subtitle-packager
Convert normalized timed transcript data into subtitle artifacts such as SRT and ASS. Use this when a stable normalized transcript JSON already exists and the main job is subtitle chunking, timing normalization, and export packaging.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/postplusai/postplus-skills --skill subtitle-packager- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads subtitle-packager automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Subtitle Packager
Use When
- A stable timed transcript already exists and the job is subtitle chunking, SRT/ASS generation, readable caption packaging, or editor handoff.
- This skill packages transcripts. It must not call speech-to-text or video analysis models.
Do Not Use When
- The task belongs to ideation, QA, or another released skill listed in the handoff section.
- Required inputs are missing and guessing would change the result.
Input Boundary
- Primary input is
normalized-transcript.jsonfromaudio-transcriptionorvideo-transcriptionwith stable timing. - If timing is missing or invalid, stop and say so plainly. Do not invent timing unless the user explicitly asks for heuristic timing.
- Preserve source transcript path, subtitle mode, output path, and source basis in handoff notes or intermediate JSON.
Path And Handoff
- Keep chunking inputs, intermediate subtitle JSON, and render artifacts under
.postplus/subtitle-packagerwhen they are internal state. - Keep final user-facing
.srt,.ass, and editor handoff files outside.postplus. - Start with one normalized transcript before broader batch packaging.
- Return final subtitle paths, source transcript path, selected chunk mode, and any profile path used.
Stop Conditions
- Stop when required user intent, source evidence, or owned input artifacts are missing and guessing would change the result.
- If an owned CLI or script command still fails after any bounded recovery allowed by the executing PostPlus skill, report the exact error and stop. Do not bypass the failure with metadata-only answers, readiness probing, local payload rewrites, fallback providers, or unpublished tools.
Public Command Boundary
- Choose the smallest matching command or workflow from the user input and run it directly.
- If an owned CLI or script command still fails after any bounded recovery allowed by the executing PostPlus skill, report the exact error and stop. Do not bypass the failure with metadata-only answers, readiness probing, local payload rewrites, fallback providers, or unpublished tools.
FAQ
What does the subtitle-packager skill do?
Convert normalized timed transcript data into subtitle artifacts such as SRT and ASS. Use this when a stable normalized transcript JSON already exists and the main job is subtitle chunking, timing normalization, and export packaging.
How do I install subtitle-packager?
Run npx skills add https://github.com/postplusai/postplus-skills --skill subtitle-packager in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/subtitle-packager/ (personal) or .claude/skills/subtitle-packager/ (project).
Which AI agents can use subtitle-packager?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is subtitle-packager safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains subtitle-packager?
It is published by postplusai in postplusai/postplus-skills. It has 1,009 recorded installs.
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