Samsung provides an Instant slow-mo function that can decelerate your videos.
Samsung Galaxy devices are equipped with a few pre-installed “duplicate” applications. For instance, the Samsung Galaxy S25 includes both Google Photos and Samsung Gallery as pre-loaded photo and video gallery options.
While it’s generally advantageous to utilize Google Photos, dismissing Samsung Gallery too quickly isn’t wise. Samsung’s gallery application presents several thrilling photo and video editing capabilities that are not available in Google Photos, which is reason enough to retain it.
In particular, Samsung Gallery simplifies the process of adjusting a video’s speed within your camera roll using the Instant slow-mo feature. It enables you to add a slow-motion effect to your videos by long-pressing the screen during playback, and there are additional customization options within the editor. Here’s how I utilize Instant slow-mo to rework my smartphone videos, and how you can do the same.
What is Samsung’s Instant slow-mo?
Instant slow-mo is a functionality within the Samsung Gallery app that allows users to modify the playback speed of their videos. The basic version applies a slow-motion effect to the video during playback when a user taps and holds down the screen. The more sophisticated option in the video editor grants the ability to select from four playback speeds — 1/4x, 1/2x, 1x, and 2x — which can be assigned to specific segments of your video.
Opening the editor presents a detailed timeline with handles that allow you to lengthen or shorten the section of the video to which the slow-mo effects will apply. This permits different segments of the same video to replay at various speeds, enhancing the cinematic quality. Once you finish customizing the video, you can either save it directly, overwriting the original, or create a copy.
In any case, the video can always be reverted to its initial state, so there’s no danger of errors in the Instant slow-mo editor.
How to use Instant slow-mo in the video player
There are two methods to utilize Instant slow-mo in the Samsung Gallery app, the first being a simple long-press on a video while it plays. This gives a preview of how the video will appear slowed down. When you lift your finger, a download button appears, allowing you to save the Instant slow-mo clip to your camera roll. Here’s precisely how to accomplish this:
1. Launch the Samsung Gallery app and select a video.
2. Tap the Play button to begin the video playback.
3. Press and hold any section of the video to activate Instant slow-mo.
4. Release your finger to deactivate the Instant slow-mo feature, revealing a download button.
5. Tap the download button to preserve the Instant slow-mo clip.
After this, the slowed-down version of your video will save as an alternate video in your Samsung Gallery app. The original video will still be accessible, and you can create more Instant slow-mo clips if desired.
How to use Instant slow-mo in the video editor
An advanced version of the Instant slow-mo feature is found in the Samsung Gallery video editor. This iteration allows you to manually specify which parts of the video you’d like to speed up or slow down. You can blend slow-mo segments with normal-speed footage for dramatic flair. Here’s how to use it:
1. Open the Samsung Gallery app and select a video.
2. Click the Edit icon on the toolbar.
3. Tap the Speed icon and select one of the four speed options (1/3, 1/2, 1x, 2).
4. Adjust the handles on the video timeline to set how long the speed alterations will affect the video.
5. Select either Save or Save copy to finalize.
With this tool, you can precisely determine how long Instant slow-mo will be applied to your video while selecting the specific speed. The same setting can be used to create double-speed effects, producing a completely different result. As multiple speeds can coexist in the same video, there are numerous ways to remix your footage using Instant slow-mo within the Samsung Gallery app.
Samsung’s Gallery app can enhance or reduce the speed of your videos.
I primarily use Google Photos as my main gallery app across all Android phones, but it’s beneficial to keep Samsung’s Gallery app for its unique features. Aside from the Instant slow-mo function, Samsung’s Object Eraser and Audio Eraser are two additional handy tools that come to mind. However, the feature I utilize the most is the Create GIF option. It can convert any video from your Samsung Gallery into a GIF with a single button press, making it invaluable for sharing online.
No matter how you deploy tools like Instant slow-mo, it’s essential to recognize that your Samsung Galaxy S25 offers exclusive photo and video editing tools within the Samsung Gallery app. Many users switch entirely to Google Photos and overlook the convenient features uniquely available in Samsung Gallery. Personally, I appreciate how straightforward it is to view and save slowed-down