fix

src/components/video-editor/VideoEditor.tsx

@@ -1232,16 +1232,11 @@ export default function VideoEditor() {
 		// Build export settings from current state
 		const sourceWidth = video.videoWidth || 1920;
 		const sourceHeight = video.videoHeight || 1080;
-		const aspectRatioValue =
-			aspectRatio === "native"
-				? getNativeAspectRatioValue(sourceWidth, sourceHeight, cropRegion)
-				: getAspectRatioValue(aspectRatio);
 		const gifDimensions = calculateOutputDimensions(
 			sourceWidth,
 			sourceHeight,
 			gifSizePreset,
 			GIF_SIZE_PRESETS,
-			aspectRatioValue,
 		);
 
 		const settings: ExportSettings = {
@@ -1265,17 +1260,7 @@ export default function VideoEditor() {
 
 		// Start export immediately
 		handleExport(settings);
-	}, [
+	}, [videoPath, exportFormat, exportQuality, gifFrameRate, gifLoop, gifSizePreset, handleExport]);
-		videoPath,
-		exportFormat,
-		exportQuality,
-		gifFrameRate,
-		gifLoop,
-		gifSizePreset,
-		aspectRatio,
-		cropRegion,
-		handleExport,
-	]);
 
 	const handleCancelExport = useCallback(() => {
 		if (exporterRef.current) {
@@ -1490,13 +1475,6 @@ export default function VideoEditor() {
 								videoPlaybackRef.current?.video?.videoHeight || 1080,
 								gifSizePreset,
 								GIF_SIZE_PRESETS,
-								aspectRatio === "native"
-									? getNativeAspectRatioValue(
-											videoPlaybackRef.current?.video?.videoWidth || 1920,
-											videoPlaybackRef.current?.video?.videoHeight || 1080,
-											cropRegion,
-										)
-									: getAspectRatioValue(aspectRatio),
 							)}
 							onExport={handleOpenExportDialog}
 							selectedAnnotationId={selectedAnnotationId}

src/lib/exporter/gifExporter.test.ts

@@ -1,19 +0,0 @@
-import { describe, expect, it } from "vitest";
-import { calculateOutputDimensions } from "./gifExporter";
-import { GIF_SIZE_PRESETS } from "./types";
-
-describe("calculateOutputDimensions", () => {
-	it("uses the selected aspect ratio for scaled GIF exports", () => {
-		expect(calculateOutputDimensions(1080, 1920, "medium", GIF_SIZE_PRESETS, 16 / 9)).toEqual({
-			width: 1280,
-			height: 720,
-		});
-	});
-
-	it("fits original-size GIF exports within the source bounds at the selected aspect ratio", () => {
-		expect(calculateOutputDimensions(1080, 1920, "original", GIF_SIZE_PRESETS, 16 / 9)).toEqual({
-			width: 1080,
-			height: 606,
-		});
-	});
-});

src/lib/exporter/gifExporter.ts

@@ -58,39 +58,24 @@ export function calculateOutputDimensions(
 	sourceHeight: number,
 	sizePreset: GifSizePreset,
 	sizePresets: typeof GIF_SIZE_PRESETS,
-	targetAspectRatio = sourceWidth / sourceHeight,
 ): { width: number; height: number } {
 	const preset = sizePresets[sizePreset];
 	const maxHeight = preset.maxHeight;
-	const aspectRatio =
-		Number.isFinite(targetAspectRatio) && targetAspectRatio > 0
-			? targetAspectRatio
-			: sourceWidth / sourceHeight;
 
-	const toEven = (value: number) => {
+	// If original is smaller than max height or preset is 'original', use source dimensions
-		const evenValue = Math.max(2, Math.floor(value / 2) * 2);
+	if (sourceHeight <= maxHeight || sizePreset === "original") {
-		return evenValue;
+		return { width: sourceWidth, height: sourceHeight };
-	};
-
-	if (sizePreset === "original") {
-		const sourceAspect = sourceWidth / sourceHeight;
-		if (aspectRatio >= sourceAspect) {
-			const width = toEven(sourceWidth);
-			const height = toEven(width / aspectRatio);
-			return { width, height };
-		}
-
-		const height = toEven(sourceHeight);
-		const width = toEven(height * aspectRatio);
-		return { width, height };
 	}
 
-	const targetHeight = maxHeight;
+	// Calculate scaled dimensions preserving aspect ratio
-	const targetWidth = Math.round(targetHeight * aspectRatio);
+	const aspectRatio = sourceWidth / sourceHeight;
+	const newHeight = maxHeight;
+	const newWidth = Math.round(newHeight * aspectRatio);
 
+	// Ensure dimensions are even (required for some encoders)
 	return {
-		width: toEven(targetWidth),
+		width: newWidth % 2 === 0 ? newWidth : newWidth + 1,
-		height: toEven(targetHeight),
+		height: newHeight % 2 === 0 ? newHeight : newHeight + 1,
 	};
 }
 

src/lib/exporter/streamingDecoder.test.ts

@@ -0,0 +1,47 @@
+import { describe, expect, it } from "vitest";
+import { shouldFailDecodeEndedEarly } from "./streamingDecoder";
+
+describe("shouldFailDecodeEndedEarly", () => {
+	it("does not fail once every segment has been satisfied", () => {
+		expect(
+			shouldFailDecodeEndedEarly({
+				cancelled: false,
+				lastDecodedFrameSec: 5.33,
+				requiredEndSec: 6.498,
+				streamDurationSec: 5.33,
+			}),
+		).toBe(false);
+	});
+
+	it("fails when decode stops far before the required end", () => {
+		expect(
+			shouldFailDecodeEndedEarly({
+				cancelled: false,
+				lastDecodedFrameSec: 5.33,
+				requiredEndSec: 10,
+				streamDurationSec: 5.33,
+			}),
+		).toBe(true);
+	});
+
+	it("fails when no frame could be decoded for a non-empty timeline", () => {
+		expect(
+			shouldFailDecodeEndedEarly({
+				cancelled: false,
+				lastDecodedFrameSec: null,
+				requiredEndSec: 1,
+			}),
+		).toBe(true);
+	});
+
+	it("fails when the decoder has not reached the reported stream end", () => {
+		expect(
+			shouldFailDecodeEndedEarly({
+				cancelled: false,
+				lastDecodedFrameSec: 4.9,
+				requiredEndSec: 6.498,
+				streamDurationSec: 5.33,
+			}),
+		).toBe(true);
+	});
+});

src/lib/exporter/streamingDecoder.ts

@@ -12,6 +12,55 @@ export interface DecodedVideoInfo {
 	audioCodec?: string;
 }
 
+type EarlyDecodeEndCheck = {
+	cancelled: boolean;
+	lastDecodedFrameSec: number | null;
+	requiredEndSec: number;
+	streamDurationSec?: number;
+};
+
+const EARLY_DECODE_END_THRESHOLD_SEC = 1;
+const METADATA_TAIL_TOLERANCE_SEC = 1.5;
+const STREAM_DURATION_MATCH_TOLERANCE_SEC = 0.25;
+
+export function shouldFailDecodeEndedEarly({
+	cancelled,
+	lastDecodedFrameSec,
+	requiredEndSec,
+	streamDurationSec,
+}: EarlyDecodeEndCheck): boolean {
+	if (cancelled || requiredEndSec <= 0) {
+		return false;
+	}
+
+	if (lastDecodedFrameSec === null) {
+		return true;
+	}
+
+	const decodeGapSec = requiredEndSec - lastDecodedFrameSec;
+	if (decodeGapSec <= EARLY_DECODE_END_THRESHOLD_SEC) {
+		return false;
+	}
+
+	if (typeof streamDurationSec !== "number" || !Number.isFinite(streamDurationSec)) {
+		return true;
+	}
+
+	const metadataTailSec = requiredEndSec - streamDurationSec;
+	const decodedNearStreamEnd =
+		Math.abs(lastDecodedFrameSec - streamDurationSec) <= STREAM_DURATION_MATCH_TOLERANCE_SEC;
+
+	if (
+		decodedNearStreamEnd &&
+		metadataTailSec > 0 &&
+		metadataTailSec <= METADATA_TAIL_TOLERANCE_SEC
+	) {
+		return false;
+	}
+
+	return true;
+}
+
 /** Caller must close the VideoFrame after use. */
 type OnFrameCallback = (
 	frame: VideoFrame,
@@ -366,12 +415,17 @@ export class StreamingVideoDecoder {
 
 		const requiredEndSec = segments.length > 0 ? segments[segments.length - 1].endSec : 0;
 		if (
-			!this.cancelled &&
+			shouldFailDecodeEndedEarly({
-			lastDecodedFrameSec !== null &&
+				cancelled: this.cancelled,
-			requiredEndSec - lastDecodedFrameSec > 1
+				lastDecodedFrameSec,
+				requiredEndSec,
+				streamDurationSec: this.metadata.streamDuration,
+			})
 		) {
+			const decodedAtLabel =
+				lastDecodedFrameSec === null ? "no decoded frame" : `${lastDecodedFrameSec.toFixed(3)}s`;
 			throw new Error(
-				`Video decode ended early at ${lastDecodedFrameSec.toFixed(3)}s (needed ${requiredEndSec.toFixed(3)}s).`,
+				`Video decode ended early at ${decodedAtLabel} (needed ${requiredEndSec.toFixed(3)}s).`,
 			);
 		}
 	}

tests/e2e/gif-export.spec.ts

@@ -87,8 +87,8 @@ test("exports a GIF from a loaded video", async () => {
 		await editorWindow.getByTestId("testId-gif-format-button").click();
 		await editorWindow.getByTestId("testId-export-button").click();
 
-		// ── 6. Wait for the toast to say exported successfully
+		// ── 6. Wait for the success toast.
-		await expect(editorWindow.getByText(`GIF exported successfully to pending`)).toBeVisible({
+		await expect(editorWindow.getByText("GIF exported successfully")).toBeVisible({
 			timeout: 90_000,
 		});