Tag Archives: Quartz Composer

Working with Quartz compositions in Modul8

By Udart | Published: 28 October, 2009
In Modul8 you’re able to play Quartz compositions (.qtz files) just by dragging them into your media bank like any other movie. However there are a number of problems with this approach: No 1. Performance. I have done tests and often there is a severe drop in framerate for qtz files in Modul8 compared to the [...]
Posted in Cool stuff | Also tagged , | 2 Comments

Quartz Composer performance in Modul8

By Udart | Published: 28 October, 2009
I’ve been doing some testing and it’s my impression that you get a much better performance in Modul8 if you convert your .qtz files to .mov before importing them to Modul8. This can be done by following the steps described in this article: Working with Quartz Compositions in Modul8 I don’t know the reason for this [...]
Posted in Tips and tutorials | Also tagged , | 1 Comment

First impressions of Arkaos GrandVJ 1.2 beta

By Udart | Published: 24 October, 2009
Arkaos is out with a new beta for version 1.2 of their GrandVJ application and that prompted me to check out their software. Especially since they promise support for native Quartz Composer files. The new beta is out for both Mac and Windows. grab it here: http://www.arkaos.net/forum/viewtopic.php?f=26&t=6828 So now I have the beta and since I am [...]
Posted in Software | Also tagged , | 4 Comments

The 5$ video mixer – how to do a DV screen cast through Firewire

By Udart | Published: 30 July, 2009
I have found a way to transfer a live video screen capture from one Mac to another Mac using DV over Firewire. This might be useful for VJs who want to mix video from two computers without using a capture card – the 5$ in the title of this post is for buying a Firewire cable. Have [...]
Posted in Tips and tutorials | Also tagged , , , , | 29 Comments

Rendering Quartz Composer compositions

By Udart | Published: 25 February, 2009
If you have made a Quartz composition you might sometimes want to render it out frame by frame to another format. Here is the way that I found to get the best quality: 1. You need a Quicktime Pro license, which is a paid upgrade to the free Quicktime Player. Get it – it’s useful [...]
Posted in Tips and tutorials | Also tagged | 2 Comments

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  • About Udart

    Udart (aka. Vibeke Bertelsen) is a visual artist based in Copenhagen who specializes in motion graphics and video projections for live music and other events. I use my own video and animation productions and mix them on the spot at the performance. Contact me on