PAL to NTSC

[sockmypuppet]

Hi, I have a PAL DiVx movie that I would like to convert to NTSC for recording on my digital camcorder. Is it possible to do this using, say Adobe After Effects? The playback is choppy if I just change the framerate to 29.97 form 25 fps(which is expected of course). I would like to know if there's a way to have nice, fluid playback in NTSC at 30 fps. Oh and to make matters more complicated, it's a PAL video taping of a film. So a 25 fps video taping of 24 a fps movie that I want to convert to 30 fps.

[anaboland]

Hi,

You could try this i've used it to change divx NTSC to PAL mpeg2
please note that i've never done Pal to Ntsc as i live in UK and normally
have to do Ntsc to Pal, so heres a bit of reverse engineering.

1-first take the original PAL Divx and using Virtualdub extract the audio
and video to seperate files.

2- use a program called AVIFRATE and change the frame rate of the .avi video from 25fps to 23.976fps.

3- then using TMPGEnc encode the new 23.976fps .avi into mpeg using the
3:2 pulldown option which will give u 29.97 frames when played back.

what you will find is the that running time of the new video will be slightly longer than the original 25fps video ,due to running only 23.976fps instead of 25fps.

Using 23.976fps and 3:2 pulldown should minimize the difference in total length of the video, changing straight to 29.970fps would mean the new video would be a lot shorter than the original.

Next you will need to use COOLEDIT2000 to alter the length of the audio to match.

use the Time/Pitch option and set precision to high and stretching mode to
time stretch.(long wait p.s CoolEdit always seems to give the impression it has frozen at the end of the re-size but it will finish eventually)

then multiplex the video and audio together and you should have smooth
video and audio, but i'm not sure now the sync will be because i dont know if the 3:2 pulldown playback will lead to any problems.(dont have this sort of stuff with PAL)

hope this gives you some ideas
best of luck
andy

[sockmypuppet]

Thanks for the tip. Do you think it's possible to do the same thing with adobe after effects?

[El Torro]

Probably yes... But i don't use that proggie... but my guess is yes 8)