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View Full Version : Comparisation dup vs. copysame


vidiot
11th September 2002, 15:57
...i did a quick test yesterday with 1 minute of anime.

My filter chain looks like this:

SegmentedAviSource("F:\Trickfilm.avi")
Telecide()
Cnr2(0,50,192,35,210,35,210)
TemporalSmoother(1,1)
Convolution3d(1, 15, 50, 10, 10, 2, 0)
AddBorders(16,16,16,16) #doensnīt need any resize since itīs
#captured in the right resolution...
# resulting res: 480 x 576 PAL SVCD

...and after those I tried 3 different ways:

1. leave it as it is
2. tryed dup, settings: Dup(5,85,false,true,10,false)
3. tryed copysame (V1.2beta), settings: CopySame()

First i did open all in VD to see how many fps i would get.
1. one was the fastest (~ 15-17 fps)
2. not really bad (11-14 fps)
3. on par with 2.) maybe slightly faster (~12-15 fps)

...i could have measured precisely but it starts getting late.

I encoded all three to look for differences (MPEG2 /2pass /...):
With the same parameters - no difference in size! (no wonder at all)

But the speed differs:
1. 0,55 fps
2. 0,15 fps !!!
3. 0,40 fps

As you can see -> there is something happening .
I checked it again, with the same results.
All I can tell is that dup "seems to have worked more" when comparing the mpegs.

Maybe itīs an buffering problem, but i tested it also with settings like:
Dup(5,85,false,true,30,false)
which gave me the same speed.

Why do i tell this?
Dup fits my needs better than copysame (at this time) I like the modus with the tiny littel window.
Simple said: Itīs easier to tweak.

Please Donald and Marc:
Put your heads (not bang) together - this looks very promising.
At least I have to say that iīm going to be an anime fan just because of avisynth. :D

Harald

Guest
11th September 2002, 16:23
I will be releasing new versions of Dup() shortly. First, improved detection and elimination of floats. Then optional subsampling for speed. Finally, low-level optimization (MMX).

Thank you for the results.