FDUtility
Frozen-Frame Detection for Pro
Only for Mac
$29.99
Mac
Scan 8 hours of footage in 32 seconds. Visual progress bars, 1000+ file batches, FCPXML export. The only native macOS freeze-frame detector.
FDUtility detects frozen frames in video files at 1,600× realtime. Built for NLE engineers who need to verify that raw footage is freeze-free before editorial, color grading, or delivery.
WHAT IT DOES
Drop your camera files in. FDUtility scans every frame and reports exactly where freezes occur — start time, end time, duration. Export the results as FCPXML timelines and open them directly in Final Cut Pro or DaVinci Resolve.
WHY IT'S FAST
FDUtility uses a two-phase detection algorithm built on AVFoundation and Apple's Accelerate framework:
Phase 1 — Timestamp Gap Scan: Reads compressed sample buffers without decoding video. For VFR camera recordings (the dominant format), this alone produces the complete result at near-instant speed.
Phase 2 — Pixel Comparison: For CFR content, decodes to NV12 and uses vDSP-accelerated Mean Absolute Difference to identify frozen regions.
Result: A 54-minute VFR file processes in ~2 seconds. An 8-hour batch of 20 files completes in 32 seconds.
EXPORT TO YOUR NLE
Generate FCPXML timelines in three modes:
- Gaps: Frozen segments become gaps; clean footage becomes clips
- Frozen Clips: Both frozen and clean segments appear as clips for review
- Non-Freezes Only: Frozen segments removed entirely
Export for Final Cut Pro (FCPXML v1.10) and DaVinci Resolve (FCPXML v1.8) simultaneously. All timing values are frame-aligned to avoid edit-boundary warnings.
BATCH PROCESSING — BUILT FOR SCALE
- Add individual files or entire folders (recursive scan with live import progress)
- Group by filename prefix, date created, or folder structure
- Visual progress bars per file with freeze counts updating live
- Smooth, fluid scrolling even while processing 1,000+ files simultaneously
- Cancel individual files or the entire batch at any time
CONFIGURABLE DETECTION
- Noise Level: -80 to 0 dB (default -60 dB)
- Minimum Duration: 0.1 to 5.0 seconds (default 1.0s)
NO DEPENDENCIES. NO SUBSCRIPTIONS.
FDUtility is 100% Apple-native. No FFmpeg. No Homebrew. No Python. No cloud. No account. Your footage never leaves your machine.
REQUIREMENTS
- macOS 13.0 (Ventura) or later
- Apple Silicon or Intel Mac
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixes an issue where FCPXML "non-frozen only" exports could trim portions
of valid motion content. Drag-and-drop import (added in v1.1) now correctly
preserves full clip duration for short clips and timelapse footage.
The developer, Kazuhito Takahashi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kazuhito Takahashi
- Size
- 2.5 MB
- Category
- Photo & Video
- Compatibility
Requires macOS 13.0 or later.
- Mac
Requires macOS 13.0 or later.
- Mac
- Age Rating
4+
- 4+
- Copyright
- © 2026 KymeraJ
