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Flowframes - Windows GUI for Video Interpolation

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Flowframes Windows GUI for video interpolation - Supports RIFE (Pytorch & NCNN), DAIN (NCNN), and FLAVR (Pytorch) implementations.

Flowframes is open-source donationware. Builds are released for free on itch after an early-access period on Patreon. This repo's code is complete and does not "paywall" experienced users who want to compile the program themselves or want to contribute to the development.

However, I do not provide support for self-built versions as I can't guarantee that the code of this repo is stable at any given moment.

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Quick Installation

Using A Pytorch Implementation

Flowframes comes with RIFE-NCNN which runs on Tencent's NCNN framework, which allows it to run on any modern (Vulkan-capable) GPU.

However, the official RIFE implementation run best via its original Pytorch implementation.

The requirements to run these are the following:

More Details On Python Dependencies

Configuration

All Settings have reasonable defaults, so users do not need to do any configuration before using the program.

Here is an explanation of some of the more important settings.

Application

Interpolation

AI Specific Settings

Video Export

Debugging / Experimental

System Requirements

Minimum:

Recommended:

Frequently Asked Questions (FAQ)

Q: What's the difference between RIFE CUDA and RIFE NCNN? Which one should I use?
A: The results should be identical, however, RIFE-NCNN also runs on AMD cards, CUDA only on Nvidia. If you have an Nvidia card, use CUDA as it's faster.

Q: What is frame de-duplication for? When should I enable or disable it?
A: It's primarily for 2D animation, where the video has consecutive frames without changes. These have to be removed before interpolation to avoid choppy outputs. Enable it for 2D animation, disable it for constant frame rate content like camera footage or 3D rendered videos.

Q: My output looks very choppy, especially in dark (or low-contrast) scenes!
A: Disable De-Duplication (or reduce the threshold if you still need it)

Q: What's the technical difference between the de-duplication modes "Remove During Extraction" and "Remove After Extraction"?
A: "During" uses ffmpeg's mpdecimate filter and won't extract duplicate frames at all. "After" extracts all frames and then checks for duplicates by checking the image difference using Magick.NET, which is slower but more accurate and flexible.

Q: How does Auto-Encode work, and should I enable or disable it?
A: It encodes your output video during interpolation, instead of afterwards. Enable it unless you have a very weak CPU.

Q: I downloaded a "Full" package but now want to switch to my own system Python installation. How do I do that?
A: Go to FlowframesData/pkgs/ and delete the folders py-tu or py-amp, whichever you have. Flowframes will now try to use system python.