add-voiceover SKILL.md skillA
add-voiceover from jamdotdev/jam-plugin is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jamdotdev/jam-plugin/add-voiceover@git:20261102.0a0ec73Pins git:20261102.0a0ec73 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jamdotdev/jam-plugin
- Path
skills/add-voiceover/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261102.0a0ec73, committed Nov 2, 2026
- First version recorded
- Nov 2, 2026
- Size
- 6,280 bytes
- Repository stars
- 11
- License
- MIT
Add a spoken voiceover to a video: write the script for the ear, voice it line by line with ElevenLabs, Kokoro (a free local model) or your own text-to-speech command, and lay each line under the moment it describes, with a subtitle file. Use when the user asks to add narration, a voiceover, a voice or text-to-speech to a screen recording, demo video or walkthrough, to re-voice a video with another voice, or asks why a generated voiceover sounds robotic, echoes or drifts out of sync.
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
# Add a voiceover
A good voiceover sounds like a colleague showing you something: short spoken lines, each one landing on the moment it talks about. Most bad ones come from a script written for reading, one long take of text-to-speech laid over the whole video, or an expressive voice with unstable settings.
Needs `ffmpeg` and Node 22 or later. The script is `scripts/voiceover.mjs` in this skill's folder and needs no packages.
## 1. Pick the voice
The script takes the first voice that is set up:
1. `VOICEOVER_TTS`: the team's own command. `{out}` is the `.wav` file to write and `{text}` the line, also sent on stdin. Quote an argument that holds spaces (`--voice="Jane Doe"`); backslash escapes are not read.
2. `ELEVENLABS_API_KEY`: ElevenLabs. Defaults: model `eleven_v4`, voice `iP95p4xoKVk53GoZ742B`, stability 0.5, similarity 0.75, speaker boost on, and each line voiced with the two lines around it as context so the intonation carries across. `ELEVENLABS_VOICE_ID` and `ELEVENLABS_MODEL_ID` change them; for a female voice use River, `SAz9YHcvj6GT2YYXdXww`. v4 has no speed or style setting: pace it with punctuation and line length.
…Read the whole file at its exact version.
How to install
mdr add jamdotdev/jam-plugin/add-voiceover@sha256:e7db4b2b853434d6The line at the top of this page pins the label git:20261102.0a0ec73, 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_yq3wlp4fxl4cehih)
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Versions
The registry has recorded 4 versions of this file, all committed on Nov 2, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261102.0a0ec73 latest | 2026-11-02 | 0a0ec73 | 6,280 B | A | view · diff |
| git:20261102.2322216 | 2026-11-02 | 2322216 | 6,110 B | A | view · diff |
| git:20261102.08edb5b | 2026-11-02 | 08edb5b | 6,018 B | A | view · diff |
| git:20261102.ad202ef | 2026-11-02 | ad202ef | 5,997 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 (6280 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
jamdotdev/jam-plugin · 11 stars · license MIT · pushed 2026-11-03 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_yq3wlp4fxl4cehih GET https://markdownregistry.com/api/v1/resolve?ref=jamdotdev/jam-plugin/add-voiceover GET https://markdownregistry.com/api/v1/blob/e7db4b2b853434d67ce2546b99688fa94955c64254177d0d7c70c56ffb82804d
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.
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