video-to-audio-foley

video-to-audio-foley is a skill for Claude Code, Codex from calesthio/generative-media-skills. It costs 68 tokens per session (5,133 once invoked), scanned A, original, MIT.

A workflow for adding synchronized sound effects and ambience to silent or under-sounded video with video-to-audio models and editing. Foley means sounds such as footsteps, cloth, props, and impacts that match visible action.

In plain words
What is it for?
Adding effects to short films, animations, games, advertisements, social clips, prototypes, animatics, and atmospheric video, including footsteps, water, vehicles, machinery, crowds, weather, animals, and UI actions.
Why use it?
It provides a first-pass sound bed while accounting for sync, manual corrections, model limits, rights, and final quality checks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Adding effects to short films, animations, games, advertisements, social clips, prototypes, animatics, and atmospheric video, including footsteps, water, vehicles, machinery, crowds, weather, animals, and UI actions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/calesthio/generative-media-skills/video-to-audio-foley
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add calesthio/generative-media-skills --skill video-to-audio-foley
Clone the repo
git clone --depth 1 https://github.com/calesthio/generative-media-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for video-to-audio-foley

README.md
[![agentmods](https://agentmods.dev/badge/skills/calesthio/generative-media-skills/video-to-audio-foley/github.svg)](https://agentmods.dev/skills/calesthio/generative-media-skills/video-to-audio-foley)
Your own site
<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/video-to-audio-foley"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/video-to-audio-foley/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for video-to-audio-foley

Your own site · 80×15
<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/video-to-audio-foley"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/video-to-audio-foley.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,133 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 213
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00068 $0.05133
Opus 5 $0.00034 $0.02567
Sonnet 5 $0.00014 $0.01027
Haiku 4.5 $0.00007 $0.00513

Measured 12d ago against content hash f7ec7df6ce3f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

video-to-audio-foley scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/production/audio-craft/video-to-audio-foley/SKILL.md · 399 lines

How it starts

The opening of the file, as written. The whole thing — 399 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Video-to-audio Foley

Use this skill to turn a silent, generated, animated, game, ad, social, or edit-ready video clip into a credible sound-effects bed. Treat video-to-audio (V2A) as a production accelerator, not as a finished mix. The job is to decide what should be automated, what must be hand-spotted, how to prompt and segment the model, how to preserve sync, and how to verify the result against the picture.

Boundaries

Use automated V2A when:

  • the clip is short enough for the available model or can be divided into coherent beats;
  • the target is a believable first-pass Foley bed, social clip, animatic, ad temp track, game prototype, or atmospheric pass;
  • the visible action has obvious sound causes such as water, footsteps, vehicles, impacts, machinery, crowd, fabric, animals, weather, UI gestures, or prop handling;
  • the user can accept iteration and editorial repair.

Do not rely on automated V2A alone when:

  • frame-exact sync is mission-critical, such as rhythm games, trailers with hard cuts, slapstick hits, weapon impacts, or product demos where every click matters;
  • the output must be delivered as clean reusable game assets or separated stems;
  • the source video contains private people, unreleased product footage, client-confidential material, or copyrighted audio you are not allowed to upload to a hosted provider;
  • the desired sound is an identifiable real person's voice, a copyrighted sound logo, a famous film/game sound, or a protected musical cue;
  • the user needs final dialogue, lip-sync, narration, mix mastering, or music composition rather than Foley/sound effects.

If the user asks for "add sound to this video," first clarify whether they want:

  1. a single mixed audio track attached to the video;
  2. separate ambience / Foley / impacts / props / music stems;
  3. isolated reusable sound assets for a game or library;
  4. only a prompt/workflow, not generated media.

What is documented versus heuristic

Facts below are source-verified as of 2026-07-10 unless a current project/tool registry says otherwise. Provider endpoints, model IDs, costs, licenses, duration limits, output formats, and commercial-use terms are volatile; re-check live docs before making paid calls or promising a deliverable.

Read the full file on GitHub · 399 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 399 lines · 68 tokens per session scan A f7ec7df6ce3f

Subscribe to this mod's changes

video-to-audio-foley is a skill published in the GitHub repository calesthio/generative-media-skills (170 stars, last pushed 2mo ago), licensed MIT. It adds 68 tokens to every session and 5,133 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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