View Full Version : Best way to simulate Betacam SP "grey lines" (Guard Band Noise)?


Jack Zhang
November 8th, 2007, 01:52 AM
Here is my problem...

I need a good Betacam SP "grey bar" simulator since my project is HD and I don't have a Beta SP deck.

When rewinding, pausing, or fast-forwarding a Betacam SP tape, the grey line effect is one that I absolutely admire and would love as a VFX plugin or whatever plugin. Does such a plugin that accurately simulates these grey lines exist or does it need to be made first or do I have to capture from a real deck to achieve full authenticity (which definitely is not possible for me)?

I'm running Sony Vegas 7.0e.

Edit: After a little bit of research, What I'm trying to simulate is correctly known as "guard band noise".

http://www.matrixav.com/images/betacam_faq_gray.gif

Anyway to simulate this as of yet?

Alex Sprinkle
November 8th, 2007, 09:39 AM
I honestly don't really know what that means, as I've never used Beta, but is there any way to have this projected? I know you can rig stuff like 8mm grain by projecting to a white screen, then "add"ing or "multiply"ing in the composite mode (FCP) or transfer mode (AE). Is this the same kind of thing?

Jack Zhang
November 8th, 2007, 05:00 PM
I took the image from this page:

http://www.matrixav.com/html/tech_info/betacam_faq.htm

Glenn Chan
November 8th, 2007, 05:17 PM
This is not the particular effect you're looking for, but what about doing that with VHS?

(Of course there's a different look there. But you probably have access to VHS.)

Jack Zhang
November 8th, 2007, 05:40 PM
I realize that effect can be done with VHS but our VHS machine will not generate a grey line but rather static missing video.

Plus the higher resolution of a VFX plugin would be more wise than a SD to HD transfer. I'm searching for a solution to this for HD projects yet still keep a high resolution (no upscaling of real SD Beta SP footage), I want to simulate analog jogging in HD with the grey lines.