[QLab] video cross fades - wha?

[Jen Simmons]

Both of these comments help a lot!!!

AH.... high quality coax is the cable of choice, then run either  
rgbhv (5 strand), s-video (2strand)  or component (1 strand) signal  
over it, depending on how much of it we can get and how much we can  
invest into all the connections. Excellent. I love listservs.

Any thoughts on when / if a boost to the signal is needed??

thanks for taking the time to check out our plot,
Jen


Jen Simmons
jen at jensimmons
http://jensimmons.com
http://milkweedmediadesign.com
http://loveconjureblues.com


On Jun 6, 2007, at 2:17 am, Daniel Hoole wrote:
> Hi Jen
>
> If you lay two runs of decent coaxial cable, you can stick a couple of
> those S-Video to two BNC Y-splitters on the ends, that way, you get
> the benefit of S-Video, but with a decent sheilding along the length.
> A year or so back, I did a show with a Barco projector, where we ran a
> double length of coaxial, in order to acheive an S-Video input over a
> long length. Out of interest, we tried out the composite input on the
> projector, to see the difference between S-Video and composite. The
> results were pretty surprising- I was sceptical about there being a
> tangible difference, but over the length we were sending it, S-Video
> looked way better!
> Hope this helps
>
> Dan


On Jun 6, 2007, at 12:09 am, Mike Benonis wrote:

> Looking at your plot, if you can't get ahold of an RGBHV snake to use
> for this, I would go with quality coax cable to run your video.
> While the resolution will be decreased from RGBHV, this is the best
> you can do with composite video.  S-video will not improve anything
> because the shielding in S-video cable is not nearly as good as in
> quality coaxial cable.  Heck, if you can get a spool of coaxial cable
> (500 or 1k ft), just make your own RGBHV snake and use that!
>
> By quality coaxial cable, I mean quad-shield RG6 or better coax,
> terminated with quality RCA or BNC connectors (NOT the cheap crimp-on
> ones you get at the Rat Shack, but Thomas and Betts or similar
> compression terminations).
>
> That help at all?
>
> Best regards,
>
> Mike Benonis
> Electrical Engineering '09
> Department of Drama Sound Engineer
> The University of Virginia
> mjb8h at virginia.edu
> (703) 577-3788
> KI4RIX

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