25p .avi files to NTSC dvd

[waefwaeefwaefw]

Ok so im following this guide http://www.frontalweb.com.ar/foro/fw-tutoriales/9095-tutorial-kdvd-con-tmpgenc-cce.html (Spanish) and all great converting and authoring 23.976 .avi files, but i have some 25 fps .avi files and i need them to convert to NTSC (I know there are multizone dvd players but a friend has some chinese crap so probably it cant play PAL dvds), im frameserving with avisynth to CCE SP2 and this is the script:

DirectShowSource("C:\25p file.avi", fps=23.976, convertfps=true, Audio=False)
BicubicResize(648, 432, 0, 0.5)
AddBorders(36, 24, 36, 24)

But using this conversion: fps=23.976, convertfps=true, makes my mpeg file jumpy like every 5 seconds, so whats the right form of converting 25 -> 23.976 without changing the duration (because then ill need to change the duration of the audio file and would be extra work), so please if someone knows what to do help me.

[Soopafresh]

You don't have to do that. Just encode your video to 720x480 25fps, then run DGpulldown 25fps->29.97fps on the video portion of the file. Voila.

[manono]

I agree. And if you really want to slow it to 23.976fps then:

AVISource("C:\25p file.avi",False)
BicubicResize(648, 432, 0, 0.5)
AddBorders(36, 24, 36, 24)
AssumeFPS(23.976)
ConvertToYUY2()#for CCE

Your ConvertFPS removes a frame every second and makes it play jerky. AssumeFPS slows it down (changes the length) but keeps the same frame count. Of course, if you do it this way you'll also have to slow the audio. Doing it Soopafresh's way allows you to keep the audio the same length.

You can't have it both ways, though, keeping it the same length and have it play at 23.976fps. Unless you want to ruin it by blending the hell out of it. Or unless you want to wait until Christmas for it to finish by using MVTools to create completely new frames.

[waefwaeefwaefw]

Ohh ok thank u both for your answers, im gonna try it soopafresh way because is the easiest (no lenght change, less work), im kinda newbie on this, i believed that i needed to convert all avi files to 23.97 and then convert it in CCE with 3:2 pulldown to have a 29.97 mpeg, so just for the record 23.97->29.97 pulldown 3:2 in CCE (DGpulldown also does this¿?), and 25->29.97 pulldown with DGpulldown, 29.97->29.97 directly encode.

If i do the 23.97->29.97 pulldown, it doesnt matter if i do it in CCE or DGpulldown¿?. <-- Some clarification needed. After all, what i have read, pulldown is just some flags that are added to the mpeg for the dvd player to read and make the framerate conversion. Ok thank u all again. Bye.

[RickA]

Greets,

Use Soopa's suggested method. Also described here http://neuron2.net/dgpulldown/dgpulldown.html . You can use CCE or HCenc (my pref.) for the encoding. Resize the vid to NTSC resolutions (720x480) and encode as normal.

Turn off any options in the encoder (or your authoring software) that suggest keeping DVD standards. Because it can be fooled by the PAL content/speeds at NTSC resolutions and try to 'fix' it for you - which you do not want.

Do not use 3:2 pulldown in CCE. Use the DGPulldown program on the encoded, demuxed video before authoring. It does a much better job of it. You do not need to convert the 25fps to 23.97fps for this to work. Just in case your authoring software might have probs with mixed speed content you may wish to put the 24fps and 25fps stuff on seperate dvd's.

Cheers,
Rick

[waefwaeefwaefw]

Thanks RickA, then ill do the pulldowns in DGpulldown, thank u all for the help, this is a great forum. Bye.

[johns0]

I use this method to convert pal to ntsc avi http://www.johnisme.shawbiz.ca/avi.shtml because most times avi pal is sped up ntsc.I then encode the avi without having to use a special script which sometimes causes those jerky encodes.

[waefwaeefwaefw]

Ok i ran into some problem but i fixed it, the dgpulldowned file when i loaded into dvd architect showed the wrong runtime, instead of 41:31 (original video and the audio runtime) it showed 43:13, when previewing it looked out of sync, but i founded this post https://www.videohelp.com/forum/archive/dgpulldown-help-run-times-don-t-match-up-t307608.html, tried to authored to DVD, perfect sync xD. Thank u all, this is a great pal to ntsc conversion method, i prefer it to the old one, is wayyyyy less work (in dvd playback u have ur slowdown video and ur audio is in sync, w/o having to convert the audio previously), and is fast also.