Smooth Slow Motion
Create smooth slow motion by interpolating new frames. Unlike simple speed reduction which duplicates frames, AI interpolation generates natural in-between frames for fluid slow-mo.
Drag to compare
Drop files here or click to browse
Max 10240.0 MB per file · drop multiple for batch
Processed on our servers — requires a free account
Have feedback? Let us know
How to Use Smooth Slow Motion
- Upload your video file — MP4, MKV, MOV, and other formats are supported
- Choose the target frame rate (30, 48, or 60 FPS)
- Select Fast or Best Quality AI mode
- Click Process — processing time estimate shown before you start
- Download the smooth, high-FPS video
Features
- AI-generated intermediate frames for smooth slow motion
- No frame duplication — natural motion between keyframes
- Combine with speed reduction for ultra-smooth slow-mo
Frequently Asked Questions
- What is frame interpolation?
- Frame interpolation generates new frames between existing ones using AI motion estimation, creating smoother playback without duplicating frames. We use RIFE v4.26, a state-of-the-art neural network for frame interpolation.
- Why is this tool popular for anime?
- Anime is typically animated at 24fps or lower. Frame interpolation creates the silky smooth 60fps look popular on YouTube anime edits. RIFE AI handles anime particularly well since it was trained on diverse motion patterns.
- Will this increase file size?
- Yes, more frames means a larger file. You can use our Compress Video tool afterward to reduce file size while keeping the smooth motion.