fix: just use one test

package-lock.json

@@ -7222,13 +7222,15 @@
 			"license": "MIT"
 		},
 		"node_modules/baseline-browser-mapping": {
-			"version": "2.8.15",
-			"resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.8.15.tgz",
-			"integrity": "sha512-qsJ8/X+UypqxHXN75M7dF88jNK37dLBRW7LeUzCPz+TNs37G8cfWy9nWzS+LS//g600zrt2le9KuXt0rWfDz5Q==",
+			"version": "2.10.21",
+			"resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.10.21.tgz",
+			"integrity": "sha512-Q+rUQ7Uz8AHM7DEaNdwvfFCTq7a43lNTzuS94eiWqwyxfV/wJv+oUivef51T91mmRY4d4A1u9rcSvkeufCVXlA==",
 			"dev": true,
-			"license": "Apache-2.0",
 			"bin": {
-				"baseline-browser-mapping": "dist/cli.js"
+				"baseline-browser-mapping": "dist/cli.cjs"
+			},
+			"engines": {
+				"node": ">=6.0.0"
 			}
 		},
 		"node_modules/bcrypt-pbkdf": {

src/lib/exporter/gifExporter.browser.test.ts

@@ -1,6 +1,5 @@
 import { describe, expect, it } from "vitest";
 import sampleVideoUrl from "../../../tests/fixtures/sample.webm?url";
-import inflatedDurationVideoUrl from "../../../tests/fixtures/sample-inflated-duration.webm?url";
 import { GifExporter } from "./gifExporter";
 import type { ExportProgress } from "./types";
 
@@ -41,33 +40,4 @@ describe("GifExporter (real browser)", () => {
 		expect(finalizing.length).toBeGreaterThan(0);
 		expect(finalizing.at(-1)!.percentage).toBe(100);
 	});
-
-	it("exports successfully when container duration is inflated beyond actual content", async () => {
-		const exporter = new GifExporter({
-			videoUrl: inflatedDurationVideoUrl,
-			width: 320,
-			height: 180,
-			frameRate: 15,
-			loop: true,
-			sizePreset: "medium",
-			wallpaper: "#1a1a2e",
-			zoomRegions: [],
-			showShadow: false,
-			shadowIntensity: 0,
-			showBlur: false,
-			cropRegion: { x: 0, y: 0, width: 1, height: 1 },
-			onProgress: () => {
-				/**noop**/
-			},
-		});
-
-		const result = await exporter.export();
-
-		expect(result.success, result.error).toBe(true);
-		expect(result.blob).toBeInstanceOf(Blob);
-
-		const buf = await result.blob!.arrayBuffer();
-		const header = new TextDecoder().decode(new Uint8Array(buf, 0, 6));
-		expect(header).toMatch(/^GIF8[79]a/);
-	});
 });

src/lib/exporter/streamingDecoder.test.ts

@@ -83,4 +83,18 @@ describe("shouldFailDecodeEndedEarly", () => {
 			}),
 		).toBe(true);
 	});
+
+	it("does not fail when decoder reached stream end but container tail is large (inflated metadata)", () => {
+		// Real case: ~20min video where container reports 1234s but actual stream
+		// ends at 1226s. Decoder correctly stops at 1226s (= streamDurationSec).
+		// The 8s tail is container metadata inflation, not a real decode failure.
+		expect(
+			shouldFailDecodeEndedEarly({
+				cancelled: false,
+				lastDecodedFrameSec: 1226,
+				requiredEndSec: 1234,
+				streamDurationSec: 1226,
+			}),
+		).toBe(false);
+	});
 });

src/lib/exporter/streamingDecoder.ts

@@ -129,11 +129,8 @@ export function shouldFailDecodeEndedEarly({
 	const decodedNearStreamEnd =
 		Math.abs(lastDecodedFrameSec - streamDurationSec) <= STREAM_DURATION_MATCH_TOLERANCE_SEC;
 
-	if (
-		decodedNearStreamEnd &&
-		metadataTailSec > 0 &&
-		metadataTailSec <= METADATA_TAIL_TOLERANCE_SEC
-	) {
+	const maxTailSec = Math.max(METADATA_TAIL_TOLERANCE_SEC, requiredEndSec * 0.01);
+	if (decodedNearStreamEnd && metadataTailSec > 0 && metadataTailSec <= maxTailSec) {
 		return false;
 	}
 
@@ -246,13 +243,14 @@ export class StreamingVideoDecoder {
 		const hintedDurationSec = Math.max(containerDurationSec, streamDurationSec, 0);
 		const scanEndSec =
 			hintedDurationSec > 0 ? hintedDurationSec + 0.5 : SCAN_UNBOUNDED_FALLBACK_SEC;
-		let maxPacketTimestampUs = 0;
+		let maxPacketEndUs = 0;
 		const scanReader = this.demuxer.read("video", 0, scanEndSec).getReader();
 		try {
 			while (true) {
 				const { done, value } = await scanReader.read();
 				if (done || !value) break;
-				if (value.timestamp > maxPacketTimestampUs) maxPacketTimestampUs = value.timestamp;
+				const endUs = value.timestamp + (value.duration ?? 0);
+				if (endUs > maxPacketEndUs) maxPacketEndUs = endUs;
 			}
 		} finally {
 			try {
@@ -261,12 +259,7 @@ export class StreamingVideoDecoder {
 				/* already closed */
 			}
 		}
-		// Use last frame's timestamp + one frame duration. The `duration` field on the last
-		// packet in a WebM container is frequently inflated by the demuxer to match the
-		// container's declared end, causing validateDuration to see no divergence and
-		// propagate a duration that the decoder can never actually reach.
-		const typicalFrameDurationUs = Math.ceil(1_000_000 / frameRate);
-		const scannedDuration = (maxPacketTimestampUs + typicalFrameDurationUs) / 1_000_000;
+		const scannedDuration = maxPacketEndUs / 1_000_000;
 		const validatedDuration = validateDuration(mediaInfo.duration, scannedDuration);
 
 		this.metadata = {

src/lib/exporter/videoExporter.browser.test.ts

@@ -1,6 +1,5 @@
 import { describe, expect, it } from "vitest";
 import sampleVideoUrl from "../../../tests/fixtures/sample.webm?url";
-import inflatedDurationVideoUrl from "../../../tests/fixtures/sample-inflated-duration.webm?url";
 import type { ExportProgress } from "./types";
 import { VideoExporter } from "./videoExporter";
 
@@ -41,33 +40,4 @@ describe("VideoExporter (real browser)", () => {
 		expect(finalizing.length).toBeGreaterThan(0);
 		expect(finalizing.at(-1)!.percentage).toBe(100);
 	});
-
-	it("exports successfully when container duration is inflated beyond actual content", async () => {
-		const exporter = new VideoExporter({
-			videoUrl: inflatedDurationVideoUrl,
-			width: 320,
-			height: 180,
-			frameRate: 15,
-			bitrate: 1_000_000,
-			wallpaper: "#1a1a2e",
-			zoomRegions: [],
-			showShadow: false,
-			shadowIntensity: 0,
-			showBlur: false,
-			cropRegion: { x: 0, y: 0, width: 1, height: 1 },
-			onProgress: () => {
-				/**noop**/
-			},
-		});
-
-		const result = await exporter.export();
-
-		expect(result.success, result.error).toBe(true);
-		expect(result.blob).toBeInstanceOf(Blob);
-
-		const buf = await result.blob!.arrayBuffer();
-		const bytes = new Uint8Array(buf);
-		const ftyp = new TextDecoder().decode(bytes.slice(4, 8));
-		expect(ftyp).toBe("ftyp");
-	});
 });

vitest.config.ts

@@ -4,8 +4,9 @@ import { defineConfig } from "vitest/config";
 export default defineConfig({
 	test: {
 		globals: true,
-		environment: "jsdom",
+		environment: "node",
 		include: ["src/**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}"],
+		exclude: ["src/**/*.browser.test.{ts,tsx}", "node_modules"],
 	},
 	resolve: {
 		alias: {