[QLab] [Qlab] Video Input??

[Gareth Jeanne]

Hi Dan

Thanks for you thorough write up, very very useful!!

I have been playing around with this today with mixed success, i have 
managed to get the webcam on my macbook pro displaying on a second 
display, but i can only use it once, and by using the fade and stop 
commands i can fade it out, stop it, then to bring it back in, add a 
start cue followed immediatly by a fade cue to 0.1%, then fade it up to 
100% over a time.

The only thing that can't be done in any way that i can see is altering 
the geometry of the video cues, is there any hack to allow this, i.e to 
allow the video to come in in different sizes/locations??

Cheers

Gareth
Daniel Hoole wrote:
> Hi Gareth,
> We've done a couple of shows where a live camera feed was used
> (multiple times in one show). We used Quartz Composer (there is a
> "live video" patch, just connect it to a "billboard" renderer patch),
> capturing an s-video camera feed using a canopus AVDC55. As Chris
> says, only one instance of the live feed can be running at once (make
> sure QC and QT are quit before using Qlab), furthermore, only one
> instance of the live video cue can exist in any workspace that is
> open. If you need the live video in several places in a show, have a
> separate "live video" cuelist, then use start commands in your main
> cuelist to launch the live feed.
> Also, the inspector won't show a preview of the captured feed and let
> it stream to the output, so in "show mode" make sure the inspector
> isn't open. I seem to remember there being an issue with unsaved
> workspaces and the "live feed" hack. For safety's sake I tend to
> assemble my workspace with the live feed in it's own cuelist, save the
> workspace and quit, then relaunch the workspace (Qlab had a tendancy
> to "toggle through" the live feed device list that QC was using if the
> workspace wasn't saved, so you sometimes got the isight camera feed
> instead! This was solved by always using a saved workspace, and
> therefore could never accidentally happen in show mode).
> To reiterate Chris's last post, it's a hack, or a workaround for now,
> but it's worked great for us in Birmingham. The fade cue works great
> on a live feed!
> Hope this all helps!
> Cheers,
> Dan
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