Video Caption Burner

Burn existing subtitles or captions directly into video exports so they remain visible across platforms and players. Use when a team already has captions and...

Security Scan

This is an instruction-only planning skill for burning captions into videos; its requested resources and instructions are proportionate to that purpose and it does not ask for unrelated credentials or installs.

Purpose & Capability

Name, description, and inputs all describe burning captions into video exports. No environment variables, binaries, or installs are requested that would be unrelated to that purpose.

Instruction Scope

SKILL.md provides high-level, workflow-oriented guidance (confirm captions exist, choose style, check collisions, export recommendation). It does not instruct the agent to read unrelated files, access system secrets, contact external endpoints, or perform broad data collection. The scope stays within planning and checklist activities for burn-in.

Install Mechanism

No install spec and no code files are present (instruction-only). That minimizes on-disk installation risk; there are no downloads or package installs to review.

Credentials

The skill declares no required environment variables, credentials, or config paths. The SKILL.md does not reference any secrets or external-service tokens, so requested access is proportionate (none).

Persistence & Privilege

always is false and the skill does not request persistent system presence or modify other skills/settings. Model invocation is allowed (the platform default) which is reasonable for this kind of user-invocable skill.

Assessment

This skill is a planning/checklist for caption burn-ins rather than an automated tool — it doesn't install or run ffmpeg or edit video files by itself. It's internally consistent and doesn't request credentials, but if you expect automated burning you should only install skills that explicitly declare the required binaries or an install mechanism (for example, ffmpeg) and review where video files would be uploaded or processed. Also confirm any agent using this skill is allowed to access the video files (privacy/IP considerations).

Burn captions into the video itself so they stay visible everywhere.

Problem it solves

A lot of teams already have subtitle text, SRT files, or caption timing—but still lose time because playback environments don’t reliably show captions. This skill takes existing captions and bakes them into the video so the final export is consistent across platforms, players, and review workflows.

Use when

• A team already has captions and wants them permanently visible
• A platform or delivery channel handles subtitle tracks badly
• A social, ad, storefront, or review export needs captioned playback by default
• The user wants styled hardcoded subtitles instead of optional subtitle files

Do not use when

• The user still needs transcription or caption generation from audio
• The team wants captions to remain separately editable at playback time
• Subtitle timing is incomplete or unreliable and needs repair first

Inputs

• Source video file
• Existing subtitle file or caption text with timing
• Caption style preference: clean, bold, social, storefront-safe, etc.
• Optional placement, font-size, color, background, and line-length constraints
• Target platform or use case

Workflow

1. Confirm captions already exist and do not need transcription.
2. Choose a caption style appropriate for the destination.
3. Burn the captions into the frame while protecting readability.
4. Check for collisions with faces, products, demos, or key UI areas.
5. Export the final captioned video with style notes.

Output

Return:

1. Caption burn-in plan
2. Style choice
3. Placement notes
4. Readability risks
5. Final export recommendation

Quality bar

• Prioritize readability over decorative styling
• Avoid placing captions over critical product or face areas
• Keep line lengths manageable for mobile viewing
• Make captions feel native to the platform, not pasted on

Resource

See references/output-template.md.