29.97fps Progressive?

[simple_simon]

I have a commercial DVD that appears to be completely progressive encoded at 29.97fps. Since the 3:2 pulldown pattern isn't there I can't detelecine back to 23.976 but since it is film shouldn't it be 24fps? Or are there some films out there that are filmed at 30fps?

edit: It's an American film too so it shouldn't be a PAL to NTSC conversion.

[Biggiesized]

What does it LOOK like? Does it have the normal film judder or does it look more like web video? That can help us determine the cadence.

[nevcairiel]

Some content originally produced for TV are filmed with NTSC cameras which produce native 60i/30p, without telecine. Maybe thats the case for your disc there.

But like mentioned, does it actually look smooth, or do you see a judder?

[Blue_MiSfit]

Film is never 30fps. Your content is either pure interlaced (native 60i) or deinterlaced (30p stored in a 60i wrapper).

Post a sample if you want a definitive answer.

[simple_simon]

ok i figured out that those two movies that I thought were 30fps are actually hard-telecined. mplayer wasn't showing me the interlacing pattern for some reason but when I looked at them in vdub I could see the 3:2 pattern. But I've also run across too other interlacing patterns that don't follow the 3:2 pattern and I don't know how to handle them, whether ivtc or straight deinterlace or at what fps. One is 1 single interlaced frame out of every five instead of two and the other is 1 progressive frame out of every six frames with the rest being interlaced. Anybody ever run into either of those situations or know how to deal with it?

[Blue_MiSfit]

So, you're seeing 4:1 and 1:5 cadence patterns. Interesting. The latter may be a PAL -> NTSC kind of thing, but I'm not really sure. Hopefully someone here will have a better idea :)

Derek