Save Videos in 120 FPS Using UpRes

Want to create smooth, cinematic slow-motion videos without being locked into your iPhone’s default “Slo-Mo” mode? With UpRes, you can now convert your videos to 120 frames per second (fps) and choose exactly which parts you want to slow down — giving you full creative control.

This guide will show you how to save videos in 120fps and add slow motion to any section of your video directly from your iPhone.

Before You Begin

Make sure you meet these requirements before getting started:

• iPhone 13 or later.   
• iOS 26 or later. 
• The latest version of UpRes (v1.13)
  

How to Save Videos in 120 FPS

Step 1: Open UpRes

Launch the UpRes app on your iPhone and select Upscale Video from the main menu.

Step 2: Load Your Video

Choose the video you want to enhance. You can either:

• Upscale to 4K, or 
• Select Change Frame Rate Only if you only want to modify the frame rate.
  

Step 3: Select 120 FPS

From the frame rate options, tap 120fps and then Save.
UpRes will process your video locally on your device — no internet required.

Step 4: Open the Edited Video in Photos

Once the conversion is complete, open your Camera Roll and locate the new 120fps version of your video.

How to Add Slow Motion to Any Part of Your Video

Step 5: Edit the Video

• Tap Edit in the bottom-right corner.
  

• Move the timeline cursor to the section of the video you’d like to slow down. 

• Tap Done to save your changes.
  

Why 120 FPS Matters

Recording or converting to 120fps gives you flexibility to slow down footage while keeping every detail crisp and fluid. Unlike iPhone’s built-in Slo-Mo mode, UpRes lets you choose after recording which parts of your video get the slow-motion effect.

Pro Tip: Combine 4K + 120 FPS

If you want your content to look stunning on any screen, you can upscale your video to 4K and 120fps at the same time using UpRes. This combination is perfect for creators who want the highest-quality playback possible.

Final Thoughts

With UpRes, turning your regular videos into cinematic slow-motion clips is quick and easy. Whether you’re editing action footage, travel clips, or creative projects, having control over when and where to add slow motion gives you total creative freedom.