcast option much. I usually leave it on the computer setting.
Hope that helps.
-
I appreciate the info. Thanks!
Reply to this Discussion! Login or Sign Up