The Quartz Composer Matrix sample code plays audio from qt movies
and passes the frames to Quartz Composer to do with what you will.
http://developer.apple.com/samplecode/QuartzComposerMatrix/index.html
Regards,
Ian
*******************************
Ian Grant
Lecturer in Digital Art
Faculty of the Arts
Thames Valley University
Ealing, UK
W5 5DX
<email@hidden>
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On 16 Feb 2007, at 00:22, Eric Blanpied wrote:
One more idea:
3. QC comp with big sprite getting it's texture passed in from the
Cocoa app which in turn is getting them from a QT movie which is
playing it's audio, but not displaying any video. Perhaps playing
into some separate buffer?
thanks
-e
On Feb 15, 2007, at 4:09 pm, Eric Blanpied wrote:
I've just realized that movies displayed within QC comps end up
silent, which is a bummer for my current project. I need to layer
dynamically updated text over a movie.
Thinking about workarounds:
1. QC comp as layer in QT movie. I can do this, but I don't think
my app will be able to get at the ports to set the text.
2. QCRenderer laid over a QT movie. Controlling each would be
straightforward, but I worry about how well it would work.
Any ideas what the performance would be like on these options?
These are big full screen movies.
What other approaches have people tried?
thanks
-e
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