einundzwanzig-verein/videos/.opencode/skills/remotion-best-practices/rules/trimming.md

name, description, metadata

name	description	metadata
trimming	Trimming patterns for Remotion - cut the beginning or end of animations	tags sequence, trim, clip, cut, offset

Use <Sequence> with a negative from value to trim the start of an animation.

Trim the Beginning

A negative from value shifts time backwards, making the animation start partway through:

import { Sequence, useVideoConfig } from "remotion";

const fps = useVideoConfig();

<Sequence from={-0.5 * fps}>
  <MyAnimation />
</Sequence>

The animation appears 15 frames into its progress - the first 15 frames are trimmed off. Inside <MyAnimation>, useCurrentFrame() starts at 15 instead of 0.

Trim the End

Use durationInFrames to unmount content after a specified duration:

<Sequence durationInFrames={1.5 * fps}>
  <MyAnimation />
</Sequence>

The animation plays for 45 frames, then the component unmounts.

Trim and Delay

Nest sequences to both trim the beginning and delay when it appears:

<Sequence from={30}>
  <Sequence from={-15}>
    <MyAnimation />
  </Sequence>
</Sequence>

The inner sequence trims 15 frames from the start, and the outer sequence delays the result by 30 frames.