Quartz Composer and Revolution

Andre Garzia soapdog at mac.com
Tue Nov 14 02:55:50 EST 2006


while I think it's terribly easy to make quartz composer compositions  
(is this how we're supposed to call them?) access the iSight or any  
videosource, and apply effects to it, I think we have no methods for  
picking that and saving to a file. I think it all happens in runtime  
and that you can't pick your videograbbing + effects and save for  
example the last 10 minutes of interaction so that we can replay it  
later. But quartz composer is cool for making screen savers that  
present real world data in creative ways, for example displaying  
computer sensor data and mails, or getting news feeds from the tubes  
and eye-candy-ing them into nice things.

If you ever find a way to record what is being played so that we can  
replay it later, please post this here for I'd really use that.
PS: happy compositions for you!


On Nov 14, 2006, at 2:02 AM, Brent Anderson wrote:

> Hello.
> I've had this on the back burner for a while, but I haven't done  
> anything about it until now. If you have a Mac and Apple's  
> Developer tools, you can create a .mov file that will access your  
> iSight camera (Or anything else that can be made in Quartz  
> Composer, for that matter). Note that I have only tested the .mov  
> file on my Mac. If you can get a hold of one and move it to a PC,  
> let everybody know how it works.
> I'm not going to go over quartz entirely, here is the simple way to  
> make the iSight movie.
> Go to Quartz Composer (/Developer/Applications/Graphics Tools/ 
> Quartz Composer) and create a new composition. It should be blank,  
> so if it fills it in with a template, just delete all the  
> components with a quick Apple + A and delete. From there, add a  
> Billboard component and a Video Input. Drag from the Image output  
> on the Video Input module to the Image input on the Billboard  
> module. Save this if you like or make your own tweaks to it. Once  
> you're ready to move into Revolution, go to File > Export as  
> QuickTime Movie (Cmd + E) and save it to your disk. It really  
> doesn't matter how long you make it, since it is all rendered on  
> the fly anyway (My five minute clip was 8 kb).
> Now for the easy part: Go to Revolution, create a new stack (if you  
> don't have one up already), create a Player control, and set the  
> fileName (Media to use) of it to the filepath of your movie. It  
> will bring it up in your stack, but it will not be live. To make it  
> live content, all you have to do is start your player going using  
> "start player "player"" in the message box.
> From here, it's very easy to create complex animations and effects  
> all from the comfort of Quartz Composer. If anyone finds any really  
> great effects, post them here!
> Thanks,
> Brent Anderson
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