Tools to determine mpg2 stream was 3:2 pulldown ?

[pipieye]

I'm looking for a tool to be able to determine if an mpg2 stream had the 3:2 pulldown on it.

Currently, I have to demux the file, then use bbmpg to remux and bbmpg would tell me 3:2 pulldown detected or no pulldown detected. But this process takes a looong time.

I've been searching for weeks with no luck. Any help appreciated.

[adam]

The easiest way to determine whether a 29.97fps mpg is either actually 29.97fps, or stored as 23.976fps w/ pulldown flags, is to use dvd2avi.

Load the mpg and hit F5 to preview. If dvd2avi reports that it is FILM in the statistics, then it is stored as 23.976fps and has the 3:2 pulldown flags in the stream. If the statistics list it as NTSC than there are no pulldown flags and it has been encoded at 29.97fps.

[AngusMacGyver]

The method that Adam refered to is to determine if a video was telecined at play moment. Let me clarify. You can telecine by adding extra fields or simply by adding flags to player do the telecine at play moment.

Most comercial DVDs are telecined by adding flags, and you can see by using method mentioned by Adam.
If you want to be sure, open video in Vdub, select a movement scene and pay attention if you have a sequence of 2 interlaced and 3 non-interlaced frames. If so, you have a 3:2 telecined video. If your video only have interlaced or non-interlaced frames, it wasn't telecined.

More information at http://www.lukesvideo.com/telecining.html.

[pipieye]

Thanks for pointing me to dvd2avi.

I would never have thought of using this as a way to find this info in a million years.

You guys are a genius!!!!

[Vejita-sama]

It's actually a 2:3 pulldown (aside). Anyway if you have a program that allows you to advance frame by frame (eg. VDub) you can also tell if your source has been telecided because it will have two interlaced frames, 3 progressive frames, 2 interlaced frames, 3 progressive frames, etc.

But DVD2AVI is easier Esp for DVD ripped source.