soroush.asadi
f83d657844
- .claude/skills/flat-artist: the bundled FlatRender template-creation suite (orchestrator + 16 sub-skills + design/motion R&D), mirrors the Gitea AISkills repo. - services/remotion Root.tsx/templates.tsx: register the 3D templates + Three3DTest. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
57 lines
3.6 KiB
Markdown
57 lines
3.6 KiB
Markdown
---
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name: remotion-sound-effects
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description: Which sound effects (SFX) to use for FlatRender video templates and exactly where to place them in the timeline. Use when adding audio punch to a template — whooshes, impacts, sparkles, pops, risers, confetti — and syncing them to keyframes with Remotion's Audio component.
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---
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# Sound-effect design for templates
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> Status: current FlatRender templates have NO audio yet. This skill is the playbook for adding it. SFX dramatically raise perceived quality — a logo "thud" + sparkle makes a reveal feel pro.
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## How audio works in Remotion
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Use `<Audio>` from `remotion`, placed in the composition tree, timed to frames:
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```tsx
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import { Audio, useVideoConfig } from "remotion";
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// play a one-shot SFX starting at frame 55 (the logo-land beat)
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<Audio src={staticFile("sfx/impact.mp3")} startFrom={0} volume={0.8}
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// mount it only around its moment using a <Sequence from={55}> wrapper
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/>
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```
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Patterns:
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- Wrap one-shots in `<Sequence from={FRAME}>` so they trigger at the right beat.
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- `volume` can be a function of frame for fades: `volume={(f)=>interpolate(f,[0,10],[0,1])}`.
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- Layer SFX over the music bed (see `../remotion-music-picker/SKILL.md`); keep SFX ~ -6 dB under dialogue, on top of music.
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- Put shared SFX in `services/remotion/public/sfx/` and load with `staticFile()`.
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## SFX → moment mapping (sync to the KEYFRAME, not vaguely)
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| Moment in the animation | SFX | Place at |
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|---|---|---|
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| Element/text flies in | **whoosh** (short, directional) | 2-3 frames BEFORE it lands |
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| Logo / hero lands | **impact / thud / boom** | the exact land frame (spring settle) |
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| Glitter / magic reveal | **sparkle / shimmer / chime** | over the particle gather (0.3-0.5s) |
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| Small element appears | **pop / tick / blip** | each appearance (stagger to match) |
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| Countdown ticking | **clock tick** per number, **ding/airhorn** on GO | each number frame |
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| Birthday / party | **party horn + confetti rustle**, soft **chime** | greeting reveal + confetti burst |
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| Sale / promo | **cash register "cha-ching" / coin**, **stamp** on the badge | badge pop |
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| Shine sweep across logo | **soft shimmer swell** | sweep start→end |
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| Transition between scenes | **whoosh + light riser** | on the cut |
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| Build-up before reveal | **riser / uplifter** (0.5-1.5s) | leading INTO the hero moment |
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## Placement principles
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- **Anticipation:** risers and whooshes START before the visual peak and resolve ON it. A whoosh that lands with the logo sells the motion.
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- **One hero hit:** the reveal gets ONE big impact — don't stack 3 booms; it muddies.
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- **Match the motion curve:** fast spring = sharp transient; slow ease = soft swell.
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- **Stagger to the visuals:** if 5 elements pop on different frames, 5 pops on those frames (vary pitch slightly so it's not robotic).
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- **Less is more:** 3-6 well-placed SFX per template beats a wall of sound. Leave silence for contrast.
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- **Loudness:** normalize SFX, peak ~ -3 dB, sit them under the music bed; the final mix shouldn't clip.
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## Free / royalty-aware SFX sources
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Mixkit, Pixabay (sound), Freesound (check each license — CC0 vs attribution), Uppbeat (free tier), and Remotion-safe CC0 packs. ALWAYS record the license per file; prefer CC0/royalty-free with commercial use. Keep an attributions file if any source requires it.
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## Workflow
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1. Identify the 3-6 key beats (reveal, pops, transitions, CTA).
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2. Pick one SFX per beat from the table.
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3. Place via `<Sequence from={frame}>` + `<Audio>`; tune volume + a short fade.
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4. Render with audio and LISTEN — adjust timing by a few frames so hits land exactly on the visual.
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Related: `../remotion-music-picker/SKILL.md`, `../remotion-template-composition/SKILL.md`.
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