Motion Interpolation
Higher frame rates or slow motion from any source.
2–5x
Frame rate multiplier range
~0.17s
Per interpolated frame (1080p)
RIFE v4.6
State-of-the-art optical flow
Technical overview
Frame interpolation estimates the optical flow between two real frames, then synthesizes an intermediate frame at any point along that motion trajectory. The result is new frames that look like the camera captured them — not the blurred, ghosted output of traditional frame blending.
RIFE v4.6 handles complex motion well: multiple objects moving in different directions, camera pans, and parallax from depth. The UHD mode is optimized for 4K+ content where memory constraints require tiled processing.
Scene-cut detection is critical. Without it, the model tries to interpolate between the last frame of one shot and the first frame of the next, producing a bizarre cross-dissolve. anelo detects shot boundaries during the scene analysis preflight and inserts duplicate frames at cuts instead of interpolated ones.
Use cases
- Convert 24fps cinema content to 48fps or 60fps for VR headsets
- Create smooth slow-motion from 30fps or 60fps originals
- Reduce motion judder on panning shots for large displays
- Increase frame rate for sports or action footage before stereo conversion
- Prepare content for high-refresh VR headsets (90fps, 120fps)
Configuration
- Target FPSselect
Output frame rate. Common targets: 48fps (cinema 2x), 60fps (standard smooth), 90fps (Quest), 120fps (slow-mo).
Default: 60
- UHD modetoggle
Tiled processing for 4K+ content. Reduces VRAM usage at the cost of slightly longer processing.
Default: Auto
- Scene-cut sensitivityslider
How aggressively shot boundaries are detected. Higher values catch more cuts but may split within fast motion.
Default: 0.5
Pipeline stages
Increases frame rate using optical flow estimation. Synthesizes intermediate frames for smoother motion, useful for converting 24fps content to 48fps or 60fps for VR headsets.
RIFE v4.6 with UHD mode for 4K+ content. Configurable multiplier.
Available models
Output formats
Lossless per-frame output at the target frame rate. Feeds into downstream pipeline stages.
Direct video output when interpolation is the only pipeline stage enabled.
Workflows
24fps to 60fps for VR
The most common use case. Film-rate content feels juddered in VR headsets. 2.5x interpolation (24→60) produces smooth playback on Quest and Vision Pro. Scene-cut detection prevents cross-dissolve artifacts at shot boundaries.
Slow-motion from standard footage
Interpolate a 30fps clip to 120fps, then play back at 30fps for 4x slow-motion. Quality is highest on smooth, predictable motion — fast panning or complex multi-object scenes may show artifacts at extreme slowdown rates.
Pre-stereo frame rate bump
Run interpolation before depth estimation and stereo conversion. Higher frame rates produce smoother stereo 3D with less temporal flicker, especially on content with fast camera motion.
Related products
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Who uses this
Start with a free desktop install.
Desktop processing is free with no job limits. Pro adds cloud processing, watermark removal, and advanced 3D controls.