Ultra-Smooth Frame Interpolation Workflow for ComfyUI

Turn low-FPS AI videos into cinematic, buttery-smooth motion—without artifacts, ghosting, or temporal jitter.


Neural Frame Interpolation Workflow for ComfyUI

Powered by RIFE (Real-Time Intermediate Flow Estimation)
Designed for AI-Generated Video Precision


RIFE VFI PRO transforms AI video from generated to cinematic.

If your footage feels:

  • Choppy

  • Artificial

  • Unpolished

This workflow delivers:
🎞 Smooth motion
🎭 Stable expressions
🎬 Film-ready output


🚀 Overview

RIFE VFI PRO is a high-performance neural frame interpolation workflow built inside ComfyUI, using RIFE (Real-Time Intermediate Flow Estimation) to convert low-FPS AI videos into silky-smooth, cinema-grade motion—without altering timing, speed, or realism.

This workflow is fully optimized for AI-generated content, where traditional interpolation tools fail due to:

  • Non-physical motion

  • Morphing artifacts

  • Facial instability

  • Hand duplication

RIFE solves this by predicting true motion flow, not blending frames.

🧠 Core Technology: RIFE

What Is RIFE?

RIFE (Real-Time Intermediate Flow Estimation) is a deep neural optical-flow model trained to:

  • Understand motion vectors

  • Predict intermediate frames

  • Preserve edges, faces, and motion continuity

Unlike traditional frame blending:

  • No ghosting

  • No double images

  • No blur-based hallucination

✨ Workflow Capabilities

🔹 True Motion Interpolation

RIFE analyzes pixel-level motion trajectories between frames and generates physically plausible in-between frames, resulting in:

  • Natural camera movement

  • Stable facial expressions

  • Clean hand motion

  • Accurate parallax depth

🔹 AI-Video Optimized

Specifically tuned for:

  • AnimateDiff

  • Image-to-Video models

  • Wan / Veo-style outputs

  • AI singing & talking heads

  • Cinematic character shots

Handles:
✔ Stylized motion
✔ Unreal lighting
✔ Non-linear movement

🧩 Workflow Pipeline (ComfyUI)

① Frame / Video Input

Input Types:

  • Frame sequences from AI video generation

  • MP4 / MOV video input

  • Image-to-video outputs

Function:

  • Extracts original frames

  • Preserves frame order and timing

  • Prepares motion pairs for RIFE processing

② RIFE Interpolation Engine

Core Node: RIFE VFI (ComfyUI)

Functions:

  • Optical flow estimation

  • Motion vector prediction

  • Intermediate frame synthesis

Key Strengths:

  • Face-safe interpolation

  • Edge-aware motion prediction

  • Temporal consistency across frames