On Sep 18, 2008, at 2:08 PM, "Chris Wood" <[EMAIL PROTECTED]> wrote:
The problem is that it doesn't play reliably. On some macs it plays
fine, on others it just shows a still image or a black screen and
plays the audio, but it's possible to see the demo by scrubbing with
the time bar, so there's nothing that can't play. It's leopard only by
the way - on tiger it very nicely plays the music and shows the ending
picture, which was a surprise bonus :D
So, does anyone know why it's not playing on every mac? Is it worth
asking in the quicktime list too?
I've been seeing this on my MacBook ever since I upgraded to Leopard,
but I don't know if that was the cause or if it is a coincidence. The
root cause seems to be that while QT is happy to play a .qtz file, it
doesn't like straight .qtz data in an .mov wrapper, which is what you
get when exporting video from Quartz Composer. After lots of searching
around online, I found some advice that suggested moving the .qtz to a
rendered non-.mov format through the following steps:
1. Open the .qtz in QuickTime Pro
2. Resize the QT window so the video is at the size you want to render
it at
3. Use Save As to save the .qtz file to .mov, setting the duration
there (I loose some quality at this point because of the render)
4. Export the new .mov version to a format of your choice (I tend to
pick .dv because I'm usually going to bring it into iMovie)
It's weird and convoluted, but it seems to work for me so far. That
said, my video knowledge is very small (I'm just a Mac Support tech
who volunteered to do some motion graphics for a friend's film
festival so I had an excuse to play around with Quartz Composer), so
there could be a much simpler and better way to do this that I'm
completely ignorant of.
PJI
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