voice-sfx-audio

Generate TTS voiceovers, source royalty-free audio, and mix tracks with FFmpeg ducking.

1|Updated Aug 7, 2026
One-click install
npx skills add https://github.com/Deepak-ai-93/deepak-skill --skill voice-sfx-audio-deepak-ai-93
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: voice-sfx-audio
Source: https://github.com/Deepak-ai-93/deepak-skill/tree/main/skills/voice-sfx-audio
Command: npx skills add https://github.com/Deepak-ai-93/deepak-skill --skill voice-sfx-audio-deepak-ai-93

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires kokoro, soundfile, piper-tts, and includes scripts (resource) components.

What problem does it solve? Producing monetizable short-form videos requires voiceovers, sound effects, and background music that are commercially license-safe, plus a properly mixed audio track — sourcing and mixing these manually is slow and legally risky. ## Core Features & Use Cases - Open-source TTS voiceovers: Generate narration with Kokoro-82M (Apache 2.0), Piper, or Chatterbox, including a deep-voice recipe using pitch shifting and warmth EQ on CPU. - License-safe audio sourcing: Pull SFX and music from CC0/CC-BY sources like Kenney, Pixabay, Freesound, and Incompetech with attribution rules for monetized content. - Deterministic FFmpeg mixing: Duck music under narration via sidechain compression, hit -14 LUFS loudness, and integrate audio tracks into HyperFrames compositions. - Audit gate: Run audit-audio.mjs for automated license and mix-contract checks, then a fresh audio-auditor subagent scores the mix (/50, PASS/FIX NEEDED) before delivery. - Use Case: Add a deep male Kokoro voiceover, a ducked Pixabay music bed, and CC0 whoosh SFX to a 30-second reel, then verify the mix passes the audit harness. ## Quick Start Use the voice-sfx-audio skill to generate a Kokoro voiceover for my reel script, add royalty-free background music, and mix everything with FFmpeg ducking at -14 LUFS.

Frequently Asked Questions about voice-sfx-audio

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I add an AI voiceover to a short video?

Generate narration per scene with Kokoro-82M (pip install kokoro soundfile), choosing a voice like am_michael or af_heart. Then mix the voice track with music and SFX using the provided FFmpeg sidechain ducking command.

What open-source TTS engine is best for video narration?

Kokoro-82M is the recommended default: Apache 2.0 licensed, runs locally on CPU, and offers 54 voices across 8+ languages. Piper suits bulk generation, while Chatterbox adds an emotion exaggeration dial.

Which TTS voices are safe for monetized YouTube or TikTok videos?

Use Kokoro (Apache 2.0), Piper (MIT), or Chatterbox (MIT). Avoid F5-TTS and XTTS pre-trained models (non-commercial licenses) and Edge-TTS/gTTS (ToS limits) for any monetized deliverable.

How do I duck background music under a voiceover in FFmpeg?

Use the sidechaincompress filter: lower music to ~30% volume, then apply sidechain compression keyed by the voice track so music automatically drops whenever narration plays. Finish with loudnorm targeting -14 LUFS.

Where can I find royalty-free sound effects for commercial videos?

Kenney.nl and Pixabay Audio offer CC0/commercial-safe SFX and music with no attribution. Freesound.org works if you filter to CC0 or CC-BY; never use CC-NC or BBC Sound Effects clips in monetized content.

Why does my AI voiceover sound robotic and how do I fix it?

Robotic sound usually comes from a female register voice plus aggressive auto-fit speed. Switch to a deep male Kokoro voice like am_fenrir, cap speed at 1.15x, and apply the enhance-voice.mjs recipe (pitch -2 semitones plus warmth EQ).