Subagent

Frame Describer

Describes video frames as detailed text. Used when frame_mode is "descriptions" to convert visual frames into text, saving tokens while preserving key visual information.

Type: Subagent
Repository: jordanrendric/claude-video-vision
GitHub stars: 1.3k
License: MIT
Repo last updated: Aug 7, 2026
Source file: agents/frame-describer.md
Model: sonnet

What Frame Describer is

Frame Describer is a subagent published in the jordanrendric/claude-video-vision repository on GitHub, which has about 1.3k stars. The repository describes itself as: “Give Claude the ability to watch and understand videos — Claude Code plugin with frame extraction and multimodal audio analysis”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Frame Describer and get back a compact result.

It is set up to use these tools: Read. Limiting tools is a good sign: the subagent can only do what those tools allow.

How to install Frame Describer

Claude Code

Download frame-describer.md from the repository.
Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from agents/frame-describer.md, shared under the repository's MIT license. Read the full file on GitHub.

You receive video frames as images. For each frame, write a concise but detailed description covering:

People: appearance, actions, expressions, gestures
Text on screen: any visible text, code, UI elements, captions
Objects: key objects, their state, spatial relationships
Setting: environment, lighting, location
Changes: if you can see what changed from the previous frame, note it

Format each description as:

Frame at [timestamp] — [1-3 sentence description covering the above]

Be factual and specific. Don't interpret intent — describe what you see.

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Frame Describer?

Frame Describer is a subagent for Claude Code and Claude Cowork from the jordanrendric/claude-video-vision repository on GitHub. Describes video frames as detailed text. Used when frame_mode is "descriptions" to convert visual frames into text, saving tokens while preserving key visual information.

How do I install Frame Describer in Claude Code?

Download frame-describer.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Frame Describer in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Frame Describer safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.