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Agent skill

Mobile Demo Film Editor

by superset-sh in superset-sh/superset

Edits real mobile screen recordings into a configurable demo video with phone framing, title cards, cutaways and an end card, using a bundled renderer.

Custom licenceAuto-check passedMedia & Creative

Install Mobile Demo Film Editor

skills CLI
$ npx skills add superset-sh/superset --skill mobile-demo-film -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install superset-sh/superset mobile-demo-film --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/superset-sh/superset.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/mobile-demo-film .claude/skills/mobile-demo-film && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
mobile-demo-film
GitHub stars
15k
Token cost
~1.8k tokens
SKILL.md length
866 words
Files
3 (incl. scripts)
Skills in repo
47
Repo updated
First seen
Licence
Custom licence

At a glance

Edits real mobile screen recordings into a configurable demo video with phone framing, title cards, cutaways and an end card, using a bundled renderer.

  • Works in 6 steps: Plan one story. Write a short table of… → Capture real footage with… → Normalize before choosing cuts.… → …
  • Editing a mobile feature demo or launch clip from screen recordings
  • SKILL.md covers Prerequisites, Workflow, Composition spec and Reusing and checking the…
  • Runs Python scripts from its folder; calls python3 and pip

What it does

The skill edits a demo video for a mobile feature from real app recordings. A bundled renderer, `scripts/film.py`, produces silent video with configurable dimensions, frame rate, framing and fades; the defaults are 1080x1920 at 30fps with a phone frame on a warm paper backdrop, and a useful length is one feature in 20 to 40 seconds. The story is planned first: the user's action, the app responding, and the visible result.

The workflow plans one story, captures footage with the separate `mobile-demo-record` skill (which needs macOS; editing existing footage does not), normalizes simulator recordings to a constant frame rate before choosing cuts, composes the film from a JSON spec, and reviews a contact sheet plus a full playback. It needs Python 3.10 or later, Pillow 10.1 or later and ffmpeg with ffprobe and libx264, and font files can be specified so typography stays consistent across machines. Outputs are overwritten on rerun, and the excerpt ends within the review step.

When your agent uses it

  • Editing a mobile feature demo or launch clip from screen recordings
  • Normalizing variable-frame-rate simulator recordings
  • Adding title cards, cutaways and an end card to phone footage

Example prompts

  • “Edit my three screen recordings in ./raw into a 30-second demo with a title card and an end card.”
  • “Normalize the simulator recording raw/01.mov to constant frame rate at 24fps.”
  • “Render the film spec and give me a contact sheet so I can review the transitions.”

Requirements

  • Python 3.10 or later with Pillow 10.1 or later
  • ffmpeg with ffprobe and libx264
  • macOS, only for recording with mobile-demo-record

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Plan one story. Write a short table of on-screen actions and durations. Start with
  2. Capture real footage with mobile-demo-record. Use demo data and a separate take
  3. Normalize before choosing cuts. Simulator recordings have variable frame rates
  4. Compose using a JSON spec beside the recordings
  5. Review a contact sheet and play the entire film
  6. Deliver the film and identify the build, environment, staged data, and omitted steps.

What it can do on your machine

Read from SKILL.md and the folder at commit 6b94a61. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 2 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python3
    • pip

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use pip, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Mobile Demo Film Editor loads about 1.8k tokens when it runs. Until then it costs about 64 tokens; SKILL.md has 866 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~64
When it runs · the whole SKILL.md, loaded when a task matches
~1.8k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 866 words (~1,843 tokens).

“Use this skill to edit a new demo from real app recordings. The bundled renderer produces silent video with configurable dimensions, frame rate, framing, and fades. Defaults are 1080x1920 at 30fps, with a phone frame on a warm paper backdrop…”

— opening of SKILL.md by superset-sh, Custom licence
name
mobile-demo-film

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (scripts) in .agents/skills/mobile-demo-film of superset-sh/superset.

  • SKILL.md
  • scripts/film.py
  • scripts/test_film.py

Open the folder on GitHubat commit 6b94a61

Compare with similar skills

Mobile Demo Film Editor next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Mobile Demo Film Editor compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Mobile Demo Film Editor this skillsuperset-sh/superset15k—~1.8kAutomated safety check: PassCustom licence
Vlog Auto Editznyupup/ai-video-editing-skill150—~6.8kAutomated safety check: PassMIT
Browser Video Recordingnirholas/three.ws2301 repos~1.5kAutomated safety check: PassApache-2.0
Ppt CompressorLeoYeAI/openclaw-master-skills2.2k—~3.9kAutomated safety check: PassMIT
Ffmpeg Kit macOS Codesign Crashdivinevideo/divine-mobile266—~1.1kAutomated safety check: PassMPL-2.0
Manim Video Productionbrowser-use/video-use29k6 repos~3kAutomated safety check: PassMIT

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Works with

Categories

Questions about Mobile Demo Film Editor

What does Mobile Demo Film Editor do?

Edits real mobile screen recordings into a configurable demo video with phone framing, title cards, cutaways and an end card, using a bundled renderer. The skill edits a demo video for a mobile feature from real app recordings.py`, produces silent video with configurable dimensions, frame rate, framing and fades; the defaults are 1080x1920 at 30fps with a phone frame on a warm paper backdrop, and a useful length is one feature in 20 to 40 seconds.

When should I use Mobile Demo Film Editor?

Mobile Demo Film Editor fits situations like: editing a mobile feature demo or launch clip from screen recordings; normalizing variable-frame-rate simulator recordings; adding title cards, cutaways and an end card to phone footage.

How do I install Mobile Demo Film Editor in Claude Code?

Run `npx skills add superset-sh/superset --skill mobile-demo-film -a claude-code`. Or copy the skill folder (.agents/skills/mobile-demo-film in superset-sh/superset) into .claude/skills/mobile-demo-film in your project. Claude Code loads it when a task matches its description.

How do I install Mobile Demo Film Editor in Codex?

Run `npx skills add superset-sh/superset --skill mobile-demo-film -a codex`. Or copy the skill folder (.agents/skills/mobile-demo-film in superset-sh/superset) into .agents/skills/mobile-demo-film in your project. Codex loads it when a task matches its description.

Can I use Mobile Demo Film Editor in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add superset-sh/superset --skill mobile-demo-film -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mobile-demo-film, .gemini/skills/mobile-demo-film, .github/skills/mobile-demo-film and .opencode/skills/mobile-demo-film in your project.

What does Mobile Demo Film Editor need to run?

Going by SKILL.md and its folder, Mobile Demo Film Editor needs Python for the scripts in its folder and the command-line tools its instructions call (python3 and pip). Our summary lists: Python 3.10 or later with Pillow 10.1 or later; ffmpeg with ffprobe and libx264; macOS, only for recording with mobile-demo-record.

Does Mobile Demo Film Editor access the network?

SKILL.md contains no URLs. Its commands use pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Mobile Demo Film Editor safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Mobile Demo Film Editor use?

Mobile Demo Film Editor has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Mobile Demo Film Editor use?

About 1.8k tokens (SKILL.md is roughly 7.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Mobile Demo Film Editor?

Skills that share tags, products or a category with Mobile Demo Film Editor: Vlog Auto Edit (znyupup/ai-video-editing-skill, 150 stars), Browser Video Recording (nirholas/three.ws, 230 stars), Ppt Compressor (LeoYeAI/openclaw-master-skills, 2.2k stars) and Ffmpeg Kit macOS Codesign Crash (divinevideo/divine-mobile, 266 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Mobile Demo Film Editor?

superset-sh (a GitHub organization) maintains it in superset-sh/superset, which has 15,063 GitHub stars. The repository holds 47 skills in this directory. The repository was last updated on October 11, 2026.

Source: superset-sh/superset on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.