video-merge

video-merge is a skill for Claude Code, Cursor from godot-fun/godot-framework. It costs 106 tokens per session (1,026 once invoked), scanned A, original, MIT.

A video joining tool that combines every video in a folder, sorted by filename, into one MP4. It adds a randomly selected half-second transition between clips.

In plain words
What is it for?
Use it to concatenate a folder of videos into a 4K, 60-frame-per-second H.265 video with AAC audio.
Why use it?
It removes the manual work of joining clips and matching their video and audio transitions.

Skill for Claude CodeCursor

Written for Claude Code and Cursor: disable-model-invocation in frontmatter, but also installed under .cursor/.

Good fit Use it to concatenate a folder of videos into a 4K, 60-frame-per-second H.265 video with AAC audio.

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Install with agentmods
npx agentmods add skills/godot-fun/godot-framework/video-merge
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add godot-fun/godot-framework --skill video-merge
Clone the repo
git clone --depth 1 https://github.com/godot-fun/godot-framework

Made for: Claude Code, Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for video-merge

README.md
[![agentmods](https://agentmods.dev/badge/skills/godot-fun/godot-framework/video-merge/github.svg)](https://agentmods.dev/skills/godot-fun/godot-framework/video-merge)
Your own site
<a href="https://agentmods.dev/skills/godot-fun/godot-framework/video-merge"><img src="https://agentmods.dev/badge/skills/godot-fun/godot-framework/video-merge/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for video-merge

Your own site · 80×15
<a href="https://agentmods.dev/skills/godot-fun/godot-framework/video-merge"><img src="https://agentmods.dev/badge/skills/godot-fun/godot-framework/video-merge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,026 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00106 $0.01026
Opus 5 $0.00053 $0.00513
Sonnet 5 $0.00021 $0.00205
Haiku 4.5 $0.00011 $0.00103

Measured 10d ago against content hash d723ba3c6fec, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

video-merge scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/skills/video-merge/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Video Merge

Concatenate every video in a folder (filename sort) into one high-quality MP4. Between each pair, pick a random FFmpeg xfade transition (0.5s). Audio uses matching acrossfade.

Duration is preserved: each cut freeze-pads the outgoing clip by 0.5s (last frame + silence) before the overlap, so output length equals the sum of source clip durations (not shortened by transitions).

Rules

When this skill applies, read and follow skill-dependency-manager �?run scripts as documented, install missing tools into .dependency/.

  • Run merge.py through .dependency/python/python.exe. Never use host python / ffmpeg.
  • Never overwrite sources. Outputs go under video-merge/.
  • Use the bundled script �?do not hand-write equivalent FFmpeg commands.
  • Folder input only �?pass --folder with a directory of clips (top-level files; no recurse).

Quick Start

.dependency/python/python .ai/video-merge/merge.py --folder path/to/clips

Example:

assets/shots/
  01.mp4
  02.mp4
  03.mp4
�?assets/shots/video-merge/shots.mp4

Output Spec (fixed)

Setting Value
Resolution 3840×2160 (scale + letterbox pad)
Frame rate 60 fps
Video H.265 Main10 (libx265, yuv420p10le) @ 40 Mbps
Audio AAC 320 kbps, 48 kHz stereo
Transition 0.5 s, random from the pool below (freeze-pad; duration preserved)
Container .mp4 (hvc1 tag)

Transition Pool (random per cut)

fade · dissolve · wipeleft · wiperight · wipeup · wipedown · slideleft · slideright · circlecrop · pixelize · distance · radial · smoothleft · smoothright · circleopen · circleclose · diagtl · diagtr · hblur · zoomin

Each cut independently samples one transition. Printed in the run log.

Common Flags

--folder · -o / --output

.dependency/python/python .ai/video-merge/merge.py --folder clips
.dependency/python/python .ai/video-merge/merge.py --folder clips -o out/final.mp4

Read the full file on GitHub · 90 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 90 lines · 106 tokens per session scan A d723ba3c6fec

Subscribe to this mod's changes

video-merge is a skill published in the GitHub repository godot-fun/godot-framework (116 stars, last pushed 10d ago), licensed MIT. It adds 106 tokens to every session and 1,026 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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