SKILL verified Apache-2.0 Self-run

Media3 Video Effects Lottie Muxer

Name: Media3 Video Effects Lottie Muxer
Availability: InStock
Author: sunnat629

skill-sunnat629-android-media-pack-media3-video-effects-lottie-muxer · by sunnat629

Compact skill for Media3 video effects, Lottie effects, muxer/export decisions, and Transformer-adjacent processing boundaries.

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Install

$ agentstack add skill-sunnat629-android-media-pack-media3-video-effects-lottie-muxer

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

✓ Prompt-injection patterns
✓ Secret / credential exfiltration
✓ Dangerous shell & filesystem operations
✓ Untrusted network calls
✓ Known-malicious package signatures

What it can access

✓ Network access No
✓ Filesystem access No
✓ Shell / process execution No
✓ Environment & secrets No
✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

✓ Security review passed

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● 17d ago

Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

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About

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

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Author: sunnat629
Source: sunnat629/android-media-pack
License: Apache-2.0

Install and usage instructions live in the source repository linked above.

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Versions

v0.1.0 Imported from the upstream source.