Slow frameserving with Avisynth

[Xaanin]

I'm on a T-bird 900, 384mb PC133 ram. When frameserving with TMPGenc (through VFAPI) I get an encoding speed of 0.9-1.0, but I've recently started frameserving with avisynth (no VFAPI) and my speeds are terrible. Speed is usually around 0.46-0.51. I'm only doing video with CCE.

On my brothers Duron 800 with 256mb PC100 ram he gets a speed of .075 when using Avisynth (same script, same file to encode and same CCE settings). Any idea what might cause this?

My avs script looks like this:


AviSource("F:\STARGATE - SG1 - [4x04] - Crossroads - [350]-[AC3]-[AMC].avi")
BicubicResize(448,542,0,0.6,0,0,640,360)
#TemporalSmoother(2,2)
AddBorders(16,17,16,17)
#Trim(0,63678).FadeOut(150)
ResampleAudio(44100)
# CCE 2.5 'crashfix' for Athlons
## If you want this 'fix' permanently, edit the INI-file:
## Under [AVSscript] set the CCEcrashfix-option to
## CCEcrashfix=1

[Boulder]

The speed you have is just normal. I've got CCE running at 0.6 at max(TB1400).

[Kedirekin]

What is your source? If it's a DVD2AVI d2v file, then mpeg2dec is much faster than avisource.

[Xaanin]

The Source is a DivX.

[Boulder]

The speed seems to depend a lot on the size of the video file you are encoding. I tried encoding a 2-CD DivX rip and it went at 1.2 max. When encoding a 30-gig Huffyuv compressed VHS capture, it was a lot slower.

[jdobbs]

Try using DirectShowSource(movie,fps=xx.xx) instead of AVISource()I've found it to be much faster on AVIs that use the DV CODEC. I haven't personally tried it on DivX, though.

There are other variables that can make a difference between your machine and your brothers... I saw a huge performance jump in video processing when I went to an ATA-100 hard drive at 7200rpm.