About
Flowframes is a powerful yet easy-to-use AI video frame interpolation tool built for Windows. It leverages state-of-the-art AI frameworks — primarily RIFE, alongside DAIN, FLAVR, and XVFI — to insert synthetic frames between existing ones, smoothly increasing a video's framerate without introducing jarring artifacts. The result is silky-smooth slow-motion or higher-framerate footage from any source video. One of Flowframes' standout qualities is its broad GPU compatibility. It supports Nvidia, AMD, and Intel GPUs via NCNN/Vulkan, making high-quality interpolation accessible without requiring high-end hardware. The tool is entirely self-contained — no additional Python environments, dependencies, or command-line setup needed. Flowframes accepts a wide range of input formats including MP4, GIF, WEBM, MKV, MOV, BIK, and PNG/JPEG image sequences. Output can be exported as video (MP4, MKV, WEBM, MOV), GIF, or raw frames, with support for modern codecs like H.265/HEVC, VP9, and AV1. Audio and subtitles from the source video are preserved with zero quality loss. Specialized features like Frame De-Duplication and speed compensation make Flowframes particularly effective for 2D animation, while Scene Detection prevents blending artifacts at scene transitions. Patreon subscribers gain access to the latest AI models, real-time output mode, VapourSynth integration, and additional quality-of-life improvements. Flowframes is ideal for content creators, animators, video enthusiasts, and anyone looking to enhance video smoothness without manual frame-by-frame editing.
Key Features
- Multiple AI Interpolation Models: Supports RIFE, DAIN, FLAVR, and XVFI AI models, giving users flexibility to choose between speed and quality depending on their hardware and use case.
- Universal GPU Compatibility: Works with AMD, Nvidia, and Intel GPUs via NCNN/Vulkan, making high-quality AI interpolation accessible to virtually all modern PC users.
- Wide Format Support: Accepts MP4, GIF, WEBM, MKV, MOV, BIK, and image sequences as input, and exports to MP4, MKV, WEBM, MOV, GIF, or raw frames with modern codecs like H.265, VP9, and AV1.
- Frame De-Duplication & Scene Detection: Built-in frame de-duplication with speed compensation handles 2D animation sources gracefully, while scene detection prevents blending artifacts at cuts.
- No Extra Software Required: Fully self-contained installation — no Python, CUDA toolkit, or manual dependency setup needed. Just install and start interpolating.
Use Cases
- Converting 24fps or 30fps footage to 60fps or higher for a smoother viewing experience on modern displays.
- Creating slow-motion video from standard-framerate source clips without expensive high-speed cameras.
- Smoothing 2D animation by interpolating between hand-drawn frames while preserving the original timing.
- Upsampling older film or archival video footage to higher framerates for restoration or modernization projects.
- Enhancing gameplay recordings or screen captures for a more fluid final video output.
Pros
- Extremely Fast Interpolation: Up to 100x faster than DAIN-based solutions, making batch processing of long videos practical even on mid-range hardware.
- Beginner-Friendly Setup: Ships with all required components bundled — no command-line knowledge or technical configuration required to get started.
- Broad GPU Support: Unlike many AI video tools that require Nvidia CUDA, Flowframes also supports AMD and Intel GPUs via Vulkan, expanding its accessibility significantly.
- Lossless Audio & Subtitle Preservation: Passes through all audio tracks and subtitles from the source video with zero quality degradation.
Cons
- Latest Features Locked Behind Patreon: The most recent AI models, real-time output, and VapourSynth integration are only available to Patreon supporters, leaving the free version on an older release.
- Windows Only: Flowframes is exclusively available for Windows 10/11, with no official support for macOS or Linux.
- Older GPUs Not Supported: GPUs older than ~6 years (e.g., GT 710, Intel HD 3xxx/4xxx) are not supported and will not function with the tool.
Frequently Asked Questions
Is Flowframes free to use?
Yes, a free version (currently 1.36.0) is available on itch.io with a 'name your own price' model. Newer versions with additional AI models and features are released first to Patreon supporters.
Which AI models does Flowframes support?
Flowframes supports RIFE (its primary model), DAIN, FLAVR, and XVFI. RIFE and DAIN also have NCNN/Vulkan variants for AMD GPU compatibility.
Does Flowframes work with AMD GPUs?
Yes. Via the NCNN/Vulkan implementation, Flowframes supports AMD GPUs for RIFE and DAIN interpolation, in addition to Nvidia and Intel GPUs.
What video formats can Flowframes handle?
It can read MP4, GIF, WEBM, MKV, MOV, BIK, and more, as well as PNG/JPEG image sequences. Output formats include MP4, MKV, WEBM, MOV, GIF, and raw frames.
Is Flowframes suitable for interpolating 2D animation?
Yes. Flowframes includes built-in frame de-duplication and speed compensation specifically designed to handle the duplicate frames common in 2D animation, along with scene detection to avoid blending across cuts.
