How best to turn a progressive NTSC DVD source to xvid

[TheRage]

I have a progressive NTSC DVD source that seems to be a conversion from PAL, think its a Thai DVD or something. The frames go 1,2,3,4,5,5,6,7,8,9,10,10 seemingly throughout the whole video steam.
I suspect something along the lines of converting it back to PAL then/during encoding? Though my encoding experience consists of dealing only with PAL DVDs, GK and the wonderful Doom9 guide :)
So I guess I'm asking where I would start on this?

[manono]

Hi-

It sounds like that crappy Ong Bak DVD I saw recently where every fifth frame was repeated, making certain kinds of movement play jerky. If you can use AviSynth script files to make the AVI, then just load the Decomb Plugin, and add Decimate(6) to your script, and you'll be all set. The result will be an AVI at 24.975fps, with no need to adjust the audio. Yes, it's a PAL to NTSC conversion, done very simply and badly, but at least it wasn't blended, so it's easy to correct for either AVI or DVD.

[TheRage]

Thanks for the reply & yeah thats the one :) Will do exactly that, though will the fact that its 24.975fps and not 25 cause any problems for a standalone player or anything? Or better yet is it possible to speed up the fps that little bit?

[manono]

Hi-

...will the fact that its 24.975fps and not 25 cause any problems for a standalone player or anything?

None that I know of. I play AVIs with strange framerates all the time on mine (silent film buff) with no problems.

...is it possible to speed up the fps that little bit?

Sure, just add AssumeFPS(25) at the bottom of your AviSynth script. Doing that will then require adjusting the audio length, also easily done. In the BeSweet GUI check the box to "Change Frame Rate from" 24975 to 25000.

[TheRage]

I did what you said manono and have an avi file which looks smooth, doesnt seem to have any dupe frames and is 25fps, thx for the advice :)

Tried using belight to change the ac3 to mp3 with a frame rate change of 24975 to 25000 but all didnt go so well the audio once muxed was too slow like it hadn't been sped up. I read about belight/besweet having issues with non standard frame rates so either that or me failing to do something messed it up. I tried headac3he but it doesn't seem to have a bit to adjust the framerate? Does anyone perhaps know another way to do this?

EDIT: Nevermind I resolved this by encoding to wav then doing the adjustments.