fix: clear webcam position for non-pip layouts

src/components/video-editor/projectPersistence.test.ts

@@ -82,6 +82,15 @@ describe("projectPersistence media compatibility", () => {
 			}).webcamLayoutPreset,
 		).toBe("picture-in-picture");
 	});
+
+	it("clears webcamPosition when the normalized preset is not picture in picture", () => {
+		expect(
+			normalizeProjectEditor({
+				webcamLayoutPreset: "dual-frame",
+				webcamPosition: { cx: 0.2, cy: 0.8 },
+			}).webcamPosition,
+		).toBeNull();
+	});
 });
 
 it("creates stable snapshots for identical project state", () => {

src/components/video-editor/projectPersistence.ts

@@ -202,6 +202,17 @@ export function normalizeProjectEditor(editor: Partial<ProjectEditorState>): Pro
 						? DEFAULT_WEBCAM_LAYOUT_PRESET
 						: editor.webcamLayoutPreset
 					: DEFAULT_WEBCAM_LAYOUT_PRESET;
+	const normalizedWebcamPosition: WebcamPosition | null =
+		normalizedWebcamLayoutPreset === "picture-in-picture" &&
+		editor.webcamPosition &&
+		typeof editor.webcamPosition === "object" &&
+		isFiniteNumber((editor.webcamPosition as WebcamPosition).cx) &&
+		isFiniteNumber((editor.webcamPosition as WebcamPosition).cy)
+			? {
+					cx: clamp((editor.webcamPosition as WebcamPosition).cx, 0, 1),
+					cy: clamp((editor.webcamPosition as WebcamPosition).cy, 0, 1),
+				}
+			: DEFAULT_WEBCAM_POSITION;
 
 	const normalizedZoomRegions: ZoomRegion[] = Array.isArray(editor.zoomRegions)
 		? editor.zoomRegions
@@ -426,16 +437,7 @@ export function normalizeProjectEditor(editor: Partial<ProjectEditorState>): Pro
 			typeof editor.webcamSizePreset === "number" && isFiniteNumber(editor.webcamSizePreset)
 				? Math.max(10, Math.min(50, editor.webcamSizePreset))
 				: DEFAULT_WEBCAM_SIZE_PRESET,
-		webcamPosition:
-			editor.webcamPosition &&
-			typeof editor.webcamPosition === "object" &&
-			isFiniteNumber((editor.webcamPosition as WebcamPosition).cx) &&
-			isFiniteNumber((editor.webcamPosition as WebcamPosition).cy)
-				? {
-						cx: clamp((editor.webcamPosition as WebcamPosition).cx, 0, 1),
-						cy: clamp((editor.webcamPosition as WebcamPosition).cy, 0, 1),
-					}
-				: DEFAULT_WEBCAM_POSITION,
+		webcamPosition: normalizedWebcamPosition,
 		exportQuality:
 			editor.exportQuality === "medium" || editor.exportQuality === "source"
 				? editor.exportQuality