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Tried SetMemoryMax(512) - but that didn't go too well. I got up to 0.3-0.4 fps, and after a couple of hours it crashed.
Trying SetMemoryMax(800) on that pc now, and it's currently at 0.85 fps. That is QTGMC + X264 compression.
On the other pc, I'm using normal AviSynth (non multitasking), I've divided into four Avisynth scripts with trim, and have four VirtualDub sessions running at the same time. Combined, the four sessions run at around 4 fps. Looking at the Resource monitor, it's at ~100% usage across all cores (though it's very responsive, I'm typing this on the same pc), disk IO has been between 3 and 9 MB/sec, and I'm using about a third of my available ram.
The scripts I'm running now are like this:
1:
AVISource("F:\render\video.avi", audio=false).AssumeFPS(25,1)
trim(0, 35000)
QTGMC( Preset="Very Slow" )
2:
AVISource("F:\render\video.avi", audio=false).AssumeFPS(25,1)
trim(35001, 70000)
QTGMC( Preset="Very Slow" )
etc.
Unless this fails spectacularly, I think we have a solution I'm happy with.
Thanks for the input pals!
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