Change frame rate in Mac OS X

[SnakeEyes]

I have a 720p mpeg 2 video at 59.96fps and I want to reduce it to 30fps the best way possible. I don't want it to just drop frames, I want to retain smoothness as much as possible. That's the only thing I want to do to the video at this stage. Can someone tell me how I'd do that in Mac OS X?

[nm]

That requires a good motion blur filter. I guess your best hope is running AviSynth in Wine (use avs2yuv to pipe the video back to native tools). After doing some reading at the Avisynth forum and lots of testing, you may be able to achieve decent results.

There are probably newer threads around, but take a look at these for some keywords:
http://forum.doom9.org/showthread.php?t=110093
http://forum.doom9.org/showthread.php?t=105015

Edit: One more: http://forum.doom9.org/showthread.php?t=144618

[mrbass]

avidemux should do the trick for that. I haven't reduced it but have doubled or tripled the speed of some home video with it.

[nm]

Avidemux will simply drop or duplicate frames though. I'd do that, but SnakeEyes wanted to add motion smoothness.

I forgot to ask about the source though. Is it really 60p (like a video camera capture) or 24p broadcast with duplicate frames (a movie or series shown on TV)? If it's the latter, you'll need to get rid of the duplicate frames first. Then keep the 24p video if your player handles it, or convert to 30p with MVTools.