Dialogue-Synced Sound Effects Placer
Places SFX from a word-level transcript: sync points, frame-accurate timecode, levels under dialogue, loudness targets, and license checks.
Before & after
Same prompt, same agent — the only difference is the skill.
You could go through your video manually and add sound effects where they make sense. You'd need to identify the moments in dialogue or action where sound effects would help, then find or create the right audio files and place them at the exact timestamps. That takes a lot of time to get the timing right. You could use a video editor to layer in the sound effects. This is pretty labor-intensive if you have lots of videos.
SOUND EFFECTS PLACEMENT REPORT VIDEO ANALYZED: "Intro to Cloud Computing" (6 min 32 sec) Transcription complete: 847 words at 60 fps EFFECTS PLACED AUTOMATICALLY (48 total) TIMESTAMP → EFFECT → REASON 00:12 → "ding-notification" → spoken "notification arrived" 00:34 → "whoosh-transition" → topic shift indicated 01:05 → "computer-boot-up" → "system starting up" 01:28 → "warning-beep" (soft) → "warning sign" 02:15 → "typing-fast" → "configuring servers" 03:42 → "success-chime" → "task completed" 04:01 → "network-connect" → "connecting regions" 04:55 → "error-buzz" → "failure scenario" ... (40 more placements with timestamps and rationale) EFFECT LIBRARY MATCHED • 24 effects from installed sound pack (default) • 12 effects from free Creative Commons library • 12 effects generated from templates (dial tones, button clicks) • Volume normalized to -3db average • Fade-in/fade-out: 200ms on all EDITOR EXPORT Premiere Pro XML export ready (File → import_effects_final.xml) Alternative: DaVinci Resolve timeline (effects_final.csv with timings) MANUAL CLEANUP NEEDED • 00:28 - "whoosh" conflict with music (consider removing) • 02:50 - Effect cuts dialogue slightly (reduce volume -2db) Estimate: 15 min custom tweaks vs. 60 min manual placement
About this skill
Add sound effects to talking videos that land on the beat, never cover a word, and sit at the right level. Every effect comes with a timecode, a reason, and a license check.
What it does
- Works from word-level timestamps and spot-checks alignment drift
- Picks only moments that earn a sound, with a consistent effect vocabulary matched to tone
- Aligns the right part of each sound: impact transients on the stressed syllable, whoosh peaks on the cut, risers ending on the reveal
- Converts to timecode at your frame rate, sets levels under dialogue, and gives loudness targets to verify per platform
- With shell access, measures loudness and renders a draft mix with ffmpeg without touching your originals
What you get
A placement table (timecode, file start, trigger, effect, level, reason), an export-ready marker list, license notes, and a mix target.
Best for
Video editors, podcasters, and creators cutting talking-head, explainer, and short-form clips.
SKILL.md preview
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name: dialogue-synced-sound-effects
description: Place sound effects on a talking video from its word-level transcript - pick the moments that earn a sound (punchlines, reveals, stat callouts, topic transitions, cuts), choose the effect and its sync point, convert to timecode at the project frame rate, set levels under the dialogue, and export a placement list or marker file the editor can import, with licensing checked. Use when the user says "add sound effects to my video", "place SFX from this transcript", "where should whooshes go", "automate my sound design", "my sound effects feel late", "my SFX are too loud", or "make a timeline of sound effects for my podcast clip".
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