media3-video-effects-lottie-muxer

media3-video-effects-lottie-muxer is a skill for Claude Code, Codex from sunnat629/android-media-pack. It costs 35 tokens per session (432 once invoked), scanned A, original, Apache-2.0.

A guide for applying Media3 video effects, Lottie animations, and muxing, which combines processed video and audio into an output file, on Android.

In plain words
What is it for?
Use it for visual effects, Lottie overlays, video export, muxed output, and deciding where Transformer-based processing belongs.
Why use it?
It separates live preview from final export, since they may have different speed and quality requirements. It also helps catch mismatches in containers, audio, frame rates, colors, and device codec support.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for visual effects, Lottie overlays, video export, muxed output, and deciding where Transformer-based processing belongs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sunnat629/android-media-pack/media3-video-effects-lottie-muxer
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 sunnat629/android-media-pack --skill media3-video-effects-lottie-muxer
Clone the repo
git clone --depth 1 https://github.com/sunnat629/android-media-pack

Made for: Claude Code, Codex.

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 media3-video-effects-lottie-muxer

README.md
[![agentmods](https://agentmods.dev/badge/skills/sunnat629/android-media-pack/media3-video-effects-lottie-muxer/github.svg)](https://agentmods.dev/skills/sunnat629/android-media-pack/media3-video-effects-lottie-muxer)
Your own site
<a href="https://agentmods.dev/skills/sunnat629/android-media-pack/media3-video-effects-lottie-muxer"><img src="https://agentmods.dev/badge/skills/sunnat629/android-media-pack/media3-video-effects-lottie-muxer/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 media3-video-effects-lottie-muxer

Your own site · 80×15
<a href="https://agentmods.dev/skills/sunnat629/android-media-pack/media3-video-effects-lottie-muxer"><img src="https://agentmods.dev/badge/skills/sunnat629/android-media-pack/media3-video-effects-lottie-muxer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 432 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.00432
Opus 5 $0.00017 $0.00216
Sonnet 5 $0.00007 $0.00086
Haiku 4.5 $0.00003 $0.00043

Measured 12d ago against content hash 9554c39e9fb7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

media3-video-effects-lottie-muxer 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 12d 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.

.skills/media/processing/media3-video-effects-lottie-muxer/SKILL.md · 52 lines

What it actually says

Trigger

Use for media3-effect, media3-effect-lottie, media3-muxer, visual processing, overlays, effect export, or muxed output.

Rules

  • Start with media3-transformer-editing when the task includes export.
  • Pin Media3 to 1.10.1 through the version catalog.
  • Keep effects/export code in Android source sets.
  • Separate preview playback from final export; they can have different performance and fidelity constraints.
  • Validate input/output container, audio preservation, frame rate, color, and device codec limits.
  • Keep Lottie asset loading deterministic and bundled or cached.
  • Track effect pipeline failures separately from playback failures.

Example

media3-effect = { module = "androidx.media3:media3-effect", version.ref = "media3" }
media3-effect-lottie = { module = "androidx.media3:media3-effect-lottie", version.ref = "media3" }
media3-muxer = { module = "androidx.media3:media3-muxer", version.ref = "media3" }

Do Not

  • Do not apply expensive export effects directly inside Compose state updates.
  • Do not assume preview output exactly matches final muxed output without validation.
  • Do not mix processing errors into generic player analytics.
  • media3-transformer-editing
  • media3-video-playback
  • media3-inspector-metadata-thumbnails
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. 12d ago First seen · 52 lines · 35 tokens per session scan A 9554c39e9fb7

Subscribe to this mod's changes

media3-video-effects-lottie-muxer is a skill published in the GitHub repository sunnat629/android-media-pack (13 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 35 tokens to every session and 432 once invoked, about $0.0002 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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