Motion Frame Rate Interpolator

Motion Frame Rate Interpolator converts standard 24, 25, and 30 fps videos into
fluid 60, 90, or 120 fps high-frame-rate video or smooth 0.5x / 0.25x slow-motion
clips on Linux. A lightweight Linux alternative to SmoothVideo Project (SVP) for
offline motion-compensated frame interpolation and frame cadence analysis.

Key Features:
- Motion-compensated optical flow interpolation (minterpolate MCI with adaptive
overlapped block motion compensation, bidirectional motion estimation, variable
block size, and scene-cut detection) via the bundled FFmpeg engine.
- Fast temporal blend mode (framerate filter) for rapid high-FPS conversions.
- Smooth 0.5x and 0.25x optical-flow slow-motion synthesis with synchronized
audio tempo scaling (atempo).
- Side-by-side Source vs. Interpolated Frame viewer with frame-by-frame stepping
and audio-enabled preview playback.
- Real PTS & Cadence Inspector: parses per-frame presentation timestamps (PTS)
to verify exact input/output frame multiplication, instantaneous FPS, and
millisecond frame-delta uniformity, with CSV and JSON report export.
- Batch conversion queue supporting H.264 (libx264), HEVC (libx265), and VP9
output containers (.mp4, .mkv, .webm).

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by SVP Team or SmoothVideo Project.