It's really hard to say in general where the bottleneck could be. It
could be the Hard Disk, CPU, graphics card... And even if QTPlayer
makes the correct assumptions to make all those components work
together properly it can't be guaranteed to work in Quartz Composer
because (as mentioned in the linked post) we need to be more general
with our timeline handling. For us to have all frames available all
the time would expand the memory by a great deal and there would
probably still be slowdowns due to paging.
If you would like specific advice you could send your config info,
video type, etc and maybe someone has experience with that setup.
On Oct 16, 2007, at 9:35 AM, wolfgang oblasser wrote:
hello there at the quartzcomposer list:
we have problems when using the image with movie patch.
after playing a video to a connected billboard patch a while, out of
nowwhere the refresh and rendertime jump to 150ms and more. (see
rendermode profile)
we switched nearly everything off that could cause this problem.
when playing in quicktime, the video behaves ok.
this post ist referring to the post on april 2006 and the following
http://lists.apple.com/archives/quartzcomposer-dev/2006/Apr/msg00098.html
but the problem is not the framerate, which ist ok, it is the nearly
freezing of a frame.
our setup is simple and the same as on 2006/Apr/msg00098.html
drag a 720p mp4 movie into the editor window
connect it with a billboard patch
set width to 2
watch playing for a while
what can cause this?
sincerely wolfgang
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