Flowframes Uses AI Frame Interpolation to Smooth Low-FPS Video on Windows

Flowframes is a free Windows tool that uses AI-based frame interpolation to make low-frame-rate videos look smoother and more modern. It works by generating extra frames between existing ones, turning choppy 24 or 30 FPS footage into something far more watchable. It is especially handy for old gameplay captures, animation clips, or testing motion interpolation without firing up a full-blown video editor.

What Flowframes Does

Flowframes takes an existing video file, analyzes motion between frames using AI models, and then inserts new frames where they make sense in the flow. The end result is smoother playback at 60 FPS, 120 FPS, or whatever target you choose. You drop in a video, pick an interpolation model, set your output options, and let it run. The program will now do the work for you.

It supports multiple well-known AI interpolation methods, including RIFE-based models, which tend to do a solid job with both real-world footage and gameplay. We tested videos of old 30 FPS clips that looked great back in the day, but really rough on modern high-refresh monitors, and the difference was definitely noticeable.

Why You Might Want It

Low-FPS video stands out more than ever on today’s displays. Flowframes helps smooth that out without requiring any video editing experience or timeline work.

It is fast, relatively lightweight for what it does, and easy enough that you can experiment quickly without reading documentation for an hour. It also works well for stylized content like animation, where smoother motion can make a bigger difference than raw resolution. However, don't let the small initial download fool you. The installer will grab the rest of the app and models it needs to start, so that the initial install is closer to 7 GB by the time you are done. More if you want different models downloaded. The good news is that when we installed this on an external SSD, it worked fine.

If you have older gameplay recordings, animation projects, or archived clips that look jittery, this can help/

Features We Like

Flowframes offers useful options without overwhelming the user with detail.

● AI frame interpolation using multiple supported models with a drop-down menu.
● Simple drag-and-drop interface makes things easy.
● Batch processing for running multiple videos at once.
● Adjustable FPS targets, speed, and output presets.
● GPU acceleration with a CPU fallback if needed.

Pros

● Clean, straightforward interface that beginners can use.
● Excellent performance on modern GPUs.
● Actively updated with steady improvements over time.

Cons

● Windows-only.
● Heavier AI models can bog down older hardware.
● Apps like his and their models are inherently storage-heavy.

Pro Tip: You may run into extroloation issues; if so, convert the video to MP4 or MKV, with something like HandBrake or FFmpeg. That should help.

Pricing and Licensing Notes

Flowframes is entirely free to download and use. There is no paid tier, feature lock, or nagging restriction. That said, the developer accepts optional donations on the project page to support ongoing development and model improvements. If you end up using it regularly, throwing a few dollars their way is a reasonable way to keep the project moving.

Geek Verdict

Flowframes is a utility that earns its keep pretty quickly if you work with video, especially older pieces. Can you do this manually? Yes. Do you want to? No. The program is an AI-powered frame interpolation accessible to anyone without burying you in confusing settings, and the results are usually very obvious. If you have low-FPS clips that look rough on modern displays, or you just want to experiment with smoother motion, Flowframes is well worth installing.

If you get stuck or want alternatives, drop by the MajorGeeks forums.