Good Vibrations? Levels ON/OFF?

Grazie wrote on 6/28/2004, 12:21 AM

OK .. . Just been applying Levels.

When I first reviewed my footage, onto an external monitor, when I Pause the play the picture is vibrating .. this I understand . .. But, after I applying "Levels" - in this case upping the Gamma a bit, video was a wee bit dark - the picture on the External monitor no longer vibrates. PLUS, if I now take OFF the FX=Levels the picture doesn't revert to vibrating. Why? . . Seems like Vegas is telling me something. Does setting levels stop this vibrating? I guess there is a fight going on between the 2-fields? .. But other than that, what is ACTUALLY happening?

Another Gap in the Grazie KB!

TIA

Grazie

Comments

taliesin wrote on 6/28/2004, 12:44 AM

Does this happen only when using the Levels filter or does any other filter do same?

Marco

farss wrote on 6/28/2004, 1:07 AM

Applying any FX will cause Vegas to recompress this may have something to do with it.
You could run a small experiment, try pulling the values down so they have no effect, is there still a difference?
I'm sure you get the idea.

Grazie wrote on 6/28/2004, 1:16 AM

Thanks Guys! Obvious when one thinks about it . . . Grazie

GmElliott wrote on 6/28/2004, 6:14 AM

I think I know the answer. The shaking as you know has to do with the interlacing. Now when nothing is done to your footage changing the output quality from "draft" to "full" won't make a change beings no codec has been applied. As soon as you make a change that causes the need for recompression the quality setting for playback take effect. If you have your output quality set at say "draft" you won't see any flickering because it uses a progressive output. However- go ahead and apply your filter and change it to best....the shaking should still be there when paused. Reason being "best" quality is an interlaced output.