B. Bogart wrote:
Hi all,
Now that the smoke has cleared a bit from my installation in Ottawa, I'd like to ask about some performance issues with file seeking.
I'm now using mpeg2 (dvd quality or so) encoded videos with single frame GOPs, and seeking them using the table of contents generated by mpeg3toc.
The problem is that two 640x480 videos seeking randomly use up 80% of my new AMD64 3200+. This seems to be a bit of a hog... I also endcoded a test file as "photo-jpeg" in a quicktime container. I could also seek that file, but the CPU usage was about the same - 10%.
hi i have had very similar problems when playing back 2 PAL-videos (uncompressed) with a machine similar to yours (although the 2 video files were on spread on two SATA-raids (raid0, 2 disks)
even though the disc-access should not be a problem, it seems like pd/Gem spent most of the time waiting for the 2 raids.
thus i have changed [pix_film] (and [pix_movie]) to access the disc-arrays in a threaded way. this sped up performance significantly.
the changes are in the CVS. you can turn on/off threading with [thread 0/1( to the [pix_film]/[pix_movie]
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