3:2 pulldown ... does it really work?

[bobc292001]

I've had problems in the past using 3:2 pulldown on 23.9FPS movies (jerky playback), so I started converting my 23.9FPS movies to 25FPS (timestretching audio with Cooledit) and then converting (with TMPGenc) & authoring as PAL. Works a treat and the movies play really smooth.
But ... I now have a number of AVI movies with AC3 audio & I want to kept the 5.1 audio, which I can't do if I timestrech.

So ... I have tried using 3:2 pulldown again. This time I used the DOS program Pulldown.exe (figuring it would work better than TMPGenc's own 3:2 pulldown).
However .... my finished DVD is just the same as before. It seems to play fine for about 10-15 seconds then it jerks as though frames are missing. It is always worse on long panning scenes.

Can someone finally confirm for me -

1) Are all 3:2 pulldown movies like this?
2) Or am I missing something really obvious?
3) Or could I have a rubbish DVD player?
4) Or is it something else?

[SLK001]

1) No, pulldown movies are very smooth playing.
2) Probably, but I can't tell exactly what.
3) If a commercial DVD will play (NTSC), then your player is not rubbish, but instead, this reinforces the second point above.
4) Quite possibly you are not performing pulldown correctly, or are trying to add something that is messing up your video.

[salfter]

I've had problems in the past using 3:2 pulldown on 23.9FPS movies (jerky playback), so I started converting my 23.9FPS movies to 25FPS (timestretching audio with Cooledit) and then converting (with TMPGenc) & authoring as PAL. Works a treat and the movies play really smooth.

I've done a few DVDs so far with video ripped from my TiVo. The source video is edited with Avisynth to upsample from 480x480 to 720x480 and do inverse 3:2 pulldown. TMPGEnc then encodes from the Avisynth script to film-rate NTSC. The key settings are these:

video
framerate: 23.976
encode mode: 3:2 pulldown when playback

advanced
video source type: non-interlace (progressive)
inverse telecine: unchecked
3:2 pulldown: unchecked

Don't use TMPGEnc's inverse 3:2 pulldown filter...the InverseTelecine plugin for Avisynth 2.0 works better.

After the encoding is done, import the .m2v and .ac3 files into your authoring program (I've been using TMPGEnc DVD Author with decent results, though I'd like more menu flexibility) and you're done.

[chazzie]

But ... I now have a number of AVI movies with AC3 audio & I want to kept the 5.1 audio, which I can't do if I timestrech.

Yes, you can time stretch it. Just decode the AC3 file into 6 different WAVs (using BeSweet) and open in an appropriate sound editor that supports time stretching. You will ofcourse have to perform the time stretch on all 6 files (one per channel), but it works like a charm when I converted the Dolby Digital trailers. After time stretching (and saving the WAVs) you must ofcourse re-encode it to AC3

Chazzie

[disturbed1]

23.9FPS movies to 25FPS

authoring as PAL. Works a treat and the movies play really smooth.

Your doing a format conversion, NTSC Film to PAL. Pulldown is of no use to you.

The way you did it by setting the encode section to PAL (add/deletes frames to keep original time), then stretching the audio, is close enough.