PAL to NTSC Dgpulldown problem

[laks_14]

i'ts been a while since i have been triyng to convert a movie framerate from 25fps to 23.976 using pulldown with bad results, i encode the movie to a 480x480SVCD 25fps using cce 2.70.02 , the movie duration is 1hr 43min, after applying dgpulldown 25 --> 29.976 conversion the movie shortens to 1hr 25min playing faster!, i've done this kind of conversion with a lot of pal material and this is the only case when it goes wrong, i need help with this.

[darkskies]

Not sure if this will help but instead of 25fps -->29.97 select custom and do 25-->23.976 with 3:2 pulldown. Exactly what problems are you having sync issues or playback jerkyness?

[manono]

Hi-

i'ts been a while since i have been triyng to convert a movie framerate from 25fps to 23.976 using pulldown...

That makes no sense at all. You're not changing the framerate or the length of the video. You're keeping it at 25fps.

the movie duration is 1hr 43min, after applying dgpulldown 25 --> 29.976 conversion the movie shortens to 1hr 25min playing faster!...

How do you know the length has changed? Most players won't give you the correct length. I assume you're using the original audio, correct? And is the audio still in synch after running DGPulldown 25->29.97 and muxing? If so, then the length is still the same. All DGPulldown is doing is applying the proper flagging so your original 25fps movie outputs at 29.97fps for NTSC. It does this by making your DVD player output duplicate fields, but keeps the base framerate at 25fps. The film is still the same length. The audio should still be in synch if you do it right.

[laks_14]

i'm having sync issues, the audio is the same. the video doesn't seem to be "flagged" correctly, the duration of teh video changes after i apply pulldown.

[manono]

Hi-

No, DGPulldown doesn't change the playing time of the video. Whatever length the .mpv is (assuming it's 25fps), after applying DGPulldown with 25->29.97, the .m2v length is still the same. I see 2 possible ways to go wrong. One might be that CCE changed it for you if you weren't careful about your settings. However, I've done this dozens of times with CCE with no problems. The other and more likely reason might be that your authoring app sees the 720x480 video as NTSC and assumes it's 23.976fps pulled down to 29.97fps and changes the length for you. I don't know if this is mere coincidence or not, but:

(25/29.97) x 103 = 85

Where 103=your original 1 hr 43 min video, and 85=the 1 hr 25 min final video. You didn't say what authoring app you were using, but I might suggest trying MuxMan which has never given me any problems along those lines.

If worse comes to worst, you can always slow the video to 23.976fps from the original 25fps, and then run regular 23.976->29.97fps pulldown. That will, however, also require slowing the audio, something that DGPulldown was designed to avoid.