remotion-dev/remotion · error

Expected LUT colors, got more.

Error message

Expected ${data.length / 3} LUT colors, got more.

What it means

Once the LUT size header is known, the parser allocates a Float32Array holding exactly size*3 (1D) or size^3*3 (3D) floats, i.e. data.length/3 color entries. This error is thrown when a color line arrives after the table is already full — the file contains more color rows than the declared size allows. The message reports the exact expected count so the mismatch is obvious.

Solutions

1. Correct the size header to match the actual number of color rows (e.g. set LUT_3D_SIZE 33 for 35937 rows, cube root of the data-line count).
2. Remove the surplus trailing color lines.
3. Re-export the LUT so the header and table agree.
4. Pre-count non-header data lines in the text and compare with the declared size^3 before parsing.

Example fix

// before (8 rows of data)
LUT_1D_SIZE 4
// after
LUT_1D_SIZE 8

const sizeMatch = /LUT_3D_SIZE\s+(\d+)/.exec(text);
if (sizeMatch) {
  const n = Number(sizeMatch[1]);
  const rows = text.split(/\r?\n/).filter((l) => {
    const p = l.trim().split(/\s+/);
    return p.length === 3 && p.every((x) => Number.isFinite(Number(x)));
  }).length;
  if (rows > n ** 3) throw new Error(`Header says ${n ** 3} colors, file has ${rows}`);
}

try {
  const lut = parseCubeLut(text);
} catch (e) {
  if (/got more/.test((e as Error).message)) {
    console.error('Declared LUT size is smaller than the color table');
  }
}

When it happens

Trigger: parseCubeLut(text) where the declared LUT_3D_SIZE n implies n^3 colors but the file contains more than n^3 data lines (e.g. declared 32 while the table has 33^3 entries), or a 1D LUT declared with LUT_1D_SIZE smaller than its actual table length.

Common situations: Size header edited after export (author shrank LUT_3D_SIZE to save space but kept the full table); files exported at one resolution and patched to another; truncated re-save that kept the old (larger) table but lowered the header value.

Understand the failure class

Background: "value must be between 0 and 1" / "out of range" / "must not be negative" errors: fixing range-validation failures across open-source libraries — this error's family across 42 libraries.

Related errors

• Combined 1D and 3D LUTs are not supported.
• Duplicate on line .
• Expected LUT colors, got .
• Expected LUT_1D_SIZE or LUT_3D_SIZE.
• Expected LUT_1D_SIZE or LUT_3D_SIZE before color data.

AI-assisted analysis of remotion-dev/remotion@46a3a6bf13 (2026-09-18). Data as JSON: /api/errors/92c1f374e8ff3cd4. Report an issue: GitHub.

Appendix: source

Thrown at packages/studio/src/helpers/cube-lut.ts:118

			throw new Error(
				`Unsupported LUT header "${keyword}" on line ${index + 1}.`,
			);
		}

		if (data === null) {
			throw new Error('Expected LUT_1D_SIZE or LUT_3D_SIZE before color data.');
		}

		const color = [Number(keyword), ...numbers];
		if (
			color.length !== 3 ||
			!color.every((value) => Number.isFinite(Math.fround(value)))
		) {
			throw new Error(`Invalid LUT color on line ${index + 1}.`);
		}

		if (offset + 3 > data.length) {
			throw new Error(`Expected ${data.length / 3} LUT colors, got more.`);
		}

		data.set(color, offset);
		offset += 3;
	}

	if (type === null || data === null) {
		throw new Error('Expected LUT_1D_SIZE or LUT_3D_SIZE.');
	}

	if (offset !== data.length) {
		throw new Error(
			`Expected ${data.length / 3} LUT colors, got ${offset / 3}.`,
		);
	}

	if (domainMin.some((min, channel) => min >= domainMax[channel])) {
		throw new Error(

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