How can I preserve Slow motion when backing up pictures to windows?

[KTK1990]

I backup my pictures to my computer by plugging my phone in and dragging them over to a folder in My Pictures.

When I tried to play some slow motion videos recorded on my 6 plus in all my video playing apps they played back at full speed. How can I make them play back and are saved in their original 240 FPS?

I am using Windows 8, but back them up to a external hard drive that may get plugged into different OS's and may upgrade my laptop to Windows 10 sometime after release.

 

[Eau Rouge]

You can reduce playback speed in your video application to preserve the slow motion. Also, if you airdrop the video to another iOS device, then transfer to Windows, playback will be just like it is natively.

 

[UKapple73]

I'm also interested in an answer to this
But the answer above doesn't make any sense. How does airdropping it suddenly make windows play it at the right speed?
The video is 240fps, the software playing it back sets wether it slow motion or not?

 

[swordfish5736]

I'm also interested in an answer to this
But the answer above doesn't make any sense. How does airdropping it suddenly make windows play it at the right speed?
The video is 240fps, the software playing it back sets wether it slow motion or not?

I'm not sure why airdropping it would cause this. Maybe it is in the way the iOS device exports the video.
Either way, Most programs will play video at 30fps(29.97) regardless of if there are 30, 60, 120, or 10,000 fps. Its up to the program you use to set the playback speed. to see a 120fps video at 120fps set the playback speed to 0.25 or 25%.

 

[UKapple73]

For 240fps video, the Apple software plays it back at 1/8th speed ie it shows 30 frames rather than 240 frames in one second, hence it is slowed down 8 times....correct?

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iMovie can also "encode" a video to include the slow mo portions and then export the encoded movie to windows

 

[KTK1990]

I assume the reason why AirDrop would work is that iOS is seeing that as an export and is creating a "final version" ready for show.

I think the version stored on the phone's memory is in "Raw" format.

 

[zorinlynx]

When I transfer slow-mo videos to my computer, the video is accompanied by a "side car" file containing metadata. I assume this is what tells Quicktime Player to slow down the video at the appropriate time. If I delete the sidecar, the file plays at "normal speed".

The video file itself has metadata saying it is at 240fps. The computer will play it at 240fps, thus normal speed. Without that "sidecar" you need software to slow it down, or you need to edit the metadata, which you can do with certain tools like ffmpeg.