All posts tagged: Quartz Composer

Lost In Uncanny Valley

That’s what I call my current visual explorations. There’s something endlessly fascinating to me in these 3D humanoid characters and their movements so I will definitely continue to explore this theme through animations, VJ performances etc. Here’s a few animated GIFs (I hope they play in your browser) plus a video from a recent performance in Copenhagen as a part of Obscura – the group of people I’m working with. Live music performance by ir (aka. Jonas Olesen), visuals by Udart. Copenhagen 2012

Orchidelia – miniature mapping

Here’s a short segment I did with a video projector and an orchid – not an image of an orchid but a real live house plant. I projected images made with eMotion and the Quartz Composer Soundflower patch onto the petals of the flower.

Working with Quartz compositions in Modul8

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 framerate in the Quartz Composer editor. No 2. You cannot decide the rendering size of .qtz files in Modul8 (in version 2.5). They are always rendered as 640×480. In Modul8 v2.6 you can set the size in Preferences but there may be many situations where you’d like to set the size for the individual files. No 3. You cannot set the duration of .qtz files in Modul8. Duration will always be 30 sec. I find that these problems can be solved by following the steps below and converting the .qtz file to a .mov […]

Quartz Composer performance in Modul8

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 so I don’t know if it’s a general problem or something that is limited to my OS/hardware combination. I’m running Snow Leopard on a 2.4 GHz duo core Macbook Pro. So if you’re curious here are the files that I’ve tested with. I get approx. 14 fps with the .qtz but 57 fps with the .mov in Modul8. In Quartz Composer editor I also get around 57 fps. particleleaves 6 (mov) particleleaves 6 (qtz)

First impressions of Arkaos GrandVJ 1.2 beta

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: So now I have the beta and since I am a seasoned Modul8 user I thought I’d try and do a Modul8 versus GrandVJ feature comparison. Keep in mind that I have a total of 5 hours of experience with GrandVJ versus 3 or 4 years with M8, but I will try to be fair and balanced. General impressions of GrandVJ The basic idea of GrandVJ is not that foreign when coming from Modul8. A lot of the features are pretty much the same in both apps and I don’t cover those here. For instance the midi mapping and key mapping seems to work […]

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

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 a look at this video tutorial or read on for a text version – sorry about the less than optimal video and audio quality – this is my first attempt at doing a tutorial: First of all you need to download a couple of components which I have collected in a handy zip file: DV screen capture components Here are the links for the original sources of the components in the zip file: VirtualDV (in FireWire SDK 26) Quartz Composer Live DV v002 Screen Capture Please be aware that as I have not […]

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Rendering Quartz Composer compositions

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 every day when you work with motion graphics. 2. Open the qtz file in Quicktime Pro. 3. Hit ‘Save as’ and set the duration you want for the final movie. Now the file has been saved as a .mov file, but we’re not done. The file is still basically just a .qtz file in a Quicktime packaging. Step 3 4. Open the new .mov file in Quicktime (if it has not automatically opened in a window already) 5. Hit cmd+J to display the movie properties 6. Click on the second line where it says Quartz […]