editor

A guide for assembling HyperFrames video compositions and rendering them as MP4 files. It combines a scenario description with an asset list and handles timing, transitions, captions, audio, and voice-over synchronization.

In plain words
What is it for?
Use it to compose, preview, render, or refine videos, including caption timing, audio mixing, transitions, and voice-over synchronization.
Why use it?
It keeps the editing and rendering work in one defined workflow, helping the finished video stay aligned with its script, media, and timing.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/alecs5am/ralphy/editor
Any agent
npx skills add alecs5am/ralphy --skill editor
Clone the repo
git clone --depth 1 https://github.com/alecs5am/ralphy

Made for: Claude Code, Codex.

Per session 140 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,676 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00140 $0.03676
Opus 5 $0.00070 $0.01838
Sonnet 5 $0.00028 $0.00735
Haiku 4.5 $0.00014 $0.00368

Measured 3d ago against content hash 88533bdc266a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

editor 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 3d 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.

.agents/skills/editor/SKILL.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Editor playbook

Read this when: "compose the video", "do the render", "render", "preview", "fix captions", "audio mix", "final cut", "tighten transitions".

Composer + renderer. I take scenario.json + asset-manifest.json, assemble an HTML composition with GSAP, and render an MP4 via HyperFrames. I do not generate media — that's the art director. I stitch, time, transition, caption, mix, sanity-check.

STOP rule. Render only via ralphy render. FFmpeg only via ralphy audio / ralphy video. No direct bunx hyperframes render outside debugging, no ad-hoc ffmpeg shells — every recipe is a verb that auto-logs. AGENTS invariant #2.

Engine

HyperFrames is the only render engine. Every project must ship .ralphy/workspaces/<ws>/projects/<id>/index.html. See hyperframes for composition rules, GSAP timelines, registry blocks, captions, transitions, audio mixing.

CLI cookbook

Render only via ralphy render. FFmpeg only via ralphy audio / ralphy video. Never call bunx hyperframes render directly outside debugging, and never shell out to ad-hoc ffmpeg — every recipe below is a verb that auto-logs.

# Final render
ralphy render <project-id> [--loudnorm]
ralphy render <project-id> --fps 60 --quality high

# Captions
ralphy generate captions --project <id> --audio <vo.mp3>     # → captions.json (Caption[])
# HyperFrames also ships a built-in word-level transcriber:
bunx hyperframes transcribe --in <vo.wav> -o captions.json

# Audio recipes — wrap cli/lib/ffmpeg-recipes.ts
ralphy audio loudnorm  --in <vo.mp3>  --out <vo-norm.mp3>           # -16 LUFS for TikTok / Reels
ralphy audio sidechain --voice <vo>   --music <m> --out <mix.mp3>   # duck music under VO
ralphy audio concat    --files a.mp3,b.mp3,c.mp3 --out concat.mp3   # lossless concat

# Video recipes
ralphy video extract-segment --in <src.mp4> --start 1.2 --end 4.5 --out <seg.mp4>
ralphy video burn-subs       --in <src.mp4> --srt <subs.srt> --out <final.mp4>   # last step
ralphy video tonemap-hdr     --in <hdr.mp4> --out <sdr.mp4>                       # HDR → Rec.709
ralphy video concat          --files a.mp4,b.mp4 --out concat.mp4

# HyperFrames iteration loop (foreground only — no auto-Studio)
bunx hyperframes preview .ralphy/workspaces/<ws>/projects/<id>
bunx hyperframes lint    .ralphy/workspaces/<ws>/projects/<id>
bunx hyperframes inspect .ralphy/workspaces/<ws>/projects/<id>
bunx hyperframes add <block-slug> .ralphy/workspaces/<ws>/projects/<id>

# Inspect inputs / outputs
ralphy project show <id> --assets        # asset-manifest before composing
ralphy project show <id> --status        # what's done / missing
ralphy project log <id> --type generations --limit 50    # ffmpeg + render entries

Read the full file on GitHub · 147 lines

Files

What ships with it

7 files 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. 3d ago First seen · 147 lines · 140 tokens per session scan A 88533bdc266a

Subscribe to this mod's changes

editor is a skill published in the GitHub repository alecs5am/ralphy (128 stars, last pushed 8d ago), licensed Apache-2.0. It adds 140 tokens to every session and 3,676 once invoked, about $0.0007 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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