What is erne-debug-video?

A command that examines a screen recording of a mobile app over time, rather than looking only at still images. It extracts video frames to find visual and interaction problems.

Use it to investigate recordings from iOS or Android apps, focusing on animations, gestures, scrolling, navigation, or another screen area.

Some bugs, such as stuttering animation, gesture conflicts, keyboard overlap, and faulty transitions, only appear during a sequence of actions.

erne-debug-video — Command for Claude Code by JubaKitiashvili

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.

Clone the repo

git clone --depth 1 https://github.com/JubaKitiashvili/everything-react-native-expo

Made for: Claude Code.

Or install erne-universal, the plugin that ships this one along with the rest of its 52 skills, 24 commands, 13 agents.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/jubakitiashvili/everything-react-native-expo/erne-debug-video/github.svg)](https://agentmods.dev/commands/jubakitiashvili/everything-react-native-expo/erne-debug-video)

Your own site

<a href="https://agentmods.dev/commands/jubakitiashvili/everything-react-native-expo/erne-debug-video"><img src="https://agentmods.dev/badge/commands/jubakitiashvili/everything-react-native-expo/erne-debug-video/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/jubakitiashvili/everything-react-native-expo/erne-debug-video"><img src="https://agentmods.dev/badge/commands/jubakitiashvili/everything-react-native-expo/erne-debug-video.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 624 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00017	$0.00624
Opus 5.5	$0.00007	$0.00250
Sonnet 5.5	$0.00003	$0.00125
Haiku 4.5	$0.00002	$0.00062

Measured 8d ago against content hash 14166cd9803a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

erne-debug-video 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 8d 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.

commands/erne-debug-video.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/erne-debug-video — Video Debugging

You are executing the /erne-debug-video command. Analyze screen recordings to detect animation glitches, race conditions, gesture issues, scroll jank, keyboard overlap, and navigation transitions that screenshots cannot capture.

Arguments

/debug-video <file>                    — analyze a screen recording (.mp4, .mov, .webm)
/debug-video <file> --focus <area>     — focus analysis on a specific UI area or interaction
/debug-video <file> --fps              — include frame rate analysis for animation smoothness

Process

Step 1: Extract Key Frames

Use the extract-video-frames.js script to extract frames at key moments
Focus on: transition starts/ends, gesture interactions, state changes, animation keyframes
Extract at higher density during rapid visual changes

Step 2: Temporal Analysis

Apply multimodal vision to extracted frames in sequence
Identify temporal issues across the recording timeline:

Category	Examples
Animation	jank, stutter, dropped frames, wrong easing
Gesture	unresponsive touch, wrong drag behavior, gesture conflict
Transition	flash of wrong content, layout shift, z-order issues
Race Condition	loading state flicker, stale data flash, double render
Keyboard	content overlap, scroll jump, input hidden behind keyboard
Scroll	jank, blank areas, recycling artifacts, momentum issues

Severity: critical · major · minor

Step 3: Root Cause Analysis

Read the relevant component and animation source files
Correlate visual issues with code patterns
Present findings with frame-by-frame evidence

Step 4: Interactive Fix

User picks issue numbers to fix
Apply the fix (minimal change, match project style)
If possible, re-record and compare before/after
Ask: "Does this look correct? Any remaining issues?"

Step 5: Summary

Issues detected (count by severity and category)
Frame evidence for each issue (timestamps + descriptions)
Fixes applied with code diffs
Remaining issues (if any deferred by user)
Save findings to memory for future reference

Read the full file on GitHub · 80 lines

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.

8d ago First seen · 80 lines · 17 tokens per session scan A 14166cd9803a

Subscribe to this mod's changes

erne-debug-video is a command published in the GitHub repository JubaKitiashvili/everything-react-native-expo (49 stars, last pushed 8d ago), licensed MIT. It adds 17 tokens to every session and 624 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-10-09.

Debugging Mobile

erne-debug-video