`react-doctor/remotion-deterministic-randomness`

Randomness changes between rendered frames

Category: Bugs
Severity: error
Source: oxlint-plugin-react-doctor
Framework: global
Enabled when: remotion:4
Tags: react-jsx-only
Default: Enabled

Validate the diagnostic

Confirm the reported code matches this rule before you edit it.

Confirm the reported code matches react-doctor/remotion-deterministic-randomness. Compare it with the Before example and verify the same API, framework, and execution context. Treat it as a false positive only when one of those conditions differs.

Compare the code

The corrected pattern shows a focused way to address the diagnostic.

Reported pattern

import { useCurrentFrame } from "remotion";

const Star = ({ id }) => {
  useCurrentFrame();
  return <div style={{ opacity: Math.random() }} />;
};

Corrected pattern

import { random, useCurrentFrame } from "remotion";

const Star = ({ id }) => {
  useCurrentFrame();
  return <div style={{ opacity: random(id) }} />;
};

How to fix

Use the corrected pattern as a reference. Preserve behavior that the rule does not require you to change.

Copyable fix prompt

Copy this self-contained prompt into your coding agent after you confirm the diagnostic.

Fix every confirmed react-doctor/remotion-deterministic-randomness diagnostic in the current repository. Required change: - Use Remotion's seeded random(seed) helper so the same frame produces the same value in every render tab.

Reference transformation:Before:

import { useCurrentFrame } from "remotion";

const Star = ({ id }) => {
  useCurrentFrame();
  return <div style={{ opacity: Math.random() }} />;
};

After:

import { random, useCurrentFrame } from "remotion";

const Star = ({ id }) => {
  useCurrentFrame();
  return <div style={{ opacity: random(id) }} />;
};

Constraints: - Confirm the reported code matches the Before pattern. - Make the smallest change that fixes the root cause. - Preserve behavior and interfaces unrelated to this diagnostic. - Reuse existing project components, utilities, and conventions. - Do not introduce render-phase side effects, render-phase state updates, or Hooks rule violations. - Adapt identifiers and framework details instead of copying blindly. - Do not disable the rule or suppress matching code. - Confirm this rule is enabled for the project: remotion:4. Verification: - Run focused tests for the changed behavior. - Run React Doctor and confirm this diagnostic no longer appears. - Report the files changed and any checks you could not run.

More Bugs rules from the rules reference:

react-doctor/remotion-no-css-animation: CSS animation is not frame-driven
react-doctor/remotion-no-css-transition: CSS transition is not frame-driven
react-doctor/remotion-no-css-url-assets: CSS URL asset can flicker in Remotion
react-doctor/remotion-no-module-scope-delay-render: Module-scoped delayRender blocks every composition
react-doctor/remotion-no-native-media-elements: Native media element bypasses Remotion loading

react-doctor/remotion-deterministic-randomness