Make any video smoother on iPhone
Vltra adds frames while it plays. No export, no upload.
Get Vltra on the App Store- Plays 24 and 30 fps clips smoother
- Works on your own files, on the phone
- Nothing leaves your iPhone
24 fps vs 60 fps, made on iPhone by Vltra
Video: Sintel | Blender Foundation | CC BY 3.0
See the difference
Same scene, same phone. Left: the original at 24 fps. Right: Vltra playing it smoother.
How it works
You open a video from your phone and press play. Vltra creates the extra frames in real time while the video plays. Your file is not changed and nothing is sent anywhere.
Good to know
Smoothing needs a recent iOS version and a recent iPhone. Today it handles standard dynamic range video up to 1080p. The higher frame rates show on screens that can show them: a 60 Hz screen shows up to 60 fps, a 120 Hz screen shows more.
Questions
What does it do?
It plays video smoother by adding frames while you watch, so 24 and 30 fps clips look closer to 60.
Do I need to export or wait?
No. The smoothing happens during playback.
Is my video uploaded?
No. Playback and smoothing happen on your iPhone.
Is it free?
Yes. Playing and smoothing cost nothing. Vltra Plus is optional and adds For You, a page built from your own library.
iPhone and App Store are trademarks of Apple Inc. LCTR is not affiliated with Apple. Sintel is a Blender Foundation open movie, licensed CC BY 3.0.
Why 24 and 30 fps can look choppy
Many movies are shot at 24 frames per second and many phone clips at 30. On a screen that refreshes 60 times a second, those frames are repeated unevenly, and a pan across a scene can look like it stutters. Adding frames in between makes the motion look closer to 60 fps.
How to try it when it is out
- Open a video that is already on your iPhone.
- Press play. The extra frames are made while it plays.
- Compare with the original by watching the same scene again with smoothing off.
What it will not do
- It does not create a new 60 fps file. There is nothing to export, and your original stays as it was.
- It does not make a 60 Hz screen show more than 60 fps. A 120 Hz screen can show more.
- It does not handle HDR yet. Today it works with standard dynamic range video up to 1080p, on a recent iPhone and a recent iOS version.
More questions
Does it work on videos from other apps or the web?
It plays video files from your phone. The page lists nothing beyond that, so do not expect it to smooth a stream.
Will it drain the battery?
We have not measured battery use, so we make no claim about it.
Is the demo video edited?
The comparison uses one scene on one phone: the original at 24 fps on the left, smoothed playback on the right. The film is Sintel, credited under the video.