video signal

macgregor wrote on 10/5/2004, 8:16 AM


Hello. I recently learned that when working on the computer there is a limit in lumminance and black level that you are not supposed to pass. in the histogram of vegas, i think the limit is the line that goes after 0 and the maximum level in whites that you should go is the last line before 255.

Why doesn´t vegas then work only in that range of video signal?

Could anyone explain me a little bit more about his?

Right now what i do is color correct and level correct the image until i get the image that i want in the pc screen and then in the main VIDEO OUTPUT FX (the one that affects everything) I select SONY COLOR CORRECTIOR and pick the Computer RGB to Studio RGB so i know the signal will not surpass the limits of a standard television.

But doing this it takes time in processing, probably loss of quality and the preview is slower. So is there anything better to do? am i doing something bad?

thanks for the help

Comments

Liam_Vegas wrote on 10/5/2004, 8:37 AM
Why doesn´t vegas then work only in that range of video signal?

Because for one - Vegas is not just restricted to producing "video" that will be played only on a TV.

If you are using DV footage captured by a camera you should not have a problem anyway... unless you add FX's or other graphics that are themselves going "illegal"/

Not sure what that Sony Color Corrector effect is that you use (or rather why you would use it in this situation) - but I generally just load the Broadcast Colors FX to make sure the whole signal is broadcast legal.
macgregor wrote on 10/5/2004, 9:12 AM
If you add just contrast at 30 for example to a DV footage, the signal will be "illegal".
macgregor wrote on 10/5/2004, 9:19 AM
Oh, great. i am just working with the broadcast colors and it seems it is better than what i i did, because it only affects the areas where there is "danger" and the rest of image still the same.

Looks great! thanks!
musicvid10 wrote on 10/5/2004, 10:14 AM
There's been lots of discussion on this recently:
here's one.