Remove dupe frames and output constant frame rate

[TenementLady]

I have a screen recording that appears to be 60fps variable frame rate. I need to convert to a constant 24fps and remove the duplicate frames that appear randomly throughout. I also need to retain the same running time. I've tried various ffmpeg options, but so far, no luck.

Any suggestions?

[hello_hello]

By definition a video can't have a set frame rate such as 60fps and also be variable, unless 60fps is the peak or average frame rate. It might be an idea to upload a sample of it. You can attach a sample to a post here. I doubt anyone will be able to tell you how to convert it to 24fps, or even if it's possible, without looking at it.

[TenementLady]

Thanks for your reply, and my apologies, here's the frame rate info:

Frame rate mode: Variable
Frame rate: 59.874 FPS
Minimum frame rate: 15.000 FPS
Maximum frame rate: 60.000 FPS

[smrpix]

As hello_hello said, you need to post a sample.

If it's a screen recording of YouTube Video, gameplay, a DVD, a camtasia tutorial or a zoom recording -- each needs to be handled differently depending on the actual characteristics of the source.

[TenementLady]

The recording was done on an iMac 5K with Quicktime. What would be the best way of exporting a sample without re-encoding etc?

[hello_hello]

MKVToolNixGUI will open lots of formats and remuxe as MKV, and it has options for splitting the output. Or there's TSMuxerGUI for outputting TS or M2TS.
There's tools for remuxing files as MP4s but I almost never do that myself as working with MP4s could probably be classified as a form of torture.
I'm pretty sure AVIDemux has splitting options. I couldn't tell you if all of those programs come in a Mac flavor. You''ll have to check.

ffmpeg should copy the video and split the output when remuxing. If you're not into using it via the command line, there's probably a Mac flavored GUI or two for it.
I checked AviDemux just to see, and it has a Mac version.

You can't export from Quicktime without re-encoding? I have no idea what it'll do as I don't use it.

[Cornucopia]

Last I checked, QuickTime has no means to properly convert VFR <--> CFR. Best option on a Mac is probably ffmpeg.


Scott

[TenementLady]

Last I checked, QuickTime has no means to properly convert VFR <--> CFR. Best option on a Mac is probably ffmpeg.


Scott

I tried various options in ffmpeg, but they either changed the running time or left dupe frames in place.

[davexnet]

Last I checked, QuickTime has no means to properly convert VFR <--> CFR. Best option on a Mac is probably ffmpeg.


Scott

I tried various options in ffmpeg, but they either changed the running time or left dupe frames in place.

Post a sample if you want somebody to help you

[TenementLady]

Here's a sample clip (via Avidemux). Thanks