SDUtility
Silence Detection Utility
Only for Mac
$29.99
Mac
Detect silence AND frozen video frames. Lossless concatenation with mixed resolutions. Export to FCP, DaVinci Resolve, ProRes, H.264 & HEVC. No subscription.
SDUtility — Silence & Freeze Detection Utility
Detect, visualize, and remove silence and frozen video frames from your media files — directly on your Mac, with no cloud uploads and no subscription.
Drop your files in. Click Process. Export clean, silence-free video in seconds. Or skip processing entirely and use SDUtility as a fast lossless concatenation tool — just import, arrange, and export.
SILENCE AND FREEZE FRAME DETECTION THAT ACTUALLY WORKS
- Analyzes 60 minutes of audio in ~2 seconds on Apple Silicon
- Detects video freeze frames (stuck frames from VFR cameras, screen recordings, OBS, and game capture) by analyzing PTS gaps in the video track — no other tool does this
- Adjust threshold and minimum duration with real-time visual feedback — no re-processing required
- Audio dropouts (dead cable, encoder gaps, clip glitches) are caught automatically, independent of threshold settings
- Freeze regions and audio silence are tagged separately in your timeline
LOSSLESS CONCATENATION — NO SILENCE DETECTION NEEDED
- Import clips of any resolution or frame rate and concatenate them directly
- Flexible handling of mixed dimensions — no need to pre-conform your media
- Lossless passthrough preserves original quality with zero re-encoding
- Perfect for assembling multi-camera recordings, chapter files, or segmented captures into a single deliverable
PROFESSIONAL TIMELINE EDITOR
- Magnetic timeline with drag-to-reorder, split, trim, and enable/disable
- Sidecar silence track with waveform visualization and editable silence regions
- Drag silence region handles to fine-tune boundaries frame by frame
- Navigate between silence regions with keyboard shortcuts
VERSATILE EXPORT FORMATS
- Lossless passthrough (direct copy, no re-encoding)
- ProRes 422 HQ for professional post-production
- H.264 and HEVC for delivery
- FCPXML for Final Cut Pro — source clips import directly into your event
- FCPXML for DaVinci Resolve
- Multi-format batch export: select all the formats you need and export once
- Three silence modes: Silence Removed, Silence as Gaps, Silence as Clips
- Freeze frames and audio silence are tagged separately — [FREEZE] and [SILENCE] clips get distinct keywords and audio roles in your FCP/Resolve timeline
CUSTOMIZABLE KEYBOARD SHORTCUTS
- Every action is remappable — playback, navigation, zoom, silence jumps
- Categorized shortcut editor with conflict detection
- Designed for keyboard-driven professional workflows
BUILT FOR SPEED
- vDSP-accelerated waveform rendering
- Concurrent multi-clip processing
- Native Apple Silicon performance
- Zero external dependencies — uses only Apple frameworks
WORKS WITH YOUR EXISTING WORKFLOW
SDUtility is a companion to Final Cut Pro and DaVinci Resolve, not a replacement. Process your raw footage in SDUtility, export FCPXML with silence and freeze frames identified, and continue editing in your NLE with all source clips intact. Filter by "Video Freeze" or "Silence" keywords to instantly locate problem regions.
No subscription. No cloud. No account required.
Buy once, own forever.
Requirements: macOS 13.0 (Ventura) or later.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
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
- 3.5 MB
- Category
- Photo & Video
- Compatibility
Requires macOS 13.0 or later.
- Mac
Requires macOS 13.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 KymeraJ
