Just started playing about with AVISynth

[nutty88]

Over the weekend I've started playing around with avisynth and I would like to know if I'm doing anything wrong. I'm using my WinTV PVR-150 to capture 720x576 picvideo mjpeg with the compressor set to 19. I then use the following basic avisynth script to denoise and resize -

LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\Convolution3d.dll")
DirectshowSource("capture.avi")
AssumeTFF()
SeparateFields()
odd=SelectOdd.Convolution3d (preset="vhsBQ")
evn=SelectEven.Convolution3d (preset="vhsBQ")
Interleave(evn,odd)
Weave()
Spline36Resize (352,576)

Then I use frameserve to graphedit and convert to dvd mpeg using the ATI Avivo codec (very fast mpeg-1/2/4 WMV9 and H.264 codec)

Am I doing anything wrong in the script? What is the best resizer in avisynth for downscaling from 720x576?

[gadgetguy]

Wrong? Only if you're not getting the results you want.
Things I might change...
AVISource() instead if DirectShowSource() if the source is Type2.(Edit: Sorry, missed where you're using mjpeg, not DV-AVI. Ignore this.)
I personally would use Lanczos4Resize() for resizing because IMO it does a better job both ways than any other, and I would resize while the fields are split (although in your case it should be OK), but I don't know why you're resizing at all since you say you're encoding for DVD. I'm not familiar with graphedit or the encoder you mention so I can't comment on them other than to say if you're happy with the results, keep using them. If not, try HCEnc. IMO it does an excellent job and it's free.

[Soopafresh]

Convolution3d is an old plugin. Try some newer ones when you get comfortable.