Interest of a NTSC to PAL conversion

[clima]

I have spent a lot of time reading threads around forums related to framerate conversion. I am willing to "summarize" parts of it since most of debates were about the inverse, PAL to NTSC.

In a few words, I am from Europe and willing to study the pros & the cons about such a framerate conversion. (I can't just do a NTSC dvdr since I am willing to filter the original DVD to remove some defaults)

Assuming this is done with CCE, they are sereral ways to succeed :

- the better one as far as I know, 29.97 fps to 23,976 fps as usual and then a 23,976 fps to 25 fps by a AssumeFPS(25).

- A direct framerate conversion with a tool like MotionPerfect in huffyuv (done by some european manufacturers), but seems to give poor results.

Or all of this is just bullsh*t, since a 23,976 fps with pulldown will be perfect ?

I'm not searching the best solution (just read the rules :p ), just willing to debate of this.

[screw]

I have done this, using first method (AssumeFPS (25)). The result was fine, just it is nesessary to re-encode audio, since it has to be "streched" to 95.904 %. I decoded audio to six waves, made the streching for each channel with Cooledit, and than encoded back to AC3. Synch was fine afterwards. Actually lot of job to do manually, but I did it just to check, what will be the result.
Another issues are subtitle timing and chapter points - I did not find a tool, which could convert chapter points, changing fps from 23,976 to 25.

Here is my AVS script:
--------------------------
# NTSC DVD (23.976 fps) to PAL DVD (25 fps)

LoadPlugin("C:\MPEG\Avisynth\Plugins\MPEG2DEC.dll")
LoadPlugin("C:\MPEG\Avisynth\Plugins\Decomb.dll")
mpeg2source("C:\Temp\Video\Film_NTSC_23976.d2v")
Telecide(post=false)
LanczosResize(720,576)
AssumeFPS(25)
ResampleAudio(44100)
---------------------------

[auenf]

if the source was not originally 24fps, then you can't IVTC (well it will end up crap) and you'll have to use field based conversion.

check this thread for scripts for back and forth: http://forum.doom9.org/showthread.php?s=&threadid=45459&highlight=pal+to+interlace

Enf...

[Xesdeeni]

I've been working on a standards conversion page (http://www.geocities.com/xesdeeni2001/StandardsConversion) and I'm always open to suggestions. I'm working on an update, but I'm in the middle of a move, so I doubt it will be too soon. Some goals I have:

1. Add info on how to analyze a video to see if the source is film or video.
2. Add alternatives for PAL film to NTSC: 25p to 23.976p with audio conversion or 25p to 29.97i without audio conversion.
3. Update to use AVISynth 2.5.x
4. Update to use CCE for MPEG-2 (TMPGEnc for MPEG-1)
5... Add all the missing conversions..... :)

Xesdeeni