> On Thursday, January 15, 2015 7:30 PM, Elliott Balsley > <elliottbals...@gmail.com> wrote:
> > After a long break from this issue, I have a new problem. For > example, I want to take a 24fps video and make it play slow-mo at > 12fps. The input option -r is dropping frames, rather than slowing > down the playback speed. I don't have my main computer right now, > which uses the latest git master; I'm just using my laptop which uses > a macports build, so maybe that's the reason? Or am I using this > command wrong? > > $ ffmpeg -r 24 -i /temp/leader.mp4 -r 12 test.mov You are using the command wrong. That says "use this input as if it were 24fps. Do stuff with that, and then encode the resulting video as 12fps, discarding/dupping frames if needed." Two options that should work: ffmpeg -r 12 -i /temp/leader.mp4 test.mov or ffmpeg -i /temp/leader.mp4 -vf setpts=2.0*PTS test.mov -Nick _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
