ffmpegx recognizes 29.7 fps vob as 23.7 fps

[scavenga]

I was about to convert UHF (funniest flick ever, yeah?) for viewing on my PSP, when I discovered that ffmpegx thinks the video is 23.976 fps, while both mplayer and quicktime clearly state that it's standard NTSC at 29.7 fps - even ffmpegx states that the video is 29.7 when I hit the info button.

I ripped the vob with MTR.

Anyone know why this happens and how to fix it? If I convert it to MP4 PAL or NTSC, the video will get that annoying framelag every second...

[TylerL]

Notice in the left column that it lists the .vob as 23.976 w/3:2
3:2 pulldown is used to reverse the Telecine - when a film source (24fps) is converted to NTSC (30fps/60i).

UHF is a 24fps (or in this case, 23.976) movie, and you should compress it as such. It would look smoother than if you compressed it as 29.97fps, and have 20% less frames (which are nothing more than repeats of other frames).

[scavenga]

Yes, but the problem is also such that the PSP settings in ffmpegx only allows you to choose between 25 or 29.7 fps...


Edit: Okay, thanks! Found the 23.9 option now, it didn't automatically appear on the dropdown menu, had to tug it up and down a few times before it appeared (think I gotta reinstall this program, it behaves strangely...)

Thanks a lot for your help.