Movie Importer

I am writing a program for OS X Lion that is basically a video mixer. I create a QCRenderer with my patch using initOffScreenWithSize:colorSpace:composition:. I then programmatically pass video from a camera and a path to a movie file to two separate inputs of the patch. The movie file is then loaded by a "Movie Importer" patch. The problem is that the movie importer returns an error and no movie.

The error is: *** Message from : ERROR: Running movie on thread 0x109106000 while initialized on thread 0x1053b5000

This message appears upon processing most of the frames, sometimes it works. This is what I'm doing to get an image from the QCRenderer.

[offscreenQCRenderer renderAtTime:[NSDate timeIntervalSinceReferenceDate] arguments:nil]; NSImage *frame = [offscreenQCRenderer createSnapshotImageOfType:@"NSImage"];

Inside the patch I the "Movie Importer" patch time is set to external, and I pass it a modified patch time; looping the overall patch time with a "Round" patch to the length of the movie.

Any help with fixing this is greatly appreciated.

I am testing a very simple patch that imports and plays a small Quicktime sample movie.

It plays well as a normal QTZ file but when I try to run the app created by QuartzBuilder 1.4 it opens the window but does not display anything.

I can get the movie to display temporarily, either by switching tasks (tab-command task switching) or by dragging the window around the screen.

When I do this, the I see samples of the movie within the window. As soon as I stop doing either of these things, the movie freezes at its current frame.

I urgently need to launch a QTZ app fullscreen on a second monitor at startup for a public exhibition that goes live soon. This is why I purchased QuartzBuilder.

I would really appreciate some help getting this working.

I'm using a 2.6 GHz Intel Core 2 Duo MacBook Pro with 3 GB RAM and OSX 10.7.3.

I cannot downgrade to pre-Lion release due to other components of the project.

I've attached my test files for your inspection.

Many thanks.

Richard

i'm currently working on an interactive project where the speed of a bicycle dynamo will generate a midi cc signal that will interact with movie playback rate and exposure in qc. i got an arduino and a midi shell on it's way, the excellent tom scarff has been very helpful! using the movie importer in asynchronous mode, i have access to the playback rate. but it doesen't exceed 1. i've tried searching the site for posts that've touched on this topic, but haven't found any. could someone help out? i thought of a dirty workaround to export the sequence at double speed, and use rate 0.5 as normal, but it will have quite a severe impact on audio.