59.94 fps to 29.97 fps - best method?

[Gargoyle]

I've been playing with my new HD card (Fusion HDTV3), and have converting some captures (1280x720p, 59.94 fps to DVD (720x480, 29.97 fps), and was looking for opinions on the best method for frame rate conversion.
Here's a sample AVS script that I use to frameserve to CCE basic:

LoadPlugin("G:\DVD tools\AviSynth 2.5\plugins\MPEG2Dec3dg.dll")
Loadplugin("G:\DVD tools\AviSynth 2.5\plugins\FDecimate.dll")
LoadPlugin("G:\DVD tools\AviSynth 2.5\plugins\UnDot.dll")
AviSource("G:\capture\video.vfapi.avi", false)
ConvertToYV12()
FDecimate(rate=29.97,threshold=1.0)
LanczosResize(720,480)
UnDot()

Would there be any difference if I substituted the FDecimate command with
selecteven()?

Or should I convert to 24 fps, and set the pulldown for 29.97?

[FulciLives]

You might be better off posting this in the AviSynth forum over on the doom9 website because you will most likely get the answers you need.

They know AviSynth very well there !

- John "FulciLives" Coleman

[hrlslcbr]

You can try 'selectevery(2,1)'
That selects half of the frames giving you a 29.97fps video.
You can convert to 24fps with no stuttering or changing the length too much, but you will lose some quality.

[junkmalle]

A lot of 59.94 fps HD caps I've seen have been 29.97 fps material with every frame displayed twice. So you might not be losing anything when you decimate by two.

[Soopafresh]

I've been testing out the same thing as of late, and found a site you might find useful -

http://www.samek.neostrada.pl/hdtv/hdtv2xvid.htm

[Gargoyle]

UPDATE:
I checked some of my 59.94 fps captures, and as junkmalle suggested, it looks to me that its simply a 29.97 framerate source material, with every frame duplicated.
So, after several test encodes, my conclusion is that it makes no visible difference (to me, anyway) if I use
selecteven()
or
FDecimate(rate=29.97,threshold=1.0) - the output looks the same. and I didn't notice any major difference in encoding time.

Thanks to all for your help and suggestions.

FWIW, here's my project workflow:

Capture w/ Fusion HDTV gold
Edit (commercials, etc.) with VideoReDo Plus (Beta version; opens the Fusion .TP files with no problems)
Save output as MPEG
Use DGIndex to demux audio (I like to keep the AC3 5.1 sound) and create .D2V file
Frameserve AviSynth script (resize to 720x480 + frame rate conversion) to CCE Basic
Re-mux / author with DVDAuthorGUI

[Baldrick]

Gargoyle: and where is your complete guide with screenshots? .....