120 fps reduce to 60?

[audi321]

Hi all, I have a load of videos shot on a GoPro some years back and I chose (for some reason) to shoot them in 120fps.

They seem to playback fine on my Macbook Pro retina screen, but the minute I try and airplay them to the TV they are really choppy.

Is there any video playback software on the Mac which I can choose to reduce the fps to 60 for Airplaying? Or does anyone know a better solution?

Thanks in advance.

[Mr Pointy]

I think Handbrake is the usual suggestion for Mac video processing:

https://handbrake.fr/

[StevieBee]

Handbrake compresses the file but doesn't - I think - alter the frame rate.

iMovie is your friend.

Open a new project and set the frame rate of the project to what you want then just drop in the clips. Edit if you wish then export.

24fps will give you a nice filmic look. 50fps will give you something more akin to live TV.

At 120fps, you'll be able to get some really nice, fluid slo-mos that you can also do in iMovie.

HTH

Edited by StevieBee on Wednesday 5th May 07:05

[Mr Pointy]

Handbrake is a general transcoder (& much else) not just a compressor:

https://handbrake.fr/docs/en/1.3.0/technical/frame...

[audi321]

Thanks guys I’ll give handbrake a try in the first instance.

Ideally I don’t want to change the fps permanently as it plays lovely and smooth on the MBP screen but just when I’m airplaying to the TV as it’s really choppy.

I’ll make copies of the files and then run them through handbrake (I take it there’s no automation which can do it in batches?) I have over 100 videos from a skiing holiday around 4 years ago so to do each one individually is going to take a while!

Thanks again for your advice.

[HappyMidget]

My friend has a public repo for a utility that can do auto encoding on new files in a folder, not used it and not sure how easy it is to setup but uses ffmpeg to auto encode new downloads to a specific format that may help https://github.com/CundyTech/mkvMediaConverter

There are also ways to auto transcode using handbrake that I have used in the past but cannot currently remember the links to the tutorials to do it. a bit of web searching should find it though.

[Mr Pointy]

Have a look at the Queue functionality for batch working:

https://handbrake.fr/docs/en/1.3.0/advanced/queue....

Searching for "Handbrake Tutorial" on YT comes up with a shedload of hits for you to work through.

[The_Jackal]

I would imagine it is choppy because Airplay doesnt handle the codec very well.
Cant you just convert them to mp4 60fps with the GoPro app? Then practically anything will play or cast them.

[audi321]

The_Jackal said:

I would imagine it is choppy because Airplay doesnt handle the codec very well.
Cant you just convert them to mp4 60fps with the GoPro app? Then practically anything will play or cast them.

I avoid the GoPro app as much as possible. I just can’t get on with it.

Handbrake seems to be working fine, just need to sort out the automation and I’m good. Thanks again all.

[S47]

I had a similar problem with 8mm cine which was 30fps when I needed 25fps - I used freemake which could do this - which use to be FREE to download but isn't anymore