feat: add native Windows recorder helper

src/lib/cursor/nativeCursor.ts

@@ -54,8 +54,8 @@ const PRETTY_NATIVE_CURSOR_ASSETS: Partial<Record<NativeCursorType, PrettyNative
 		imageDataUrl: arrowUrl,
 		width: 32,
 		height: 32,
-		hotspotX: 5.8,
-		hotspotY: 3.2,
+		hotspotX: 16.25,
+		hotspotY: 15.03,
 	},
 	text: {
 		imageDataUrl: textUrl,
@@ -67,9 +67,9 @@ const PRETTY_NATIVE_CURSOR_ASSETS: Partial<Record<NativeCursorType, PrettyNative
 	pointer: {
 		imageDataUrl: pointerUrl,
 		width: 32,
-		height: 32,
-		hotspotX: 11.8,
-		hotspotY: 2.6,
+		height: 33,
+		hotspotX: 16.65,
+		hotspotY: 14.24,
 	},
 	crosshair: {
 		imageDataUrl: crosshairUrl,
@@ -131,15 +131,15 @@ const PRETTY_NATIVE_CURSOR_ASSETS: Partial<Record<NativeCursorType, PrettyNative
 		imageDataUrl: appStartingUrl,
 		width: 32,
 		height: 32,
-		hotspotX: 5.8,
-		hotspotY: 3.2,
+		hotspotX: 7.25,
+		hotspotY: 4.03,
 	},
 	help: {
 		imageDataUrl: helpUrl,
 		width: 32,
 		height: 32,
-		hotspotX: 5.8,
-		hotspotY: 3.2,
+		hotspotX: 7.25,
+		hotspotY: 4.03,
 	},
 	"up-arrow": {
 		imageDataUrl: upArrowUrl,

src/lib/exporter/audioEncoder.ts

@@ -3,6 +3,7 @@ import type { SpeedRegion, TrimRegion } from "@/components/video-editor/types";
 import type { VideoMuxer } from "./muxer";
 
 const AUDIO_BITRATE = 128_000;
+const EXPORT_AUDIO_CODEC = "mp4a.40.2";
 const DECODE_BACKPRESSURE_LIMIT = 20;
 const MIN_SPEED_REGION_DELTA_MS = 0.0001;
 const SEEK_TIMEOUT_MS = 5_000;
@@ -138,7 +139,7 @@ export class AudioProcessor {
 		const channels = audioConfig.numberOfChannels || 2;
 
 		const encodeConfig: AudioEncoderConfig = {
-			codec: "opus",
+			codec: EXPORT_AUDIO_CODEC,
 			sampleRate,
 			numberOfChannels: channels,
 			bitrate: AUDIO_BITRATE,
@@ -146,7 +147,7 @@ export class AudioProcessor {
 
 		const encodeSupport = await AudioEncoder.isConfigSupported(encodeConfig);
 		if (!encodeSupport.supported) {
-			console.warn("[AudioProcessor] Opus encoding not supported, skipping audio");
+			console.warn("[AudioProcessor] AAC encoding not supported, skipping audio");
 			for (const frame of decodedFrames) frame.close();
 			return;
 		}
@@ -397,28 +398,7 @@ export class AudioProcessor {
 
 		try {
 			await demuxer.load(file);
-			const audioConfig = await demuxer.getDecoderConfig("audio");
-			const reader = demuxer.read("audio").getReader();
-			let isFirstChunk = true;
-
-			try {
-				while (!this.cancelled) {
-					const { done, value: chunk } = await reader.read();
-					if (done || !chunk) break;
-					if (isFirstChunk) {
-						await muxer.addAudioChunk(chunk, { decoderConfig: audioConfig });
-						isFirstChunk = false;
-					} else {
-						await muxer.addAudioChunk(chunk);
-					}
-				}
-			} finally {
-				try {
-					await reader.cancel();
-				} catch {
-					/* reader already closed */
-				}
-			}
+			await this.processTrimOnlyAudio(demuxer, muxer, []);
 		} finally {
 			try {
 				demuxer.destroy();

src/lib/exporter/muxer.ts

@@ -40,7 +40,7 @@ export class VideoMuxer {
 
 		// Create audio source if needed
 		if (this.hasAudio) {
-			this.audioSource = new EncodedAudioPacketSource("opus");
+			this.audioSource = new EncodedAudioPacketSource("aac");
 			this.output.addAudioTrack(this.audioSource);
 		}
 

src/lib/nativeWindowsRecording.ts

@@ -0,0 +1,41 @@
+export type NativeWindowsSourceType = "display" | "window";
+
+export type NativeWindowsRecordingRequest = {
+	recordingId?: number;
+	source: {
+		type: NativeWindowsSourceType;
+		sourceId: string;
+		displayId?: number;
+		windowHandle?: string;
+	};
+	video: {
+		fps: number;
+		width: number;
+		height: number;
+	};
+	audio: {
+		system: {
+			enabled: boolean;
+		};
+		microphone: {
+			enabled: boolean;
+			deviceId?: string;
+			gain: number;
+		};
+	};
+	webcam: {
+		enabled: boolean;
+		deviceId?: string;
+		width: number;
+		height: number;
+		fps: number;
+	};
+};
+
+export type NativeWindowsRecordingStartResult = {
+	success: boolean;
+	recordingId?: number;
+	path?: string;
+	helperPath?: string;
+	error?: string;
+};