01Phase 01
1. Script Tokenization & Timecode Indexing
Transcript cues and speech boundaries are parsed into interactive word tokens mapped to exact millisecond timecodes on the audio and video timeline.
Transcript Splicer · Zero Paywalls
Text-Based Video & Audio Editor
Edit dialogue recordings by reading transcript cues instead of scrubbing complex timelines. Cut pauses, review filler words, and keep speech pacing natural with zero paywalls.
Text-Based Video & Audio Editor
Ready for a local audio or video file
Local Browser Audio Engine
Scanning speech & quiet pauses…
Reading media and computing RMS energy…
1Reading file
2Decoding audio
3Scanning quiet
4Building map
Loudness:-16.0 LUFS
Peak:-1.0 dBFS
0:00 savedPacing Preset
Speech cushionsFine-tune detection parameters
Balanced
Balanced (~-38dB): Calibrated natural balance recommended for podcasts, YouTube videos, and dialogue.
0.80s
0.20s (all micro-pauses)2.50s (only long pauses)
0.32s
0.00s (flush / jump)0.80s (spacious)
Automatically removes silence before first speech and after last speech.
Pause #01✂️ Cut Proposed
00:14.2 → 00:16.8 (2.6s gap)
1.6s quiet gap; keeps 0.32s breathing room.
Tip: Press Del or Backspace to cut selected silenceR to keep
Silence Map (0)
0 silences found (0.0s dead air) · 0 will be cut, 0 kept
Target ScopeAll Clips
All edits reversible
Studio DSP & Ambience Rack
Real-Time DSP✨
1-Click Full Background Noise Removal
Removes 80Hz rumble, 50/60Hz hum, room hiss & mouth clicks
Anti-Blackout
Fills shortened silence gaps with authentic room tone synthesized from your recording, eliminating unnatural "vacuum dropouts".
Butterworth
-40 dBFS
+2.5dB Clarity
Sibilance
Cubic Spline
-1.0 dBFS
Subtitle Range Protection
Protect Intentional Sentences & Pauses
Importing your subtitle transcript locks dialogue boundaries so dramatic reflections and deliberate speech pauses inside sentences are never auto-cut.
No subtitles loaded
Hesitation Splicer (Fillers & Stutters)
Removes verbal hesitation sounds (um, uh, er, like) and repeated stutters.
0 fillers0 stutters
Merged with acoustic cuts
A/V Dual-System Sync
Drift ConformerEdit Evidence & Provenance
Manifest v1.0Total Proposals
0
Active Cuts
0
Restored Pauses
0
Protected Lines
0
Structural Export Validation:
✔ Zero server uploads (100% Client-Side)
✔ True-Peak Limiter ceiling ≤ -1.0 dBFS
✔ Duration conservation verified (Δ ≤ 5ms)
✔ 8ms anti-click zero-crossing micro-fades
Media Preflight & Capabilities
Source Format:Audio Track
Sample Rate:44.1 kHz
Channels:Stereo (2-ch)
Memory Footprint:~12 MB RAM
Local Processing:100% Client-Side
Verified Export Options:
- ✔ 16-Bit PCM WAV: Uncompressed lossless master audio.
- ✔ Audacity Labels: Drag-and-drop label track for Audacity / Reaper.
- ✔ CSV Cue Sheet: Tabular marker list with exact timestamps.
- ✔ EDL / FCPXML: Timeline cut lists: EDL for Premiere & Resolve, FCPXML for Final Cut & Resolve.
- ✔ Evidence Manifest: JSON & CSV audit trail with a CRC-32 source checksum.
Episode Show Notes
Silence #01 detected (00:04.4 → 00:05.0)
🎬Sequence Track1 clip
Pause Map & Timeline
Click / drag to scrub0:000:00
✨
✨ Cleaning Noise...Background Noise Remover
Multi-band spectral Wiener filtering & room rumble removal
Strong (75%)
0% (Off)50% (Balanced)100% (Studio Max)
Space Play/Pause · Del Trim · R Keep · J/L Jump 2sDouble-click waveform to trim
Lossless 16-Bit Master Audio & Edit Ledger Export
Rendered locally in browser memory with 8ms anti-click micro-fades. Zero server upload.
Detected from video
Chain in Studio FlowTimeline files reference your media by file name only. Final Cut Pro, DaVinci Resolve or Premiere Pro will ask you to relink the clip to the original file.
✨ Hover any tool icon to see what it does · Click to launch
100% browser-local processing · No files uploaded to any server
Acoustic Engineering Guide · Architecture
How this tool works in browser memory
How this tool decodes, analyzes, and masters your dialogue locally with zero cloud latency.
02Phase 02
2. Text-Guided Silence & Filler Auditioning
Inspect hesitation sounds, repeated words, and quiet gaps directly in context. Audition proposed cuts with "Hear Before" and "Preview Cut" before applying changes.
03Phase 03
3. Multi-NLE Timeline & Audio Export
Export uncompressed 16-bit WAV master audio, updated synchronized WebVTT/SRT subtitles, or CMX 3600 EDL and Final Cut Pro XML files for your video editor.
Connected finishing workflows
Explore companion utilities for dialogue cleanup, speech pacing, and mastering.
Auto Subtitle Generator & SRT Exporter
Generate and align WebVTT/SRT subtitles with word timestamps.
Remove Silence from Video
Trim dead air in talking-head videos with synchronized video preview.
Filler Words & Stutter Detector
Review hesitation crutches and stutters with word-level precision.
Audio Standards & Research
Engineering guides & deep-dive workflows
Explore the acoustic principles, ITU-R loudness standards, and pacing techniques behind this tool.
Text-Based Editing8 min read
Text-Based Video Editing Workflow: How to Cut Video by Editing Words
How text-based timeline engines map subtitle tokens to video frame boundaries, preserve sentence structures, and export NLE timelines.
Subtitles6 min read
How to Use Imported SRT or VTT Captions to Review Spoken-Word Edits
How text-audio alignment works: importing SRT/VTT files, protecting enclosed pauses within sentences, and exporting synchronized subtitles.
Jump Cuts7 min read
How to Edit Video Jump Cuts Without Creating Jumpy, Jarring Audio
Eliminating the "jump-cut shock": combining 1.15x punch-in camera zooms with 8ms equal-power audio micro-fades and 0.32s speech cushions.
Frequently Asked Questions
Common Questions & Technical Clarifications
How does text-based video editing work in AutoSilenceCut without cloud servers?+
AutoSilenceCut synchronizes your imported WebVTT or SRT subtitle transcript directly with the browser’s Web Audio and HTML5 video player engines. Clicking any word jumps directly to that timestamp, and trimming quiet pauses or filler words updates the playback cut matrix instantly in memory.
Can I edit both video footage and standalone audio podcast files?+
Yes. You can import video formats (MP4, MOV, WebM) with live synchronized video preview, or audio files (WAV, MP3, M4A, FLAC, OGG) to review and edit dialogue pacing via transcript cues.
How do I transfer text-based edit decisions to Premiere Pro or DaVinci Resolve?+
AutoSilenceCut exports CMX 3600 EDL files, Final Cut Pro XML (.fcpxml), and Audacity label tracks (.txt). Import the EDL into Premiere Pro or DaVinci Resolve, or the FCPXML into Final Cut Pro or DaVinci Resolve, to recreate all your speech cuts on your full-resolution video timeline. The FCPXML references your clip by file name, so relink it to the original file after import.
Can I undo or restore cuts if I change my mind during editing?+
Yes. AutoSilenceCut features a full 50-step undo/redo stack (Cmd+Z / Ctrl+Z) and allows you to toggle or restore any individual cut or word removal at any time before export.
Is there a limit on video duration or transcript length?+
No. Because all audio processing, transcript alignment, and timeline exports run locally in your browser memory, there are no artificial file duration caps, monthly usage quotas, or paywalls.