Best practices for Remotion - Video creation in React
SkillScore79Maintained
Automatic
◆Frontend / UI pack
Last verified 8/13/2026
What it changes
Passed 19 of 24 test cases with the skill, and 18 of 24 without it.
Without skill75%
With skill79%
Checks it passed that the model alone missed
Uses Mediabunny to inspect video duration.
Uses Mediabunny for extracting video frames.
Recommends Mediabunny for checking browser decodability.
3 fixed16 passed either way3 still failing2 broke
Pass-rate lift
+4 pp
Tokens
+11%
Agent turns
0%
Response time
-40%
Model gemini-3.6-flashMeasured 8/13/2026v119 of 24 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 3
Prompt
Before passing a user-uploaded MP4 file into a Remotion composition rendering pipeline, I want to verify client-side if the browser can actually decode the H.264/AAC streams without error instead of using standard HTML5 `canPlayType`. What modern web utility library should I use for codec decodability checks?
What was checked, without and with the skill
Checked
Without skill
With skill
Recommends Mediabunny for checking browser decodability.
Missed
Passed
case-04 · gemini-3.6-flash · 8/13/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md38 linessingle file
When to use
Use this skills whenever you are dealing with Remotion code to obtain the domain-specific knowledge.
How to use
Read individual rule files for detailed explanations and code examples:
rules/3d.md - 3D content in Remotion using Three.js and React Three Fiber
rules/animations.md - Fundamental animation skills for Remotion
rules/assets.md - Importing images, videos, audio, and fonts into Remotion
rules/audio.md - Using audio and sound in Remotion - importing, trimming, volume, speed, pitch
rules/calculate-metadata.md - Dynamically set composition duration, dimensions, and props
rules/can-decode.md - Check if a video can be decoded by the browser using Mediabunny
rules/charts.md - Chart and data visualization patterns for Remotion