Frame Interpolation & Video Upscaling directly in After Effects.
Remove duplicates, smooth motion, and enlarge clips, locally on your GPU.

Features · Models · Install · Build

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AniSmooth is a free, local After Effects extension: remove duplicate frames, smooth video with RIFE/Flowframes, and upscale clips on your own GPU via a Python backend.

Unlike other large and heavy extensions, AniSmooth is built with a small, clean, and highly compact codebase. The code is split into simple, organized files to ensure the extension loads instantly and runs smoothly alongside other tools without slowing down After Effects.

Note

Compatibility: After Effects CC 2018 → CC 2026+ (v15.0+). Windows primary support.

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🚀 Features

Tab	What it does
Deadframes	Remove duplicate frames: threshold slider, motion tracking, frozen-character detection.
Interpolation	RIFE 4.25 (CUDA / TensorRT). Multipliers 2×–10× or custom up to 64×.
Upscale	2× / 4× with ShuffleCUGAN models tuned for anime.
Flowframes	Drives your local Flowframes app: RIFE NCNN / NCNN-VS / DAIN, up to 16×, h264/h265/AV1.
Queue	One serial queue for all jobs; pre-renders on add; pause/cancel/retry; persists across restarts.
System & Settings	GPU/VRAM diagnostics, setup wizard, output prefs, interface toggles, collapsible panels, presets.

Note

Flowframes: only 1.42.0 (Patreon) is supported now; 1.36.0 (free) support coming soon. Set the Flowframes.exe path in Settings (auto-detected in the default location).

📸 Screenshots

Duplicate Frame Removal

Frame Interpolation

Video Upscaling

System Monitor & Console

Settings

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🧠 Supported Models

Note

Beta: only the selected best-performing models are included for now; more will be added once the extension is fully stable.

Frame Interpolation (RIFE 4.25)

Model Key	Name	Params	VRAM	Engine	Use Case
rife4.25	RIFE 4.25 Cuda	1.3M	~2GB	PyTorch CUDA	Fast, lightweight; older GPUs.
rife4.25-heavy	RIFE 4.25 HEAVY Cuda	5.1M	~6GB	PyTorch CUDA	Best motion; needs a stronger GPU.
rife4.25-tensorrt	RIFE 4.25 TensorRT	1.3M	~2GB	NVIDIA TensorRT	Up to 1.8× faster on NVIDIA.
rife4.25-heavy-tensorrt	RIFE 4.25 HEAVY TensorRT	5.1M	~6GB	NVIDIA TensorRT	High quality, much faster on NVIDIA.

Video Upscaling

Model Key	Name	Params	VRAM	Engine	Use Case
adore	Adore Cuda	4M	~3GB	PyTorch CUDA	Sharp lines, retained detail.
fallin_soft	Fallin Soft Cuda	3.9M	~4GB	PyTorch CUDA	Anime: smooth colors, clean backgrounds.

Flowframes uses its own model set (RIFE NCNN up to 4.26, DAIN) from your Flowframes install, not the table above.

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📦 Installation

Method 1: ZXP Installer (easiest)

1. Pick your AE version folder (AE2018 / AE2020 / AE2022).
2. Get ZXP Installer.
3. Drag AniSmooth_AE2020.zxp (or your version) onto it.
4. Restart AE → Window > Extensions > AniSmooth.

Method 2: Windows Setup Wizard (.exe)

1. Run AniSmoothSetup_AE2020.exe from your version folder.
2. The wizard handles file placement and registry keys.

Method 3: Manual folder install

1. Copy the AniSmooth folder to C:\Program Files (x86)\Common Files\Adobe\CEP\extensions\.
2. Enable PlayerDebugMode: run Add-Keys.reg / Add-Keys.bat (as admin).
3. Restart After Effects.

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🛠️ Building from Source

cd tools && npm install
cd .. && npm run build:all

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Warning

Runs local Python and AI models. Needs an NVIDIA GPU for CUDA acceleration and enough VRAM (2GB+ basic, 6GB+ heavy models).