diff --git a/electron/ipc/register/export.ts b/electron/ipc/register/export.ts
index 1223efee..ceb53dbf 100644
--- a/electron/ipc/register/export.ts
+++ b/electron/ipc/register/export.ts
@@ -5,6 +5,12 @@ import path from "node:path";
 import type { Readable, Writable } from "node:stream";
 import type { SaveDialogOptions } from "electron";
 import { app, BrowserWindow, dialog, ipcMain } from "electron";
+import {
+	parseCaptionSidecarPayload,
+	type CaptionSidecarPayload,
+	withCaptionSidecarMessage,
+	writeCaptionSidecarsBestEffort,
+} from "./exportCaptionSidecars";
 import {
 	closeExportStream,
 	isOwnedExportPath,
@@ -987,13 +993,19 @@ export function registerExportHandlers() {
 				}
 
 				await fs.writeFile(result.filePath, Buffer.from(videoData));
-				await writeCaptionSidecars(result.filePath, sidecarPayload);
+				const captionSidecarResult = await writeCaptionSidecarsBestEffort(
+					result.filePath,
+					sidecarPayload,
+				);
 				approveUserPath(result.filePath);
 
 				return {
 					success: true,
 					path: result.filePath,
-					message: "Video exported successfully",
+					message: withCaptionSidecarMessage(
+						"Video exported successfully",
+						captionSidecarResult,
+					),
 				};
 			} catch (error) {
 				console.error("Failed to save exported video:", error);
@@ -1029,13 +1041,19 @@ export function registerExportHandlers() {
 				const resolvedPath = path.resolve(outputPath);
 				await fs.mkdir(path.dirname(resolvedPath), { recursive: true });
 				await fs.writeFile(resolvedPath, Buffer.from(videoData));
-				await writeCaptionSidecars(resolvedPath, sidecarPayload);
+				const captionSidecarResult = await writeCaptionSidecarsBestEffort(
+					resolvedPath,
+					sidecarPayload,
+				);
 				approveUserPath(resolvedPath);
 
 				return {
 					success: true,
 					path: resolvedPath,
-					message: "Video exported successfully",
+					message: withCaptionSidecarMessage(
+						"Video exported successfully",
+						captionSidecarResult,
+					),
 					canceled: false,
 				};
 			} catch (error) {
@@ -1088,14 +1106,20 @@ export function registerExportHandlers() {
 				if (payload.outputPath) {
 					const resolvedPath = path.resolve(payload.outputPath);
 					await moveExportedTempFile(tempPath, resolvedPath);
-					await writeCaptionSidecars(resolvedPath, sidecarPayload);
 					releaseOwnedExportPath(tempPath);
+					const captionSidecarResult = await writeCaptionSidecarsBestEffort(
+						resolvedPath,
+						sidecarPayload,
+					);
 					approveUserPath(resolvedPath);
 					return {
 						success: true,
 						path: resolvedPath,
 						canceled: false,
-						message: "Video exported successfully",
+						message: withCaptionSidecarMessage(
+							"Video exported successfully",
+							captionSidecarResult,
+						),
 					};
 				}
 
@@ -1126,15 +1150,21 @@ export function registerExportHandlers() {
 				}
 
 				await moveExportedTempFile(tempPath, result.filePath);
-				await writeCaptionSidecars(result.filePath, sidecarPayload);
 				releaseOwnedExportPath(tempPath);
+				const captionSidecarResult = await writeCaptionSidecarsBestEffort(
+					result.filePath,
+					sidecarPayload,
+				);
 				approveUserPath(result.filePath);
 
 				return {
 					success: true,
 					path: result.filePath,
 					canceled: false,
-					message: "Video exported successfully",
+					message: withCaptionSidecarMessage(
+						"Video exported successfully",
+						captionSidecarResult,
+					),
 				};
 			} catch (error) {
 				console.error("Failed to finalize exported video:", error);
diff --git a/electron/ipc/register/exportCaptionSidecars.test.ts b/electron/ipc/register/exportCaptionSidecars.test.ts
new file mode 100644
index 00000000..6839e959
--- /dev/null
+++ b/electron/ipc/register/exportCaptionSidecars.test.ts
@@ -0,0 +1,112 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import {
+	parseCaptionSidecarPayload,
+	serializeSrt,
+	serializeVtt,
+	withCaptionSidecarMessage,
+	writeCaptionSidecarsBestEffort,
+} from "./exportCaptionSidecars";
+
+describe("exportCaptionSidecars", () => {
+	afterEach(() => {
+		vi.restoreAllMocks();
+	});
+
+	it("serializes SRT cues with stable numbering and timestamps", () => {
+		expect(
+			serializeSrt([
+				{
+					startMs: 1234,
+					endMs: 5678,
+					text: "Hello\nworld",
+				},
+			]),
+		).toBe("1\n00:00:01,234 --> 00:00:05,678\nHello\nworld");
+	});
+
+	it("serializes VTT cues with header and dot timestamps", () => {
+		expect(
+			serializeVtt([
+				{
+					startMs: 0,
+					endMs: 2000,
+					text: "Caption",
+				},
+			]),
+		).toBe("WEBVTT\n\n00:00:00.000 --> 00:00:02.000\nCaption");
+	});
+
+	it("drops malformed cues when parsing sidecar payloads", () => {
+		expect(
+			parseCaptionSidecarPayload({
+				format: "both",
+				cues: [
+					{ startMs: 0, endMs: 1000, text: "ok" },
+					{ startMs: 2000, endMs: 1000, text: "bad range" },
+					{ startMs: 1000, endMs: 2000, text: "   " },
+				],
+			}),
+		).toEqual({
+			format: "both",
+			cues: [{ startMs: 0, endMs: 1000, text: "ok" }],
+		});
+	});
+
+	it("returns a warning result instead of throwing when sidecar writes fail", async () => {
+		const writeFileSpy = vi.spyOn(fs, "writeFile").mockRejectedValueOnce(new Error("disk full"));
+
+		await expect(
+			writeCaptionSidecarsBestEffort("/tmp/export.mp4", {
+				format: "srt",
+				cues: [{ startMs: 0, endMs: 1000, text: "Caption" }],
+			}),
+		).resolves.toEqual({
+			wroteAny: false,
+			error: "disk full",
+		});
+
+		expect(writeFileSpy).toHaveBeenCalledTimes(1);
+	});
+
+	it("writes requested caption sidecars when the filesystem succeeds", async () => {
+		const tempDir = await fs.mkdtemp(path.join(os.tmpdir(), "recordly-sidecar-test-"));
+		const videoPath = path.join(tempDir, "clip.mp4");
+
+		try {
+			await expect(
+				writeCaptionSidecarsBestEffort(videoPath, {
+					format: "both",
+					cues: [{ startMs: 0, endMs: 1000, text: "Caption" }],
+				}),
+			).resolves.toEqual({ wroteAny: true, error: null });
+
+			await expect(fs.readFile(path.join(tempDir, "clip.srt"), "utf8")).resolves.toContain(
+				"00:00:00,000 --> 00:00:01,000",
+			);
+			await expect(fs.readFile(path.join(tempDir, "clip.vtt"), "utf8")).resolves.toContain(
+				"WEBVTT",
+			);
+		} finally {
+			await fs.rm(tempDir, { recursive: true, force: true });
+		}
+	});
+
+	it("appends a non-fatal caption warning only when sidecar writes fail", () => {
+		expect(
+			withCaptionSidecarMessage("Video exported successfully", {
+				wroteAny: false,
+				error: "disk full",
+			}),
+		).toBe("Video exported successfully Captions could not be saved alongside the video.");
+
+		expect(
+			withCaptionSidecarMessage("Video exported successfully", {
+				wroteAny: true,
+				error: null,
+			}),
+		).toBe("Video exported successfully");
+	});
+});
\ No newline at end of file
diff --git a/electron/ipc/register/exportCaptionSidecars.ts b/electron/ipc/register/exportCaptionSidecars.ts
new file mode 100644
index 00000000..6711d3bb
--- /dev/null
+++ b/electron/ipc/register/exportCaptionSidecars.ts
@@ -0,0 +1,157 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+
+export type CaptionSidecarCue = {
+	startMs: number;
+	endMs: number;
+	text: string;
+};
+
+export type CaptionSidecarPayload = {
+	format: "srt" | "vtt" | "both";
+	cues: CaptionSidecarCue[];
+};
+
+export type CaptionSidecarWriteResult = {
+	wroteAny: boolean;
+	error: string | null;
+};
+
+function toSrtTimestamp(totalMs: number): string {
+	const ms = Math.max(0, Math.round(totalMs));
+	const hours = Math.floor(ms / 3_600_000);
+	const minutes = Math.floor((ms % 3_600_000) / 60_000);
+	const seconds = Math.floor((ms % 60_000) / 1000);
+	const millis = ms % 1000;
+	return `${String(hours).padStart(2, "0")}:${String(minutes).padStart(2, "0")}:${String(seconds).padStart(2, "0")},${String(millis).padStart(3, "0")}`;
+}
+
+function toVttTimestamp(totalMs: number): string {
+	const ms = Math.max(0, Math.round(totalMs));
+	const hours = Math.floor(ms / 3_600_000);
+	const minutes = Math.floor((ms % 3_600_000) / 60_000);
+	const seconds = Math.floor((ms % 60_000) / 1000);
+	const millis = ms % 1000;
+	return `${String(hours).padStart(2, "0")}:${String(minutes).padStart(2, "0")}:${String(seconds).padStart(2, "0")}.${String(millis).padStart(3, "0")}`;
+}
+
+function normalizeCaptionSidecarCues(cues: unknown): CaptionSidecarCue[] {
+	if (!Array.isArray(cues)) {
+		return [];
+	}
+
+	return cues
+		.filter((cue): cue is CaptionSidecarCue => {
+			return (
+				typeof cue === "object" &&
+				cue !== null &&
+				typeof cue.startMs === "number" &&
+				typeof cue.endMs === "number" &&
+				typeof cue.text === "string" &&
+				Number.isFinite(cue.startMs) &&
+				Number.isFinite(cue.endMs) &&
+				cue.endMs > cue.startMs &&
+				cue.text.trim().length > 0
+			);
+		})
+		.map((cue) => ({
+			startMs: cue.startMs,
+			endMs: cue.endMs,
+			text: cue.text.replace(/\r\n/g, "\n").trim(),
+		}));
+}
+
+export function parseCaptionSidecarPayload(payload: unknown): CaptionSidecarPayload | null {
+	if (typeof payload !== "object" || payload === null) {
+		return null;
+	}
+
+	const candidate = payload as {
+		format?: unknown;
+		cues?: unknown;
+	};
+
+	const format =
+		candidate.format === "srt" || candidate.format === "vtt" || candidate.format === "both"
+			? candidate.format
+			: null;
+	if (!format) {
+		return null;
+	}
+
+	const cues = normalizeCaptionSidecarCues(candidate.cues);
+	if (cues.length === 0) {
+		return null;
+	}
+
+	return { format, cues };
+}
+
+export function serializeSrt(cues: CaptionSidecarCue[]): string {
+	return cues
+		.map((cue, index) => {
+			return `${index + 1}\n${toSrtTimestamp(cue.startMs)} --> ${toSrtTimestamp(cue.endMs)}\n${cue.text}`;
+		})
+		.join("\n\n");
+}
+
+export function serializeVtt(cues: CaptionSidecarCue[]): string {
+	const body = cues
+		.map((cue) => {
+			return `${toVttTimestamp(cue.startMs)} --> ${toVttTimestamp(cue.endMs)}\n${cue.text}`;
+		})
+		.join("\n\n");
+	return `WEBVTT\n\n${body}`;
+}
+
+export async function writeCaptionSidecars(
+	videoPath: string,
+	payload: CaptionSidecarPayload | null,
+) {
+	if (!payload) {
+		return;
+	}
+
+	const parsed = path.parse(videoPath);
+	const basePath = path.join(parsed.dir, parsed.name);
+
+	if (payload.format === "srt" || payload.format === "both") {
+		await fs.writeFile(`${basePath}.srt`, serializeSrt(payload.cues), "utf8");
+	}
+
+	if (payload.format === "vtt" || payload.format === "both") {
+		await fs.writeFile(`${basePath}.vtt`, serializeVtt(payload.cues), "utf8");
+	}
+}
+
+export async function writeCaptionSidecarsBestEffort(
+	videoPath: string,
+	payload: CaptionSidecarPayload | null,
+): Promise<CaptionSidecarWriteResult> {
+	if (!payload) {
+		return { wroteAny: false, error: null };
+	}
+
+	try {
+		await writeCaptionSidecars(videoPath, payload);
+		return { wroteAny: true, error: null };
+	} catch (error) {
+		const message = error instanceof Error ? error.message : String(error);
+		console.warn("[export] Failed to write caption sidecars:", {
+			videoPath,
+			message,
+		});
+		return { wroteAny: false, error: message };
+	}
+}
+
+export function withCaptionSidecarMessage(
+	baseMessage: string,
+	captionSidecarResult: CaptionSidecarWriteResult,
+) {
+	if (!captionSidecarResult.error) {
+		return baseMessage;
+	}
+
+	return `${baseMessage} Captions could not be saved alongside the video.`;
+}
\ No newline at end of file
diff --git a/electron/ipc/register/sourceMapping.test.ts b/electron/ipc/register/sourceMapping.test.ts
new file mode 100644
index 00000000..d0b68e75
--- /dev/null
+++ b/electron/ipc/register/sourceMapping.test.ts
@@ -0,0 +1,50 @@
+import { describe, expect, it } from "vitest";
+
+import {
+	getScreenSourceIdForDisplay,
+	LINUX_PORTAL_SCREEN_SOURCE_ID,
+} from "./sourceMapping";
+
+describe("getScreenSourceIdForDisplay", () => {
+	it("keeps the live Electron screen source when one is available", () => {
+		expect(
+			getScreenSourceIdForDisplay({
+				displayId: "42",
+				matchedSourceId: "screen:42:0",
+				platform: "linux",
+			}),
+		).toBe("screen:42:0");
+	});
+
+	it("routes unmatched Linux Wayland screens through the portal sentinel", () => {
+		expect(
+			getScreenSourceIdForDisplay({
+				displayId: "42",
+				env: { XDG_SESSION_TYPE: "wayland", WAYLAND_DISPLAY: "wayland-0" },
+				matchedSourceId: null,
+				platform: "linux",
+			}),
+		).toBe(LINUX_PORTAL_SCREEN_SOURCE_ID);
+	});
+
+	it("keeps unmatched Linux X11 screens on the explicit fallback id", () => {
+		expect(
+			getScreenSourceIdForDisplay({
+				displayId: "42",
+				env: { XDG_SESSION_TYPE: "x11", DISPLAY: ":0" },
+				matchedSourceId: null,
+				platform: "linux",
+			}),
+		).toBe("screen:fallback:42");
+	});
+
+	it("keeps non-Linux unmatched screens on the explicit fallback id", () => {
+		expect(
+			getScreenSourceIdForDisplay({
+				displayId: "42",
+				matchedSourceId: undefined,
+				platform: "win32",
+			}),
+		).toBe("screen:fallback:42");
+	});
+});
\ No newline at end of file
diff --git a/electron/ipc/register/sourceMapping.ts b/electron/ipc/register/sourceMapping.ts
new file mode 100644
index 00000000..a61b4cf7
--- /dev/null
+++ b/electron/ipc/register/sourceMapping.ts
@@ -0,0 +1,35 @@
+export const LINUX_PORTAL_SCREEN_SOURCE_ID = "screen:linux-portal";
+
+export function isLikelyLinuxWaylandSession(env: NodeJS.ProcessEnv) {
+	const sessionType = env.XDG_SESSION_TYPE?.trim().toLowerCase();
+	if (sessionType === "wayland") {
+		return true;
+	}
+	if (sessionType === "x11") {
+		return false;
+	}
+
+	return Boolean(env.WAYLAND_DISPLAY);
+}
+
+export function getScreenSourceIdForDisplay({
+	displayId,
+	env = process.env,
+	matchedSourceId,
+	platform,
+}: {
+	displayId: string;
+	env?: NodeJS.ProcessEnv;
+	matchedSourceId?: string | null;
+	platform: NodeJS.Platform | string;
+}) {
+	if (matchedSourceId) {
+		return matchedSourceId;
+	}
+
+	if (platform === "linux" && isLikelyLinuxWaylandSession(env)) {
+		return LINUX_PORTAL_SCREEN_SOURCE_ID;
+	}
+
+	return `screen:fallback:${displayId}`;
+}
\ No newline at end of file
diff --git a/electron/ipc/register/sources.ts b/electron/ipc/register/sources.ts
index 4ba6b35a..33c9ee74 100644
--- a/electron/ipc/register/sources.ts
+++ b/electron/ipc/register/sources.ts
@@ -6,6 +6,7 @@ import { selectedSource, setSelectedSource } from "../state";
 import type { SelectedSource } from "../types";
 import { getScreen, parseWindowId } from "../utils";
 import { getDisplayBoundsForSource, getDisplayWorkAreaForSource } from "../recording/ffmpeg";
+import { getScreenSourceIdForDisplay } from "./sourceMapping";
 import {
 	getNativeMacWindowSources,
 	resolveMacWindowBounds,
@@ -125,7 +126,12 @@ export function registerSourceHandlers({
 					: `Screen ${index + 1}`;
 
 			return {
-				id: matchedSource?.id ?? `screen:fallback:${displayId}`,
+				id: getScreenSourceIdForDisplay({
+					displayId,
+					env: process.env,
+					matchedSourceId: matchedSource?.id,
+					platform: process.platform,
+				}),
 				name: displayName,
 				originalName: matchedSource?.name ?? displayName,
 				display_id: displayId,
diff --git a/package-lock.json b/package-lock.json
index a96759f5..a255b232 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
 	"name": "recordly",
-	"version": "1.3.3",
+	"version": "1.3.4",
 	"lockfileVersion": 3,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "recordly",
-			"version": "1.3.3",
+			"version": "1.3.4",
 			"hasInstallScript": true,
 			"dependencies": {
 				"@phosphor-icons/react": "^2.1.10",
diff --git a/package.json b/package.json
index 7d6c1285..6357c666 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
 		"url": "https://github.com/webadderallorg/Recordly/issues"
 	},
 	"private": true,
-	"version": "1.3.3",
+	"version": "1.3.4",
 	"type": "module",
 	"scripts": {
 		"dev": "vite --config vite.config.ts",
diff --git a/src/components/video-editor/SettingsPanel.tsx b/src/components/video-editor/SettingsPanel.tsx
index fce5f2b9..41167dce 100644
--- a/src/components/video-editor/SettingsPanel.tsx
+++ b/src/components/video-editor/SettingsPanel.tsx
@@ -73,6 +73,7 @@ import type {
 	ZoomTransitionEasing,
 } from "./types";
 import {
+	ADVANCED_VERTICAL_PADDING_MAX,
 	DEFAULT_AUTO_CAPTION_SETTINGS,
 	DEFAULT_CROP_REGION,
 	DEFAULT_CURSOR_CLICK_BOUNCE,
@@ -2413,7 +2414,7 @@ export function SettingsPanel({
 								value={padding.top}
 								defaultValue={DEFAULT_PADDING.top}
 								min={0}
-								max={100}
+								max={ADVANCED_VERTICAL_PADDING_MAX}
 								step={1}
 								onChange={(v) => handlePaddingSideChange("top", v)}
 								formatValue={(v) => `${v}%`}
@@ -2424,7 +2425,7 @@ export function SettingsPanel({
 								value={padding.bottom}
 								defaultValue={DEFAULT_PADDING.bottom}
 								min={0}
-								max={100}
+								max={ADVANCED_VERTICAL_PADDING_MAX}
 								step={1}
 								onChange={(v) => handlePaddingSideChange("bottom", v)}
 								formatValue={(v) => `${v}%`}
diff --git a/src/components/video-editor/projectPersistence.test.ts b/src/components/video-editor/projectPersistence.test.ts
new file mode 100644
index 00000000..575c3b67
--- /dev/null
+++ b/src/components/video-editor/projectPersistence.test.ts
@@ -0,0 +1,46 @@
+import { describe, expect, it } from "vitest";
+
+import { normalizeProjectEditor } from "./projectPersistence";
+import { ADVANCED_VERTICAL_PADDING_MAX } from "./types";
+
+describe("normalizeProjectEditor", () => {
+	it("preserves the extended advanced vertical padding range", () => {
+		const editor = normalizeProjectEditor({
+			padding: {
+				top: 240,
+				bottom: ADVANCED_VERTICAL_PADDING_MAX,
+				left: 22,
+				right: 22,
+				linked: false,
+			},
+		});
+
+		expect(editor.padding).toMatchObject({
+			top: 240,
+			bottom: ADVANCED_VERTICAL_PADDING_MAX,
+			left: 22,
+			right: 22,
+			linked: false,
+		});
+	});
+
+	it("keeps linked padding clamped to the original range", () => {
+		const editor = normalizeProjectEditor({
+			padding: {
+				top: ADVANCED_VERTICAL_PADDING_MAX,
+				bottom: ADVANCED_VERTICAL_PADDING_MAX,
+				left: ADVANCED_VERTICAL_PADDING_MAX,
+				right: ADVANCED_VERTICAL_PADDING_MAX,
+				linked: true,
+			},
+		});
+
+		expect(editor.padding).toMatchObject({
+			top: 100,
+			bottom: 100,
+			left: 100,
+			right: 100,
+			linked: true,
+		});
+	});
+});
diff --git a/src/components/video-editor/projectPersistence.ts b/src/components/video-editor/projectPersistence.ts
index 704371a6..1d4be3d8 100644
--- a/src/components/video-editor/projectPersistence.ts
+++ b/src/components/video-editor/projectPersistence.ts
@@ -22,6 +22,7 @@ import { DEFAULT_WALLPAPER_PATH } from "@/lib/wallpapers";
 import { ASPECT_RATIOS, type AspectRatio, isCustomAspectRatio } from "@/utils/aspectRatioUtils";
 import { CURSOR_MOTION_PRESETS, resolveCursorMotionPresetId } from "./cursorMotionPresets";
 import {
+	ADVANCED_VERTICAL_PADDING_MAX,
 	type AnnotationRegion,
 	type AudioRegion,
 	type AutoCaptionAnimation,
@@ -950,14 +951,17 @@ export function normalizeProjectEditor(editor: Partial<ProjectEditorState>): Pro
 			const p = editor.padding;
 			if (p && typeof p === "object") {
 				const linked = typeof p.linked === "boolean" ? p.linked : true;
-				const top = isFiniteNumber(p.top) ? clamp(p.top, 0, 100) : DEFAULT_PADDING.top;
+				const verticalMax = linked ? 100 : ADVANCED_VERTICAL_PADDING_MAX;
+				const top = isFiniteNumber(p.top)
+					? clamp(p.top, 0, verticalMax)
+					: DEFAULT_PADDING.top;
 				if (linked) {
 					return { top, bottom: top, left: top, right: top, linked: true };
 				}
 				return {
 					top,
 					bottom: isFiniteNumber(p.bottom)
-						? clamp(p.bottom, 0, 100)
+						? clamp(p.bottom, 0, verticalMax)
 						: DEFAULT_PADDING.bottom,
 					left: isFiniteNumber(p.left) ? clamp(p.left, 0, 100) : DEFAULT_PADDING.left,
 					right: isFiniteNumber(p.right) ? clamp(p.right, 0, 100) : DEFAULT_PADDING.right,
diff --git a/src/components/video-editor/types.ts b/src/components/video-editor/types.ts
index 9bc401d5..91d67624 100644
--- a/src/components/video-editor/types.ts
+++ b/src/components/video-editor/types.ts
@@ -497,6 +497,8 @@ export const DEFAULT_CROP_REGION: CropRegion = {
 	height: 1,
 };
 
+export const ADVANCED_VERTICAL_PADDING_MAX = 250;
+
 export interface Padding {
 	top: number;
 	bottom: number;
diff --git a/src/components/video-editor/videoPlayback/layoutUtils.test.ts b/src/components/video-editor/videoPlayback/layoutUtils.test.ts
index 39d21f03..a93db03f 100644
--- a/src/components/video-editor/videoPlayback/layoutUtils.test.ts
+++ b/src/components/video-editor/videoPlayback/layoutUtils.test.ts
@@ -1,5 +1,59 @@
 import { describe, expect, it } from "vitest";
-import { scalePreviewBorderRadius } from "./layoutUtils";
+
+import { ADVANCED_VERTICAL_PADDING_MAX } from "../types";
+import { computePaddedLayout, scalePreviewBorderRadius } from "./layoutUtils";
+
+const BASE_LAYOUT_PARAMS = {
+	width: 1000,
+	height: 1000,
+	cropRegion: { x: 0, y: 0, width: 1, height: 1 },
+	videoWidth: 1000,
+	videoHeight: 1000,
+};
+
+describe("computePaddedLayout", () => {
+	it("allows advanced bottom padding to pin the video to the top edge", () => {
+		const layout = computePaddedLayout({
+			...BASE_LAYOUT_PARAMS,
+			padding: {
+				top: 0,
+				bottom: ADVANCED_VERTICAL_PADDING_MAX,
+				left: 0,
+				right: 0,
+				linked: false,
+			},
+		});
+
+		expect(layout.centerOffsetY).toBeCloseTo(0);
+	});
+
+	it("allows advanced top padding to pin the video to the bottom edge", () => {
+		const layout = computePaddedLayout({
+			...BASE_LAYOUT_PARAMS,
+			padding: {
+				top: ADVANCED_VERTICAL_PADDING_MAX,
+				bottom: 0,
+				left: 0,
+				right: 0,
+				linked: false,
+			},
+		});
+
+		expect(layout.centerOffsetY + layout.croppedDisplayHeight).toBeCloseTo(
+			BASE_LAYOUT_PARAMS.height,
+		);
+	});
+
+	it("preserves linked padding centering behavior", () => {
+		const layout = computePaddedLayout({
+			...BASE_LAYOUT_PARAMS,
+			padding: { top: 20, bottom: 20, left: 20, right: 20, linked: true },
+		});
+
+		expect(layout.centerOffsetY).toBeCloseTo(40);
+		expect(layout.centerOffsetY + layout.croppedDisplayHeight).toBeCloseTo(960);
+	});
+});
 
 describe("scalePreviewBorderRadius", () => {
 	it("matches export scaling against the logical preview size", () => {
@@ -13,4 +67,4 @@ describe("scalePreviewBorderRadius", () => {
 		expect(scalePreviewBorderRadius(960, 0, 16)).toBe(0);
 		expect(scalePreviewBorderRadius(960, 540, -8)).toBe(0);
 	});
-});
\ No newline at end of file
+});
diff --git a/src/components/video-editor/videoPlayback/layoutUtils.ts b/src/components/video-editor/videoPlayback/layoutUtils.ts
index 3cce0cd3..b93ef19d 100644
--- a/src/components/video-editor/videoPlayback/layoutUtils.ts
+++ b/src/components/video-editor/videoPlayback/layoutUtils.ts
@@ -1,16 +1,12 @@
 import { Application, Graphics, Sprite } from "pixi.js";
 import { drawSquircleOnGraphics } from "@/lib/geometry/squircle";
-import type { CropRegion, Padding } from "../types";
+import { ADVANCED_VERTICAL_PADDING_MAX, type CropRegion, type Padding } from "../types";
 
 export const PADDING_SCALE_FACTOR = 0.2;
 export const BASE_PREVIEW_WIDTH = 1920;
 export const BASE_PREVIEW_HEIGHT = 1080;
 
-export function scalePreviewBorderRadius(
-	width: number,
-	height: number,
-	borderRadius = 0,
-): number {
+export function scalePreviewBorderRadius(width: number, height: number, borderRadius = 0): number {
 	if (width <= 0 || height <= 0) {
 		return 0;
 	}
@@ -23,12 +19,7 @@ export function isZeroPadding(padding: Padding | number): boolean {
 	if (typeof padding === "number") {
 		return padding === 0;
 	}
-	return (
-		padding.top === 0 &&
-		padding.bottom === 0 &&
-		padding.left === 0 &&
-		padding.right === 0
-	);
+	return padding.top === 0 && padding.bottom === 0 && padding.left === 0 && padding.right === 0;
 }
 
 export interface PaddedLayoutResult {
@@ -64,13 +55,21 @@ export function computePaddedLayout(params: {
 			? { top: padding, bottom: padding, left: padding, right: padding }
 			: padding;
 
-	// Padding is a percentage (0-100)
-	// Clamp to ensure we don't have overlapping padding that exceeds 100% of a dimension
-	const clampPercent = (v: number) => Math.min(100, Math.max(0, v));
-	const leftPadFrac = (clampPercent(p.left) / 100) * PADDING_SCALE_FACTOR;
-	const rightPadFrac = (clampPercent(p.right) / 100) * PADDING_SCALE_FACTOR;
-	const topPadFrac = (clampPercent(p.top) / 100) * PADDING_SCALE_FACTOR;
-	const bottomPadFrac = (clampPercent(p.bottom) / 100) * PADDING_SCALE_FACTOR;
+	// Padding is a percentage. Linked padding keeps the original 0-100 scaling
+	// behavior; advanced vertical padding gets extra range for positioning.
+	const isAdvancedPadding = typeof padding !== "number" && padding.linked === false;
+	const clampPercent = (v: number, max = 100) => Math.min(max, Math.max(0, v));
+	const leftPercent = clampPercent(p.left);
+	const rightPercent = clampPercent(p.right);
+	const topPercent = clampPercent(p.top, isAdvancedPadding ? ADVANCED_VERTICAL_PADDING_MAX : 100);
+	const bottomPercent = clampPercent(
+		p.bottom,
+		isAdvancedPadding ? ADVANCED_VERTICAL_PADDING_MAX : 100,
+	);
+	const leftPadFrac = (leftPercent / 100) * PADDING_SCALE_FACTOR;
+	const rightPadFrac = (rightPercent / 100) * PADDING_SCALE_FACTOR;
+	const topPadFrac = (Math.min(topPercent, 100) / 100) * PADDING_SCALE_FACTOR;
+	const bottomPadFrac = (Math.min(bottomPercent, 100) / 100) * PADDING_SCALE_FACTOR;
 
 	const availableFracW = Math.max(0, 1.0 - leftPadFrac - rightPadFrac);
 	const availableFracH = Math.max(0, 1.0 - topPadFrac - bottomPadFrac);
@@ -103,17 +102,24 @@ export function computePaddedLayout(params: {
 	const fullFrameDisplayH = fullFrameVideoH * scale;
 
 	const availableCenterX = leftPadFrac * width + maxDisplayWidth / 2;
-	const availableCenterY = topPadFrac * height + maxDisplayHeight / 2;
+	const availableCenterY = isAdvancedPadding
+		? (() => {
+				const verticalTravel = Math.max(0, height - fullFrameDisplayH);
+				const centeredOffsetY = verticalTravel / 2;
+				const directionalOffsetY =
+					centeredOffsetY +
+					((topPercent - bottomPercent) / ADVANCED_VERTICAL_PADDING_MAX) *
+						centeredOffsetY;
+				const frameOffsetY = Math.min(verticalTravel, Math.max(0, directionalOffsetY));
+				return frameOffsetY + fullFrameDisplayH / 2;
+			})()
+		: topPadFrac * height + maxDisplayHeight / 2;
 
 	const frameCenterX = availableCenterX - fullFrameDisplayW / 2;
 	const frameCenterY = availableCenterY - fullFrameDisplayH / 2;
 
-	const centerOffsetX = insets
-		? frameCenterX + insets.left * fullFrameDisplayW
-		: frameCenterX;
-	const centerOffsetY = insets
-		? frameCenterY + insets.top * fullFrameDisplayH
-		: frameCenterY;
+	const centerOffsetX = insets ? frameCenterX + insets.left * fullFrameDisplayW : frameCenterX;
+	const centerOffsetY = insets ? frameCenterY + insets.top * fullFrameDisplayH : frameCenterY;
 
 	const spriteX = centerOffsetX - crop.x * fullVideoDisplayWidth;
 	const spriteY = centerOffsetY - crop.y * fullVideoDisplayHeight;
diff --git a/src/components/video-editor/videoPlayback/uploadedCursorAssets.ts b/src/components/video-editor/videoPlayback/uploadedCursorAssets.ts
index 38faffba..d017d2d7 100644
--- a/src/components/video-editor/videoPlayback/uploadedCursorAssets.ts
+++ b/src/components/video-editor/videoPlayback/uploadedCursorAssets.ts
@@ -1,6 +1,6 @@
 import macosClosedHandUrl from "../../../assets/cursors/macos/closedhand-1__50-50.svg";
 import macosCrosshairUrl from "../../../assets/cursors/macos/crosshair-1__50-50.svg";
-import macosTextUrl from "../../../assets/cursors/macos/ibeam-1__50-50.svg";
+import macosTextUrl from "../../../assets/cursors/macos/ibeamstroke-1__50-50.svg";
 import macosNotAllowedUrl from "../../../assets/cursors/macos/notallowed-1__23-0.svg";
 import macosOpenHandUrl from "../../../assets/cursors/macos/openhand-1__50-50.svg";
 import macosArrowUrl from "../../../assets/cursors/macos/pointer-1__34-24.svg";
diff --git a/src/hooks/useScreenRecorder.test.ts b/src/hooks/useScreenRecorder.test.ts
index 85811467..d74e884c 100644
--- a/src/hooks/useScreenRecorder.test.ts
+++ b/src/hooks/useScreenRecorder.test.ts
@@ -164,8 +164,12 @@ describe("shouldUseNativeWindowsCaptureForSource", () => {
 		expect(shouldUseNativeWindowsCaptureForSource({ id: "screen:101:0" })).toBe(true);
 	});
 
-	it("routes window sources through browser capture", () => {
-		expect(shouldUseNativeWindowsCaptureForSource({ id: "window:123456:0" })).toBe(false);
+	it("keeps native Windows capture on window sources", () => {
+		expect(shouldUseNativeWindowsCaptureForSource({ id: "window:123456:0" })).toBe(true);
+	});
+
+	it("keeps browser capture for non-desktop sources", () => {
+		expect(shouldUseNativeWindowsCaptureForSource({ id: "browser-tab:abc" })).toBe(false);
 	});
 });
 
diff --git a/src/hooks/useScreenRecorder.ts b/src/hooks/useScreenRecorder.ts
index a382ea3d..c5cd7005 100644
--- a/src/hooks/useScreenRecorder.ts
+++ b/src/hooks/useScreenRecorder.ts
@@ -213,7 +213,10 @@ export function resolveBrowserCaptureCursorPolicy({
 export function shouldUseNativeWindowsCaptureForSource(
 	source: Pick<ProcessedDesktopSource, "id"> | null | undefined,
 ): boolean {
-	return source?.id?.startsWith("screen:") === true;
+	return (
+		source?.id?.startsWith("screen:") === true ||
+		source?.id?.startsWith("window:") === true
+	);
 }
 
 export function createProcessedMicrophoneConstraints(