music-mix SKILL.md skillA
music-mix from novoads/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add novoads/agent-skills/music-mix@git:20260911.9e39357Pins git:20260911.9e39357 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- novoads/agent-skills
- Path
shared/skills/music-mix/SKILL.md- Versions recorded
- 6
- Latest version
- git:20260911.9e39357, committed Sep 11, 2026
- First version recorded
- Aug 13, 2026
- Size
- 8,697 bytes
- Repository stars
- 28
- License
- MIT
Lays a music bed under a finished video — the music is trimmed and faded to the video's exact length and ducks beneath the voice, while the video stream is copied untouched. Use when the user asks to add music, add a background track, add a music bed or soundtrack, or asks for something like "make a lofi mix of this": "put music under this ad", "add a background track", "give me a couple of music versions". Entered from a finished cut — captions already burned is the preferred input, not a…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Music mix Puts a music bed under a finished video. The bed is trimmed to the video's exact duration, faded out at the tail, and ducked under the voice. This is the last step of the pack: base video → b-roll overlay → burned captions → **music**. Mixing mechanics live entirely in `scripts/music_mix.py`. This file is judgment only — when to enter, what track to pick, where the music comes from, what the user sees. ## Entry condition **A finished video the user has signed off on.** Captions already burned in is the preferred input, because music is genuinely the last thing that happens. That is safe because the script copies the video stream packet for packet (`-c:v copy`) and verifies afterwards that the output's video packets hash identical to the input's — so burned captions come through bit-exact, not "re-encoded but probably fine". If the cut is still moving, wait. Remixing is cheap; re-rendering the pipeline is not. ## Track judgment - **Match the genre to the ad's mood, not to your taste.** Calm skincare and a punchy supplement ad do not want the same bed. Read the script's tone first. …
Read the whole file at its exact version.
How to install
mdr add novoads/agent-skills/music-mix@sha256:8a796ba225803073The line at the top of this page pins the label git:20260911.9e39357, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_h7d4m6khtbyc6drp)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Aug 13, 2026 and Sep 11, 2026, about one every 6 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260911.9e39357 latest | 2026-09-11 | 9e39357 | 8,697 B | A | view · diff |
| git:20260814.0cfabea | 2026-08-14 | 0cfabea | 8,697 B | A | view · diff |
| git:20260814.62e1e32 | 2026-08-14 | 62e1e32 | 8,700 B | A | view · diff |
| git:20260813.5c277a4 | 2026-08-13 | 5c277a4 | 8,700 B | A | view · diff |
| git:20260813.1ff6df2 | 2026-08-13 | 1ff6df2 | 8,700 B | A | view · diff |
| git:20260813.5616c8d | 2026-08-13 | 5616c8d | 8,700 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8697 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
novoads/agent-skills · 28 stars · license MIT · pushed 2026-10-17 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_h7d4m6khtbyc6drp GET https://markdownregistry.com/api/v1/resolve?ref=novoads/agent-skills/music-mix GET https://markdownregistry.com/api/v1/blob/8a796ba2258030735889210e83035d726fba767f9816eb0de7bbb2bd4315a783
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.