On Tue, 2003-12-16 at 12:57, Bernhard Praschinger wrote:
> Could you run a few test (please).  Get some frames (100-1000) as yuv
> format. I gues that should be possible even with transcode. ;)
> (I do not use transcode so I can't help, or get the test streams on
> mjpeg.sf.net)

With about 1010 frames of YUV using < to dump it in (instead of cat), I
get these:

-M 0: 2m 11.9s
-M 1: 2m 10.6s, -1.3s
-M 2: 1m 27.7s, -44.2s
-M 3: 1m 26.5s, -45.4s

Note that I responded in an earlier message with a total of 24 timings
across -M 0-3 -I 0-1 -R 0-2 settings, which turned up some interesting
results that -M 3 -I 0 -R 1 worked fastest of all of them (same source
material I used for the above, and it took 51 seconds). So, I think the
-I 1 is on, which makes a huge boost in -M ratings from 0 to 3, but it
is still quite a bit slower than -I 0 (which I use since the input is
Progressive 23.976fps)

> And do afterwards something like that:
> cat stream.yuv | mpeg2enc -f8 -M 0-3 -o test.m2v 
> or 
> lav2yuv stream.avi | mpeg2enc -f 8 -M 0-3 -o test.m2v
> 
> So you can be soure that nothing else makes any troubels. And check
> thant how it is going. That should not take to long. Than you can add
> the options you used, to see if anything there causes the probelm of non
> increasing framerate. 

Compared to the run with my long options line, these are ....

> Bad. WHich board do you have ? (Mine is a Tyan Tiger MPX) 

Nice board, that one. Asus A7M-266D.. I should've grabbed the MSI K7D
Master for the same price, I hear much nicer things about it.

> My brain had given up the time I started my computer that evening ;)

Mine usually does that at about 8am. :>

> But I'm not really knowing why the situation is that bad.

I'm just not seeing the dual CPU usage that would warrant even running
in multiple threads, when I could instead transcode two entirely
separate items as though I had two machines, which makes some sense (I
did that the other day, worked rather well). But, if I can make a single
copy work by flooding both CPUs with activity, then I'll be happier,
since it should take quite a bit less time to encode a full movie.



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