Merge remote-tracking branch 'origin/main' into codex/fix-windows-paused-recording

# Conflicts:
#	src/hooks/useScreenRecorder.ts

electron/electron-env.d.ts

@@ -117,6 +117,14 @@ interface Window {
 			discarded?: boolean;
 			error?: string;
 		}>;
+		pauseNativeWindowsRecording: () => Promise<{
+			success: boolean;
+			error?: string;
+		}>;
+		resumeNativeWindowsRecording: () => Promise<{
+			success: boolean;
+			error?: string;
+		}>;
 		startNativeMacRecording: (
 			request: import("../src/lib/nativeMacRecording").NativeMacRecordingRequest,
 		) => Promise<import("../src/lib/nativeMacRecording").NativeMacRecordingStartResult>;

electron/ipc/handlers.ts

@@ -384,6 +384,10 @@ let nativeWindowsCaptureWebcamTargetPath: string | null = null;
 let nativeWindowsCaptureRecordingId: number | null = null;
 let nativeWindowsCursorOffsetMs = 0;
 let nativeWindowsCursorCaptureMode: CursorCaptureMode = "editable-overlay";
+let nativeWindowsCursorRecordingStartMs = 0;
+let nativeWindowsPauseStartedAtMs: number | null = null;
+let nativeWindowsPauseRanges: Array<{ startMs: number; endMs: number }> = [];
+let nativeWindowsIsPaused = false;
 const NATIVE_WINDOWS_CAPTURE_STOP_TIMEOUT_MS = 15_000;
 let nativeMacCaptureProcess: ChildProcessWithoutNullStreams | null = null;
 let nativeMacCaptureOutput = "";
@@ -873,6 +877,18 @@ function completeNativeMacCursorPauseRange(endMs = Date.now()) {
 	nativeMacPauseStartedAtMs = null;
 }
 
+function completeNativeWindowsCursorPauseRange(endMs = Date.now()) {
+	if (nativeWindowsPauseStartedAtMs === null || nativeWindowsCursorRecordingStartMs <= 0) {
+		return;
+	}
+
+	nativeWindowsPauseRanges.push({
+		startMs: Math.max(0, nativeWindowsPauseStartedAtMs - nativeWindowsCursorRecordingStartMs),
+		endMs: Math.max(0, endMs - nativeWindowsCursorRecordingStartMs),
+	});
+	nativeWindowsPauseStartedAtMs = null;
+}
+
 function waitForNativeWindowsCaptureStart(proc: ChildProcessWithoutNullStreams) {
 	return new Promise<void>((resolve, reject) => {
 		const timer = setTimeout(() => {
@@ -1583,9 +1599,14 @@ export function registerIpcHandlers(
 				nativeWindowsCaptureRecordingId = recordingId;
 				nativeWindowsCursorOffsetMs = 0;
 				nativeWindowsCursorCaptureMode = cursorCaptureMode;
+				nativeWindowsCursorRecordingStartMs = 0;
+				nativeWindowsPauseStartedAtMs = null;
+				nativeWindowsPauseRanges = [];
+				nativeWindowsIsPaused = false;
 
 				const cursorStartTimeMs = Date.now();
 				if (cursorCaptureMode === "editable-overlay") {
+					nativeWindowsCursorRecordingStartMs = cursorStartTimeMs;
 					await startCursorRecording(cursorStartTimeMs);
 					console.info("[native-wgc] cursor sampler ready", {
 						cursorStartTimeMs,
@@ -1635,6 +1656,10 @@ export function registerIpcHandlers(
 				nativeWindowsCaptureRecordingId = null;
 				nativeWindowsCursorOffsetMs = 0;
 				nativeWindowsCursorCaptureMode = "editable-overlay";
+				nativeWindowsCursorRecordingStartMs = 0;
+				nativeWindowsPauseStartedAtMs = null;
+				nativeWindowsPauseRanges = [];
+				nativeWindowsIsPaused = false;
 				await stopCursorRecording();
 				return { success: false, error: String(error) };
 			}
@@ -1836,6 +1861,50 @@ export function registerIpcHandlers(
 		}
 	});
 
+	ipcMain.handle("pause-native-windows-recording", async () => {
+		const proc = nativeWindowsCaptureProcess;
+		if (!proc) {
+			return { success: false, error: "Native Windows capture is not running." };
+		}
+		if (nativeWindowsIsPaused) {
+			return { success: true };
+		}
+		if (!proc.stdin.writable) {
+			return { success: false, error: "Native Windows capture command channel is closed." };
+		}
+
+		try {
+			proc.stdin.write("pause\n");
+			nativeWindowsIsPaused = true;
+			nativeWindowsPauseStartedAtMs = Date.now();
+			return { success: true };
+		} catch (error) {
+			return { success: false, error: error instanceof Error ? error.message : String(error) };
+		}
+	});
+
+	ipcMain.handle("resume-native-windows-recording", async () => {
+		const proc = nativeWindowsCaptureProcess;
+		if (!proc) {
+			return { success: false, error: "Native Windows capture is not running." };
+		}
+		if (!nativeWindowsIsPaused) {
+			return { success: true };
+		}
+		if (!proc.stdin.writable) {
+			return { success: false, error: "Native Windows capture command channel is closed." };
+		}
+
+		try {
+			proc.stdin.write("resume\n");
+			completeNativeWindowsCursorPauseRange();
+			nativeWindowsIsPaused = false;
+			return { success: true };
+		} catch (error) {
+			return { success: false, error: error instanceof Error ? error.message : String(error) };
+		}
+	});
+
 	ipcMain.handle("stop-native-windows-recording", async (_, discard?: boolean) => {
 		const proc = nativeWindowsCaptureProcess;
 		const preferredPath = nativeWindowsCaptureTargetPath;
@@ -1848,6 +1917,7 @@ export function registerIpcHandlers(
 		}
 
 		try {
+			completeNativeWindowsCursorPauseRange();
 			const stoppedPathPromise = waitForNativeWindowsCaptureStop(proc);
 			proc.stdin.write("stop\n");
 			const stoppedPath = await stoppedPathPromise;
@@ -1872,6 +1942,7 @@ export function registerIpcHandlers(
 			}
 
 			if (cursorCaptureMode === "editable-overlay") {
+				compactPendingCursorTelemetryPauseRanges(nativeWindowsPauseRanges);
 				shiftPendingCursorTelemetry(nativeWindowsCursorOffsetMs);
 				await writePendingCursorTelemetry(screenVideoPath);
 			}
@@ -1913,6 +1984,10 @@ export function registerIpcHandlers(
 			nativeWindowsCaptureRecordingId = null;
 			nativeWindowsCursorOffsetMs = 0;
 			nativeWindowsCursorCaptureMode = "editable-overlay";
+			nativeWindowsCursorRecordingStartMs = 0;
+			nativeWindowsPauseStartedAtMs = null;
+			nativeWindowsPauseRanges = [];
+			nativeWindowsIsPaused = false;
 			const source = selectedSource || { name: "Screen" };
 			if (onRecordingStateChange) {
 				onRecordingStateChange(false, source.name);

electron/native/wgc-capture/src/audio_sample_utils.cpp

@@ -279,6 +279,7 @@ bool AudioMixer::start() {
     stopRequested_ = false;
     emittedFrames_ = 0;
     timelineStarted_ = false;
+    paused_ = false;
     thread_ = std::thread([this] {
         mixLoop();
     });
@@ -296,6 +297,18 @@ void AudioMixer::beginTimeline() {
     cv_.notify_all();
 }
 
+void AudioMixer::setPaused(bool paused) {
+    {
+        std::scoped_lock lock(mutex_);
+        paused_ = paused;
+        if (paused_) {
+            systemQueue_.clear();
+            microphoneQueue_.clear();
+        }
+    }
+    cv_.notify_all();
+}
+
 void AudioMixer::stop() {
     stopRequested_ = true;
     cv_.notify_all();
@@ -311,6 +324,9 @@ void AudioMixer::pushSystem(const BYTE* data, DWORD byteCount) {
 
     {
         std::scoped_lock lock(mutex_);
+        if (paused_) {
+            return;
+        }
         append(systemQueue_, data, byteCount, systemFormat_, 1.0);
     }
     cv_.notify_all();
@@ -323,6 +339,9 @@ void AudioMixer::pushMicrophone(const BYTE* data, DWORD byteCount) {
 
     {
         std::scoped_lock lock(mutex_);
+        if (paused_) {
+            return;
+        }
         append(microphoneQueue_, data, byteCount, microphoneFormat_, microphoneGain_);
     }
     cv_.notify_all();
@@ -371,13 +390,13 @@ void AudioMixer::mixLoop() {
                 const bool hasMicrophone = !includeMicrophone_ || microphoneQueue_.size() >= chunkBytes;
                 const bool hasAnySource = !systemQueue_.empty() || !microphoneQueue_.empty();
                 return stopRequested_.load() ||
-                    (timelineStarted_ && (hasSystem || hasMicrophone) && hasAnySource);
+                    (timelineStarted_ && !paused_ && (hasSystem || hasMicrophone) && hasAnySource);
             });
 
             if (stopRequested_) {
                 break;
             }
-            if (!timelineStarted_) {
+            if (!timelineStarted_ || paused_) {
                 continue;
             }
 

electron/native/wgc-capture/src/audio_sample_utils.h

@@ -52,6 +52,7 @@ public:
 
     bool start();
     void beginTimeline();
+    void setPaused(bool paused);
     void stop();
     void pushSystem(const BYTE* data, DWORD byteCount);
     void pushMicrophone(const BYTE* data, DWORD byteCount);
@@ -81,5 +82,6 @@ private:
     std::thread thread_;
     std::atomic<bool> stopRequested_ = false;
     bool timelineStarted_ = false;
+    bool paused_ = false;
     uint64_t emittedFrames_ = 0;
 };

electron/native/wgc-capture/src/main.cpp

@@ -13,6 +13,7 @@
 #include <condition_variable>
 #include <cctype>
 #include <cstdint>
+#include <functional>
 #include <iostream>
 #include <memory>
 #include <mutex>
@@ -50,6 +51,37 @@ struct CaptureConfig {
     int webcamFps = 0;
 };
 
+struct CaptureControl {
+    std::atomic<bool> stopRequested = false;
+    std::atomic<bool> paused = false;
+    std::mutex mutex;
+    std::condition_variable cv;
+    std::chrono::steady_clock::time_point pauseStartedAt;
+    std::chrono::steady_clock::duration totalPausedDuration{};
+
+    int64_t pausedDurationHns() {
+        std::scoped_lock lock(mutex);
+        auto total = totalPausedDuration;
+        if (paused.load()) {
+            total += std::chrono::steady_clock::now() - pauseStartedAt;
+        }
+        return std::chrono::duration_cast<std::chrono::nanoseconds>(total).count() / 100;
+    }
+
+    void setPaused(bool nextPaused) {
+        std::scoped_lock lock(mutex);
+        if (nextPaused == paused.load()) {
+            return;
+        }
+        if (nextPaused) {
+            pauseStartedAt = std::chrono::steady_clock::now();
+        } else {
+            totalPausedDuration += std::chrono::steady_clock::now() - pauseStartedAt;
+        }
+        paused = nextPaused;
+    }
+};
+
 std::wstring utf8ToWide(const std::string& value) {
     if (value.empty()) {
         return {};
@@ -319,17 +351,31 @@ bool parseConfig(const std::string& json, CaptureConfig& config) {
     return true;
 }
 
-void readStopCommands(std::atomic<bool>& stopRequested, std::condition_variable& cv) {
+void readCaptureCommands(CaptureControl& control, const std::function<void(bool)>& onPauseChanged) {
     std::string line;
     while (std::getline(std::cin, line)) {
         if (line == "stop" || line == "q" || line == "quit") {
-            stopRequested = true;
-            cv.notify_all();
+            control.stopRequested = true;
+            control.cv.notify_all();
             return;
         }
+        if (line == "pause") {
+            control.setPaused(true);
+            onPauseChanged(true);
+            std::cout << "{\"event\":\"recording-paused\",\"schemaVersion\":2}" << std::endl;
+            control.cv.notify_all();
+            continue;
+        }
+        if (line == "resume") {
+            control.setPaused(false);
+            onPauseChanged(false);
+            std::cout << "{\"event\":\"recording-resumed\",\"schemaVersion\":2}" << std::endl;
+            control.cv.notify_all();
+            continue;
+        }
     }
-    stopRequested = true;
-    cv.notify_all();
+    control.stopRequested = true;
+    control.cv.notify_all();
 }
 
 } // namespace
@@ -489,8 +535,7 @@ int main(int argc, char* argv[]) {
     }
 
     std::mutex mutex;
-    std::condition_variable cv;
-    std::atomic<bool> stopRequested = false;
+    CaptureControl control;
     std::atomic<bool> firstFrameWritten = false;
     std::atomic<bool> encodeFailed = false;
     Microsoft::WRL::ComPtr<ID3D11Texture2D> latestFrameTexture;
@@ -503,7 +548,7 @@ int main(int argc, char* argv[]) {
     bool hasVisibleWebcamFrame = false;
 
     session.setFrameCallback([&](ID3D11Texture2D* texture, int64_t timestampHns) {
-        if (stopRequested) {
+        if (control.stopRequested || control.paused) {
             return;
         }
 
@@ -516,8 +561,8 @@ int main(int argc, char* argv[]) {
             desc.MiscFlags = 0;
             if (FAILED(session.device()->CreateTexture2D(&desc, nullptr, &latestFrameTexture))) {
                 encodeFailed = true;
-                stopRequested = true;
-                cv.notify_all();
+                control.stopRequested = true;
+                control.cv.notify_all();
                 return;
             }
         }
@@ -525,20 +570,29 @@ int main(int argc, char* argv[]) {
         session.context()->CopyResource(latestFrameTexture.Get(), texture);
         latestFrameTimestampHns = timestampHns;
         if (!firstFrameWritten.exchange(true)) {
-            cv.notify_all();
+            control.cv.notify_all();
         }
     });
 
     auto writeVideoFrames = [&]() {
-        const auto startedAt = std::chrono::steady_clock::now();
+        const auto frameDuration = std::chrono::duration_cast<std::chrono::steady_clock::duration>(
+            std::chrono::duration<double>(1.0 / config.fps));
         uint64_t frameIndex = 0;
         uint64_t lastWrittenWebcamSequence = 0;
         uint64_t webcamOutputFrameIndex = 0;
         int64_t lastEncodedVideoTimestampHns = -1;
 
-        while (!stopRequested && !encodeFailed) {
+        while (!control.stopRequested && !encodeFailed) {
             {
-                std::scoped_lock lock(mutex);
+                std::unique_lock lock(mutex);
+                control.cv.wait(lock, [&] {
+                    return control.stopRequested.load() ||
+                        encodeFailed.load() ||
+                        (!control.paused.load() && latestFrameTexture);
+                });
+                if (control.stopRequested || encodeFailed) {
+                    break;
+                }
                 if (webcamActive) {
                     WebcamFrameSnapshot candidateWebcamFrame;
                     if (webcamCapture.copyLatestFrame(candidateWebcamFrame) &&
@@ -564,7 +618,9 @@ int main(int argc, char* argv[]) {
                     firstFrameTimestampHns = sourceTimestampHns;
                 }
                 int64_t frameTimestampHns =
-                    std::max<int64_t>(0, sourceTimestampHns - firstFrameTimestampHns);
+                    std::max<int64_t>(
+                        0,
+                        sourceTimestampHns - firstFrameTimestampHns - control.pausedDurationHns());
                 if (lastEncodedVideoTimestampHns >= 0 &&
                     frameTimestampHns <= lastEncodedVideoTimestampHns) {
                     frameTimestampHns =
@@ -588,8 +644,8 @@ int main(int argc, char* argv[]) {
                         frameTimestampHns,
                         !writeSeparateWebcam && webcamFrame.data ? &webcamFrame : nullptr)) {
                     encodeFailed = true;
-                    stopRequested = true;
-                    cv.notify_all();
+                    control.stopRequested = true;
+                    control.cv.notify_all();
                     return;
                 }
                 if (latestFrameTexture) {
@@ -598,10 +654,7 @@ int main(int argc, char* argv[]) {
             }
 
             frameIndex += 1;
-            const auto nextDeadline = startedAt +
-                std::chrono::duration_cast<std::chrono::steady_clock::duration>(
-                    std::chrono::duration<double>(static_cast<double>(frameIndex) / config.fps));
-            std::this_thread::sleep_until(nextDeadline);
+            std::this_thread::sleep_for(frameDuration);
         }
     };
 
@@ -633,8 +686,8 @@ int main(int argc, char* argv[]) {
             [&](const BYTE* data, DWORD byteCount, int64_t timestampHns, int64_t durationHns) {
                 if (!encoder.writeAudio(data, byteCount, timestampHns, durationHns)) {
                     encodeFailed = true;
-                    stopRequested = true;
-                    cv.notify_all();
+                    control.stopRequested = true;
+                    control.cv.notify_all();
                     return false;
                 }
                 return true;
@@ -649,7 +702,7 @@ int main(int argc, char* argv[]) {
             if (!microphoneCapture.start([&](const BYTE* data, DWORD byteCount, int64_t timestampHns, int64_t durationHns) {
                     (void)timestampHns;
                     (void)durationHns;
-                    if (stopRequested || !audioMixer) {
+                    if (control.stopRequested || !audioMixer) {
                         return;
                     }
 
@@ -665,7 +718,7 @@ int main(int argc, char* argv[]) {
             if (!loopbackCapture.start([&](const BYTE* data, DWORD byteCount, int64_t timestampHns, int64_t durationHns) {
                     (void)timestampHns;
                     (void)durationHns;
-                    if (stopRequested || !audioMixer) {
+                    if (control.stopRequested || !audioMixer) {
                         return;
                     }
 
@@ -726,16 +779,20 @@ int main(int argc, char* argv[]) {
         return 1;
     }
 
-    std::thread stdinThread(readStopCommands, std::ref(stopRequested), std::ref(cv));
+    std::thread stdinThread(readCaptureCommands, std::ref(control), [&](bool isPaused) {
+        if (audioMixer) {
+            audioMixer->setPaused(isPaused);
+        }
+    });
 
     {
         std::unique_lock lock(mutex);
-        const bool started = cv.wait_for(lock, std::chrono::seconds(10), [&] {
-            return firstFrameWritten.load() || stopRequested.load();
+        const bool started = control.cv.wait_for(lock, std::chrono::seconds(10), [&] {
+            return firstFrameWritten.load() || control.stopRequested.load();
         });
         if (!started || !firstFrameWritten) {
-            stopRequested = true;
-            cv.notify_all();
+            control.stopRequested = true;
+            control.cv.notify_all();
             if (stdinThread.joinable()) {
                 stdinThread.detach();
             }
@@ -761,8 +818,8 @@ int main(int argc, char* argv[]) {
 
     {
         std::unique_lock lock(mutex);
-        cv.wait(lock, [&] {
-            return stopRequested.load();
+        control.cv.wait(lock, [&] {
+            return control.stopRequested.load();
         });
     }
 

electron/preload.ts

@@ -87,6 +87,12 @@ contextBridge.exposeInMainWorld("electronAPI", {
 	stopNativeWindowsRecording: (discard?: boolean) => {
 		return ipcRenderer.invoke("stop-native-windows-recording", discard);
 	},
+	pauseNativeWindowsRecording: () => {
+		return ipcRenderer.invoke("pause-native-windows-recording");
+	},
+	resumeNativeWindowsRecording: () => {
+		return ipcRenderer.invoke("resume-native-windows-recording");
+	},
 	startNativeMacRecording: (request: NativeMacRecordingRequest) => {
 		return ipcRenderer.invoke("start-native-mac-recording", request);
 	},

scripts/build-windows-wgc-helper.mjs

@@ -37,6 +37,21 @@ function findVcVarsAll() {
 	return null;
 }
 
+function findWindowsSdkUmLibDir() {
+	const sdkLibRoot = "C:\\Program Files (x86)\\Windows Kits\\10\\Lib";
+	if (!fs.existsSync(sdkLibRoot)) {
+		return null;
+	}
+
+	return fs
+		.readdirSync(sdkLibRoot, { withFileTypes: true })
+		.filter((entry) => entry.isDirectory())
+		.map((entry) => path.join(sdkLibRoot, entry.name, "um", "x64"))
+		.filter((candidate) => fs.existsSync(path.join(candidate, "kernel32.lib")))
+		.sort()
+		.at(-1);
+}
+
 function run(command, args, options = {}) {
 	return new Promise((resolve, reject) => {
 		const child = spawn(command, args, {
@@ -64,6 +79,8 @@ async function runInVsEnv(command) {
 		);
 	}
 
+	const sdkUmLibDir = findWindowsSdkUmLibDir();
+
 	const cmdPath = path.join(os.tmpdir(), `openscreen-build-wgc-${process.pid}-${Date.now()}.cmd`);
 	fs.writeFileSync(
 		cmdPath,
@@ -72,9 +89,9 @@ async function runInVsEnv(command) {
 			`call "${vcvarsAll}" x64`,
 			"if errorlevel 1 exit /b %errorlevel%",
 			`if not exist "${COMPAT_LIB_DIR}" mkdir "${COMPAT_LIB_DIR}"`,
-			`for %%L in (gdi32.lib winspool.lib shell32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib) do if not exist "%WindowsSdkDir%Lib\\%WindowsSDKLibVersion%um\\x64\\%%L" copy /Y "%WindowsSdkDir%Lib\\%WindowsSDKLibVersion%um\\x64\\kernel32.Lib" "${COMPAT_LIB_DIR}\\%%L" >nul`,
+			`for %%L in (gdi32.lib gdiplus.lib winspool.lib shell32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib) do if not exist "%WindowsSdkDir%Lib\\%WindowsSDKLibVersion%um\\x64\\%%L" copy /Y "%WindowsSdkDir%Lib\\%WindowsSDKLibVersion%um\\x64\\kernel32.Lib" "${COMPAT_LIB_DIR}\\%%L" >nul`,
 			"if errorlevel 1 exit /b %errorlevel%",
-			`set "LIB=${COMPAT_LIB_DIR};%LIB%"`,
+			`set "LIB=${sdkUmLibDir ? `${sdkUmLibDir};` : ""}%LIB%;${COMPAT_LIB_DIR}"`,
 			command,
 			"exit /b %errorlevel%",
 			"",

src/components/video-editor/SettingsPanel.tsx

@@ -53,6 +53,7 @@ import ColorPicker from "../ui/color-picker";
 import { AnnotationSettingsPanel } from "./AnnotationSettingsPanel";
 import { BlurSettingsPanel } from "./BlurSettingsPanel";
 import { CropControl } from "./CropControl";
+import { parseCustomPlaybackSpeedInput } from "./customPlaybackSpeed";
 import { KeyboardShortcutsHelp } from "./KeyboardShortcutsHelp";
 import type {
 	AnnotationRegion,
@@ -71,7 +72,6 @@ import type {
 } from "./types";
 import {
 	DEFAULT_WEBCAM_SIZE_PRESET,
-	MAX_PLAYBACK_SPEED,
 	MAX_ZOOM_SCALE,
 	MIN_ZOOM_SCALE,
 	ROTATION_3D_PRESET_ORDER,
@@ -90,37 +90,38 @@ function CustomSpeedInput({
 	onError: () => void;
 }) {
 	const isPreset = SPEED_OPTIONS.some((o) => o.speed === value);
-	const [draft, setDraft] = useState(isPreset ? "" : String(Math.round(value)));
+	const [draft, setDraft] = useState(isPreset ? "" : String(value));
 	const [isFocused, setIsFocused] = useState(false);
 
 	const prevValue = useRef(value);
 	if (!isFocused && prevValue.current !== value) {
 		prevValue.current = value;
-		setDraft(isPreset ? "" : String(Math.round(value)));
+		setDraft(isPreset ? "" : String(value));
 	}
 
 	const handleChange = useCallback(
 		(e: React.ChangeEvent<HTMLInputElement>) => {
-			const digits = e.target.value.replace(/\D/g, "");
-			if (digits === "") {
-				setDraft("");
-				return;
-			}
-			const num = Number(digits);
-			if (num > MAX_PLAYBACK_SPEED) {
+			const result = parseCustomPlaybackSpeedInput(e.target.value);
+			if (result.status === "too-fast") {
 				onError();
 				return;
 			}
-			setDraft(digits);
-			if (num >= 1) onChange(num);
+
+			setDraft(result.draft);
+			if (result.status === "valid") {
+				onChange(result.speed);
+			}
 		},
 		[onChange, onError],
 	);
 
 	const handleBlur = useCallback(() => {
 		setIsFocused(false);
-		if (!draft || Number(draft) < 1) {
-			setDraft(isPreset ? "" : String(Math.round(value)));
+		const result = parseCustomPlaybackSpeedInput(draft);
+		if (result.status === "valid") {
+			setDraft(String(result.speed));
+		} else {
+			setDraft(isPreset ? "" : String(value));
 		}
 	}, [draft, isPreset, value]);
 
@@ -128,8 +129,8 @@ function CustomSpeedInput({
 		<div className="flex items-center gap-1">
 			<input
 				type="text"
-				inputMode="numeric"
-				pattern="[0-9]*"
+				inputMode="decimal"
+				pattern="[0-9]*[.]?[0-9]*"
 				placeholder="--"
 				value={draft}
 				onFocus={() => setIsFocused(true)}

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

@@ -0,0 +1,50 @@
+import { describe, expect, it } from "vitest";
+import { parseCustomPlaybackSpeedInput } from "./customPlaybackSpeed";
+
+describe("parseCustomPlaybackSpeedInput", () => {
+	it("accepts decimal playback speeds", () => {
+		expect(parseCustomPlaybackSpeedInput("1.1")).toEqual({
+			status: "valid",
+			draft: "1.1",
+			speed: 1.1,
+		});
+	});
+
+	it("keeps a single decimal point while typing", () => {
+		expect(parseCustomPlaybackSpeedInput("1.2.3")).toEqual({
+			status: "valid",
+			draft: "1.23",
+			speed: 1.23,
+		});
+	});
+
+	it("allows sub-1 custom speeds down to the editor minimum", () => {
+		expect(parseCustomPlaybackSpeedInput("0.1")).toEqual({
+			status: "valid",
+			draft: "0.1",
+			speed: 0.1,
+		});
+	});
+
+	it("rejects speeds below the editor minimum", () => {
+		expect(parseCustomPlaybackSpeedInput("0.09")).toEqual({
+			status: "too-slow",
+			draft: "0.09",
+		});
+	});
+
+	it("accepts comma decimal input by normalizing to a dot", () => {
+		expect(parseCustomPlaybackSpeedInput("1,1")).toEqual({
+			status: "valid",
+			draft: "1.1",
+			speed: 1.1,
+		});
+	});
+
+	it("rejects speeds above the editor maximum", () => {
+		expect(parseCustomPlaybackSpeedInput("16.1")).toEqual({
+			status: "too-fast",
+			draft: "16.1",
+		});
+	});
+});

src/components/video-editor/customPlaybackSpeed.ts

@@ -0,0 +1,37 @@
+import {
+	clampPlaybackSpeed,
+	MAX_PLAYBACK_SPEED,
+	MIN_PLAYBACK_SPEED,
+	type PlaybackSpeed,
+} from "./types";
+
+export type CustomPlaybackSpeedInputResult =
+	| { status: "empty"; draft: string }
+	| { status: "too-fast"; draft: string }
+	| { status: "too-slow"; draft: string }
+	| { status: "valid"; draft: string; speed: PlaybackSpeed };
+
+export function parseCustomPlaybackSpeedInput(rawValue: string): CustomPlaybackSpeedInputResult {
+	const decimalDraft = rawValue.replace(/,/g, ".").replace(/[^\d.]/g, "");
+	const [whole = "", ...fractionParts] = decimalDraft.split(".");
+	const draft = fractionParts.length > 0 ? `${whole}.${fractionParts.join("")}` : whole;
+
+	if (draft === "" || draft === ".") {
+		return { status: "empty", draft };
+	}
+
+	const speed = Number(draft);
+	if (!Number.isFinite(speed)) {
+		return { status: "empty", draft };
+	}
+
+	if (speed > MAX_PLAYBACK_SPEED) {
+		return { status: "too-fast", draft };
+	}
+
+	if (speed < MIN_PLAYBACK_SPEED) {
+		return { status: "too-slow", draft };
+	}
+
+	return { status: "valid", draft, speed: clampPlaybackSpeed(speed) };
+}

src/hooks/useScreenRecorder.ts

@@ -45,8 +45,6 @@ const AUDIO_BITRATE_VOICE = 128_000;
 const AUDIO_BITRATE_SYSTEM = 192_000;
 
 const MIC_GAIN_BOOST = 1.4;
-const WEBCAM_TARGET_WIDTH = 1280;
-const WEBCAM_TARGET_HEIGHT = 720;
 const WEBCAM_TARGET_FRAME_RATE = 30;
 
 type UseScreenRecorderReturn = {
@@ -84,6 +82,7 @@ type RecorderHandle = {
 type NativeWindowsRecordingHandle = {
 	recordingId: number;
 	finalizing: boolean;
+	paused: boolean;
 	webcamRecorder: RecorderHandle | null;
 };
 
@@ -150,9 +149,9 @@ export function useScreenRecorder(): UseScreenRecorderReturn {
 	const webcamAcquireId = useRef(0);
 	const canPauseRecording =
 		recording &&
-		!nativeWindowsRecording.current &&
 		Boolean(
-			(nativeMacRecording.current && !nativeMacRecording.current.finalizing) ||
+			(nativeWindowsRecording.current && !nativeWindowsRecording.current.finalizing) ||
+				(nativeMacRecording.current && !nativeMacRecording.current.finalizing) ||
 				(screenRecorder.current && screenRecorder.current.recorder.state !== "inactive"),
 		);
 
@@ -268,13 +267,9 @@ export function useScreenRecorder(): UseScreenRecorderReturn {
 					video: webcamDeviceId
 						? {
 								deviceId: { exact: webcamDeviceId },
-								width: { ideal: WEBCAM_TARGET_WIDTH },
-								height: { ideal: WEBCAM_TARGET_HEIGHT },
 								frameRate: { ideal: WEBCAM_TARGET_FRAME_RATE, max: WEBCAM_TARGET_FRAME_RATE },
 							}
 						: {
-								width: { ideal: WEBCAM_TARGET_WIDTH },
-								height: { ideal: WEBCAM_TARGET_HEIGHT },
 								frameRate: { ideal: WEBCAM_TARGET_FRAME_RATE, max: WEBCAM_TARGET_FRAME_RATE },
 							},
 				});
@@ -798,12 +793,12 @@ export function useScreenRecorder(): UseScreenRecorderReturn {
 				if (availability.reason === "unsupported-os") {
 					return false;
 				}
+				if (availability.reason === "missing-helper") {
+					console.warn("Native Windows capture helper is not available; using browser capture.");
+					return false;
+				}
 
-				throw new Error(
-					availability.reason === "missing-helper"
-						? "Native Windows capture helper is not available."
-						: (availability.error ?? "Native Windows capture is not available."),
-				);
+				throw new Error(availability.error ?? "Native Windows capture is not available.");
 			}
 
 			if (!isCountdownRunActive(countdownRunToken)) {
@@ -858,8 +853,8 @@ export function useScreenRecorder(): UseScreenRecorderReturn {
 					enabled: webcamEnabled && !browserWebcamRecorder,
 					deviceId: webcamDeviceId,
 					deviceName: webcamDeviceName,
-					width: WEBCAM_TARGET_WIDTH,
-					height: WEBCAM_TARGET_HEIGHT,
+					width: 0,
+					height: 0,
 					fps: WEBCAM_TARGET_FRAME_RATE,
 				},
 				cursor: {
@@ -881,6 +876,7 @@ export function useScreenRecorder(): UseScreenRecorderReturn {
 			nativeWindowsRecording.current = {
 				recordingId: result.recordingId,
 				finalizing: false,
+				paused: false,
 				webcamRecorder: browserWebcamRecorder,
 			};
 			webcamRecorder.current = browserWebcamRecorder;
@@ -995,8 +991,8 @@ export function useScreenRecorder(): UseScreenRecorderReturn {
 					enabled: webcamEnabled,
 					deviceId: webcamDeviceId,
 					deviceName: webcamDeviceName,
-					width: WEBCAM_TARGET_WIDTH,
-					height: WEBCAM_TARGET_HEIGHT,
+					width: 0,
+					height: 0,
 					fps: WEBCAM_TARGET_FRAME_RATE,
 				},
 				cursor: {
@@ -1409,6 +1405,39 @@ export function useScreenRecorder(): UseScreenRecorderReturn {
 	};
 
 	const togglePaused = () => {
+		const activeNativeWindowsRecording = nativeWindowsRecording.current;
+		if (activeNativeWindowsRecording && !activeNativeWindowsRecording.finalizing) {
+			void (async () => {
+				try {
+					if (activeNativeWindowsRecording.paused) {
+						const result = await window.electronAPI.resumeNativeWindowsRecording();
+						if (!result.success) {
+							throw new Error(result.error ?? "Failed to resume native Windows recording");
+						}
+						activeNativeWindowsRecording.paused = false;
+						segmentStartedAt.current = Date.now();
+						setPaused(false);
+						return;
+					}
+
+					const pausedAtMs = getRecordingDurationMs();
+					const result = await window.electronAPI.pauseNativeWindowsRecording();
+					if (!result.success) {
+						throw new Error(result.error ?? "Failed to pause native Windows recording");
+					}
+					activeNativeWindowsRecording.paused = true;
+					accumulatedDurationMs.current = pausedAtMs;
+					segmentStartedAt.current = null;
+					setElapsedSeconds(Math.floor(accumulatedDurationMs.current / 1000));
+					setPaused(true);
+				} catch (error) {
+					console.error("Failed to toggle native Windows pause state:", error);
+					toast.error(error instanceof Error ? error.message : "Failed to toggle pause state");
+				}
+			})();
+			return;
+		}
+
 		const activeNativeMacRecording = nativeMacRecording.current;
 		if (activeNativeMacRecording && !activeNativeMacRecording.finalizing) {
 			void (async () => {

src/i18n/locales/it/settings.json

@@ -104,8 +104,9 @@
 		"gifButton": "Esporta GIF",
 		"chooseSaveLocation": "Scegli posizione di salvataggio"
 	},
-	"links": {
+	"support": {
 		"reportBug": "Segnala bug",
+		"saveDiagnostics": "Salva dati diagnostici",
 		"starOnGithub": "Metti stella su GitHub"
 	},
 	"imageUpload": {