diff --git a/src/components/video-editor/ShortcutsConfigDialog.tsx b/src/components/video-editor/ShortcutsConfigDialog.tsx
index faa7513..6b9ef78 100644
--- a/src/components/video-editor/ShortcutsConfigDialog.tsx
+++ b/src/components/video-editor/ShortcutsConfigDialog.tsx
@@ -126,95 +126,99 @@ export function ShortcutsConfigDialog() {
 				if (!open) handleClose();
 			}}
 		>
-			<DialogContent className="bg-[#09090b] border-white/10 text-white max-w-[420px]">
-				<DialogHeader>
+			<DialogContent className="bg-[#09090b] border-white/10 text-white max-w-[420px] max-h-[85vh] flex flex-col">
+				<DialogHeader className="shrink-0">
 					<DialogTitle className="flex items-center gap-2 text-sm">
 						<Keyboard className="w-4 h-4 text-[#34B27B]" />
 						{t("title")}
 					</DialogTitle>
 				</DialogHeader>
 
-				<div className="space-y-0.5">
-					<p className="text-[10px] text-slate-500 mb-2 uppercase tracking-wide font-semibold">
-						{t("configurable")}
-					</p>
-					{SHORTCUT_ACTIONS.map((action) => {
-						const isCapturing = captureFor === action;
-						const hasConflict = conflict?.forAction === action;
-						return (
-							<div key={action}>
-								<div className="flex items-center justify-between py-1.5 px-1 border-b border-white/5">
-									<span className="text-sm text-slate-300">{t(`actions.${action}`)}</span>
-									<button
-										type="button"
-										onClick={() => {
-											setConflict(null);
-											setCaptureFor(isCapturing ? null : action);
-										}}
-										title={isCapturing ? t("pressEscToCancel") : t("clickToChange")}
-										className={[
-											"px-2 py-1 rounded text-xs font-mono border transition-all min-w-[90px] text-center select-none",
-											isCapturing
-												? "bg-[#34B27B]/20 border-[#34B27B] text-[#34B27B] animate-pulse"
-												: hasConflict
-													? "bg-amber-500/10 border-amber-500/50 text-amber-400"
-													: "bg-white/5 border-white/10 text-slate-200 hover:border-[#34B27B]/50 hover:text-[#34B27B] cursor-pointer",
-										].join(" ")}
-									>
-										{isCapturing ? t("pressKey") : formatBinding(draft[action], isMac)}
-									</button>
-								</div>
-								{hasConflict && conflict?.conflictWith.type === "configurable" && (
-									<div className="flex items-center justify-between px-1 py-1.5 mb-0.5 bg-amber-500/10 border border-amber-500/20 rounded text-xs">
-										<span className="text-amber-400">
-											⚠{" "}
-											{t("alreadyUsedBy", { action: t(`actions.${conflict.conflictWith.action}`) })}
-										</span>
-										<div className="flex gap-1.5">
-											<button
-												type="button"
-												onClick={handleSwap}
-												className="px-2 py-0.5 bg-amber-500/20 hover:bg-amber-500/30 border border-amber-500/40 rounded text-amber-300 font-medium transition-colors"
-											>
-												{t("swap")}
-											</button>
-											<button
-												type="button"
-												onClick={handleCancelConflict}
-												className="px-2 py-0.5 bg-white/5 hover:bg-white/10 border border-white/10 rounded text-slate-400 transition-colors"
-											>
-												{tc("actions.cancel")}
-											</button>
-										</div>
+				<div className="flex-1 min-h-0 overflow-y-auto pr-1 -mr-1">
+					<div className="space-y-0.5">
+						<p className="text-[10px] text-slate-500 mb-2 uppercase tracking-wide font-semibold">
+							{t("configurable")}
+						</p>
+						{SHORTCUT_ACTIONS.map((action) => {
+							const isCapturing = captureFor === action;
+							const hasConflict = conflict?.forAction === action;
+							return (
+								<div key={action}>
+									<div className="flex items-center justify-between py-1.5 px-1 border-b border-white/5">
+										<span className="text-sm text-slate-300">{t(`actions.${action}`)}</span>
+										<button
+											type="button"
+											onClick={() => {
+												setConflict(null);
+												setCaptureFor(isCapturing ? null : action);
+											}}
+											title={isCapturing ? t("pressEscToCancel") : t("clickToChange")}
+											className={[
+												"px-2 py-1 rounded text-xs font-mono border transition-all min-w-[90px] text-center select-none",
+												isCapturing
+													? "bg-[#34B27B]/20 border-[#34B27B] text-[#34B27B] animate-pulse"
+													: hasConflict
+														? "bg-amber-500/10 border-amber-500/50 text-amber-400"
+														: "bg-white/5 border-white/10 text-slate-200 hover:border-[#34B27B]/50 hover:text-[#34B27B] cursor-pointer",
+											].join(" ")}
+										>
+											{isCapturing ? t("pressKey") : formatBinding(draft[action], isMac)}
+										</button>
 									</div>
-								)}
+									{hasConflict && conflict?.conflictWith.type === "configurable" && (
+										<div className="flex items-center justify-between px-1 py-1.5 mb-0.5 bg-amber-500/10 border border-amber-500/20 rounded text-xs">
+											<span className="text-amber-400">
+												⚠{" "}
+												{t("alreadyUsedBy", {
+													action: t(`actions.${conflict.conflictWith.action}`),
+												})}
+											</span>
+											<div className="flex gap-1.5">
+												<button
+													type="button"
+													onClick={handleSwap}
+													className="px-2 py-0.5 bg-amber-500/20 hover:bg-amber-500/30 border border-amber-500/40 rounded text-amber-300 font-medium transition-colors"
+												>
+													{t("swap")}
+												</button>
+												<button
+													type="button"
+													onClick={handleCancelConflict}
+													className="px-2 py-0.5 bg-white/5 hover:bg-white/10 border border-white/10 rounded text-slate-400 transition-colors"
+												>
+													{tc("actions.cancel")}
+												</button>
+											</div>
+										</div>
+									)}
+								</div>
+							);
+						})}
+					</div>
+
+					<div className="space-y-0.5 mt-2">
+						<p className="text-[10px] text-slate-500 mb-2 uppercase tracking-wide font-semibold">
+							{t("fixed")}
+						</p>
+						{FIXED_SHORTCUTS.map(({ i18nKey, label, display }) => (
+							<div
+								key={i18nKey}
+								className="flex items-center justify-between py-1.5 px-1 border-b border-white/5 last:border-0"
+							>
+								<span className="text-sm text-slate-400">
+									{t(`fixedActions.${i18nKey}`, { defaultValue: label })}
+								</span>
+								<kbd className="px-2 py-1 bg-white/5 border border-white/10 rounded text-xs font-mono text-slate-400 min-w-[90px] text-center">
+									{display}
+								</kbd>
 							</div>
-						);
-					})}
+						))}
+					</div>
+
+					<p className="text-[10px] text-slate-500 mt-1">{t("helpText")}</p>
 				</div>
 
-				<div className="space-y-0.5 mt-2">
-					<p className="text-[10px] text-slate-500 mb-2 uppercase tracking-wide font-semibold">
-						{t("fixed")}
-					</p>
-					{FIXED_SHORTCUTS.map(({ i18nKey, label, display }) => (
-						<div
-							key={i18nKey}
-							className="flex items-center justify-between py-1.5 px-1 border-b border-white/5 last:border-0"
-						>
-							<span className="text-sm text-slate-400">
-								{t(`fixedActions.${i18nKey}`, { defaultValue: label })}
-							</span>
-							<kbd className="px-2 py-1 bg-white/5 border border-white/10 rounded text-xs font-mono text-slate-400 min-w-[90px] text-center">
-								{display}
-							</kbd>
-						</div>
-					))}
-				</div>
-
-				<p className="text-[10px] text-slate-500 mt-1">{t("helpText")}</p>
-
-				<DialogFooter className="flex gap-2 sm:justify-between mt-2">
+				<DialogFooter className="shrink-0 flex gap-2 sm:justify-between mt-2">
 					<Button
 						variant="ghost"
 						size="sm"
diff --git a/src/i18n/locales/fr/editor.json b/src/i18n/locales/fr/editor.json
index ae48fdf..6380c6b 100644
--- a/src/i18n/locales/fr/editor.json
+++ b/src/i18n/locales/fr/editor.json
@@ -40,5 +40,6 @@
 		"cameraDisconnected": "Webcam déconnectée.",
 		"cameraNotFound": "Caméra introuvable.",
 		"permissionDenied": "Permission d'enregistrement refusée. Veuillez autoriser l'enregistrement d'écran."
-	}
+	},
+	"loadingVideo": "Chargement de la vidéo..."
 }
diff --git a/src/i18n/locales/ja-JP/editor.json b/src/i18n/locales/ja-JP/editor.json
index 1501230..401dbc7 100644
--- a/src/i18n/locales/ja-JP/editor.json
+++ b/src/i18n/locales/ja-JP/editor.json
@@ -17,7 +17,8 @@
 		"exportFailedWithError": "エクスポートに失敗しました: {{error}}",
 		"failedToSaveExport": "エクスポートの保存に失敗しました",
 		"failedToSaveExportedVideo": "エクスポートしたビデオの保存に失敗しました",
-		"failedToRevealInFolder": "フォルダの表示に失敗しました: {{error}}"
+		"failedToRevealInFolder": "フォルダの表示に失敗しました: {{error}}",
+		"exportBackgroundLoadFailed": "エクスポートに失敗しました: 背景画像を読み込めませんでした ({{url}})"
 	},
 	"export": {
 		"canceled": "エクスポートがキャンセルされました",
@@ -37,6 +38,8 @@
 		"systemAudioUnavailable": "システムオーディオが利用できません。システムオーディオなしで録画します。",
 		"microphoneDenied": "マイクのアクセスが拒否されました。オーディオなしで録画を続行します。",
 		"cameraDenied": "カメラのアクセスが拒否されました。ウェブカメラなしで録画を続行します。",
-		"permissionDenied": "録画の権限が拒否されました。画面録画を許可してください。"
+		"permissionDenied": "録画の権限が拒否されました。画面録画を許可してください。",
+		"cameraDisconnected": "ウェブカメラが切断されました。",
+		"cameraNotFound": "カメラが見つかりません。"
 	}
 }
diff --git a/src/i18n/locales/ko-KR/editor.json b/src/i18n/locales/ko-KR/editor.json
index 466e656..ce16244 100644
--- a/src/i18n/locales/ko-KR/editor.json
+++ b/src/i18n/locales/ko-KR/editor.json
@@ -38,6 +38,8 @@
 		"systemAudioUnavailable": "시스템 오디오를 사용할 수 없습니다. 시스템 오디오 없이 녹화합니다.",
 		"microphoneDenied": "마이크 접근이 거부되었습니다. 오디오 없이 녹화를 계속합니다.",
 		"cameraDenied": "카메라 접근이 거부되었습니다. 웹캠 없이 녹화를 계속합니다.",
-		"permissionDenied": "녹화 권한이 거부되었습니다. 화면 녹화를 허용해 주세요."
+		"permissionDenied": "녹화 권한이 거부되었습니다. 화면 녹화를 허용해 주세요.",
+		"cameraDisconnected": "웹캠 연결이 끊어졌습니다.",
+		"cameraNotFound": "카메라를 찾을 수 없습니다."
 	}
 }
diff --git a/src/i18n/locales/ko-KR/launch.json b/src/i18n/locales/ko-KR/launch.json
index 1cc695e..d9f6d6a 100644
--- a/src/i18n/locales/ko-KR/launch.json
+++ b/src/i18n/locales/ko-KR/launch.json
@@ -33,5 +33,11 @@
 	"recording": {
 		"selectSource": "녹화할 소스를 선택해 주세요"
 	},
-	"language": "언어"
+	"language": "언어",
+	"systemLanguagePrompt": {
+		"title": "시스템 언어를 사용하시겠습니까?",
+		"description": "시스템 언어가 {{language}}(으)로 감지되었습니다. OpenScreen을 {{language}}(으)로 전환하시겠습니까?",
+		"switch": "{{language}}(으)로 전환",
+		"keepDefault": "현재 언어 유지"
+	}
 }
diff --git a/src/i18n/locales/ko-KR/settings.json b/src/i18n/locales/ko-KR/settings.json
index 5defbb6..08fdb3c 100644
--- a/src/i18n/locales/ko-KR/settings.json
+++ b/src/i18n/locales/ko-KR/settings.json
@@ -27,7 +27,8 @@
 		"pictureInPicture": "화면 속 화면",
 		"verticalStack": "세로 배치",
 		"webcamShape": "카메라 모양",
-		"webcamSize": "웹캠 크기"
+		"webcamSize": "웹캠 크기",
+		"dualFrame": "듀얼 프레임"
 	},
 	"effects": {
 		"title": "비디오 효과",
@@ -129,7 +130,20 @@
 		"invalidImageType": "지원하지 않는 파일 형식입니다",
 		"imageFormatsOnly": "JPG, PNG, GIF 또는 WebP 이미지 파일을 업로드해 주세요.",
 		"imageUploadSuccess": "이미지가 성공적으로 업로드되었습니다!",
-		"failedImageUpload": "이미지 업로드에 실패했습니다"
+		"failedImageUpload": "이미지 업로드에 실패했습니다",
+		"blurColor": "블러 색상",
+		"blurColorBlack": "검정",
+		"blurColorWhite": "흰색",
+		"blurIntensity": "블러 강도",
+		"blurShape": "블러 모양",
+		"blurShapeFreehand": "자유 곡선",
+		"blurShapeOval": "타원",
+		"blurShapeRectangle": "사각형",
+		"blurType": "블러 종류",
+		"blurTypeBlur": "블러",
+		"blurTypeMosaic": "모자이크 블러",
+		"mosaicBlockSize": "모자이크 블록 크기",
+		"typeBlur": "블러"
 	},
 	"fontStyles": {
 		"classic": "클래식",
diff --git a/src/i18n/locales/ko-KR/shortcuts.json b/src/i18n/locales/ko-KR/shortcuts.json
index 1760d8f..13b11a6 100644
--- a/src/i18n/locales/ko-KR/shortcuts.json
+++ b/src/i18n/locales/ko-KR/shortcuts.json
@@ -20,7 +20,8 @@
 		"addAnnotation": "주석 추가",
 		"addKeyframe": "키프레임 추가",
 		"deleteSelected": "선택 항목 삭제",
-		"playPause": "재생 / 일시정지"
+		"playPause": "재생 / 일시정지",
+		"addBlur": "블러 추가"
 	},
 	"fixedActions": {
 		"undo": "실행 취소",
diff --git a/src/i18n/locales/ko-KR/timeline.json b/src/i18n/locales/ko-KR/timeline.json
index 7009e68..52e2ca7 100644
--- a/src/i18n/locales/ko-KR/timeline.json
+++ b/src/i18n/locales/ko-KR/timeline.json
@@ -4,13 +4,15 @@
 		"suggestZooms": "커서 기반 줌 제안",
 		"addTrim": "트림 추가 (T)",
 		"addAnnotation": "주석 추가 (A)",
-		"addSpeed": "속도 추가 (S)"
+		"addSpeed": "속도 추가 (S)",
+		"addBlur": "블러 추가 (B)"
 	},
 	"hints": {
 		"pressZoom": "Z를 눌러 줌 추가",
 		"pressTrim": "T를 눌러 트림 추가",
 		"pressAnnotation": "A를 눌러 주석 추가",
-		"pressSpeed": "S를 눌러 속도 추가"
+		"pressSpeed": "S를 눌러 속도 추가",
+		"pressBlur": "B 키를 눌러 블러 영역을 추가하세요"
 	},
 	"labels": {
 		"pan": "이동",
@@ -22,7 +24,8 @@
 		"speedItem": "속도 {{index}}",
 		"annotationItem": "주석",
 		"imageItem": "이미지",
-		"emptyText": "빈 텍스트"
+		"emptyText": "빈 텍스트",
+		"blurItem": "블러 {{index}}"
 	},
 	"emptyState": {
 		"noVideo": "불러온 비디오 없음",
diff --git a/src/i18n/locales/tr/editor.json b/src/i18n/locales/tr/editor.json
index c34d64b..0aece8a 100644
--- a/src/i18n/locales/tr/editor.json
+++ b/src/i18n/locales/tr/editor.json
@@ -31,6 +31,15 @@
 		"systemAudioUnavailable": "Sistem sesi kullanılamıyor. Sistem sesi olmadan kaydediliyor.",
 		"microphoneDenied": "Mikrofon erişimi reddedildi. Kayıt ses olmadan devam edecek.",
 		"cameraDenied": "Kamera erişimi reddedildi. Kayıt kamera olmadan devam edecek.",
-		"permissionDenied": "Kayıt izni reddedildi. Lütfen ekran kaydına izin verin."
+		"permissionDenied": "Kayıt izni reddedildi. Lütfen ekran kaydına izin verin.",
+		"cameraDisconnected": "Webcam bağlantısı kesildi.",
+		"cameraNotFound": "Kamera bulunamadı."
+	},
+	"loadingVideo": "Video yükleniyor...",
+	"newRecording": {
+		"title": "Kaydediciye Dön",
+		"description": "Mevcut oturumunuz kaydedildi.",
+		"cancel": "İptal",
+		"confirm": "Onayla"
 	}
 }
diff --git a/src/i18n/locales/tr/launch.json b/src/i18n/locales/tr/launch.json
index f48d99d..177ba3f 100644
--- a/src/i18n/locales/tr/launch.json
+++ b/src/i18n/locales/tr/launch.json
@@ -44,5 +44,11 @@
 	"recording": {
 		"selectSource": "Lütfen kayıt için bir kaynak seçin"
 	},
-	"language": "Dil"
+	"language": "Dil",
+	"systemLanguagePrompt": {
+		"title": "Sistem dilinizi kullanmak ister misiniz?",
+		"description": "Sistem diliniz {{language}} olarak algılandı. OpenScreen i {{language}} diline geçirmek ister misiniz?",
+		"switch": "{{language}} diline geç",
+		"keepDefault": "Mevcut dili koru"
+	}
 }
diff --git a/src/i18n/locales/tr/settings.json b/src/i18n/locales/tr/settings.json
index 7bc60e4..143c467 100644
--- a/src/i18n/locales/tr/settings.json
+++ b/src/i18n/locales/tr/settings.json
@@ -13,7 +13,9 @@
 	"speed": {
 		"playbackSpeed": "Oynatma Hızı",
 		"selectRegion": "Ayarlamak için bir hız bölgesi seçin",
-		"deleteRegion": "Hız Bölgesini Sil"
+		"deleteRegion": "Hız Bölgesini Sil",
+		"customPlaybackSpeed": "Özel Oynatma Hızı",
+		"maxSpeedError": "Hız 16× değerinden yüksek olamaz"
 	},
 	"trim": {
 		"deleteRegion": "Kırpma Bölgesini Sil"
@@ -24,7 +26,9 @@
 		"selectPreset": "Ön ayar seçin",
 		"pictureInPicture": "Resim İçinde Resim",
 		"verticalStack": "Dikey Yığın",
-		"webcamShape": "Kamera Şekli"
+		"webcamShape": "Kamera Şekli",
+		"dualFrame": "Çift Kare",
+		"webcamSize": "Webcam Boyutu"
 	},
 	"effects": {
 		"title": "Video Efektleri",
@@ -132,7 +136,14 @@
 		"invalidImageType": "Geçersiz dosya türü",
 		"imageFormatsOnly": "Lütfen bir JPG, PNG, GIF veya WebP görüntü dosyası yükleyin.",
 		"imageUploadSuccess": "Görüntü başarıyla yüklendi!",
-		"failedImageUpload": "Görüntü yüklenemedi"
+		"failedImageUpload": "Görüntü yüklenemedi",
+		"blurColor": "Bulanıklık Rengi",
+		"blurColorBlack": "Siyah",
+		"blurColorWhite": "Beyaz",
+		"blurType": "Bulanıklık Türü",
+		"blurTypeBlur": "Bulanık",
+		"blurTypeMosaic": "Mozaik Bulanıklık",
+		"mosaicBlockSize": "Mozaik Blok Boyutu"
 	},
 	"fontStyles": {
 		"classic": "Klasik",
diff --git a/src/i18n/locales/zh-CN/settings.json b/src/i18n/locales/zh-CN/settings.json
index 5cffcb5..708ae5e 100644
--- a/src/i18n/locales/zh-CN/settings.json
+++ b/src/i18n/locales/zh-CN/settings.json
@@ -136,7 +136,14 @@
 		"invalidImageType": "无效的文件类型",
 		"imageFormatsOnly": "请上传 JPG、PNG、GIF 或 WebP 格式的图片文件。",
 		"imageUploadSuccess": "图片上传成功！",
-		"failedImageUpload": "上传图片失败"
+		"failedImageUpload": "上传图片失败",
+		"blurColor": "模糊颜色",
+		"blurColorBlack": "黑色",
+		"blurColorWhite": "白色",
+		"blurType": "模糊类型",
+		"blurTypeBlur": "模糊",
+		"blurTypeMosaic": "马赛克模糊",
+		"mosaicBlockSize": "马赛克块大小"
 	},
 	"fontStyles": {
 		"classic": "经典",
diff --git a/src/i18n/locales/zh-TW/editor.json b/src/i18n/locales/zh-TW/editor.json
index 5d948a3..21f3ba6 100644
--- a/src/i18n/locales/zh-TW/editor.json
+++ b/src/i18n/locales/zh-TW/editor.json
@@ -38,6 +38,8 @@
 		"systemAudioUnavailable": "系統音訊不可用。將在無系統音訊的情況下錄製。",
 		"microphoneDenied": "麥克風權限被拒絕。錄製將繼續，但不包含音訊。",
 		"cameraDenied": "攝影機權限被拒絕。錄製將繼續，但不包含攝影機畫面。",
-		"permissionDenied": "錄影權限被拒絕。請允許螢幕錄製。"
+		"permissionDenied": "錄影權限被拒絕。請允許螢幕錄製。",
+		"cameraDisconnected": "網路攝影機已中斷連線。",
+		"cameraNotFound": "找不到攝影機。"
 	}
 }
diff --git a/src/i18n/locales/zh-TW/launch.json b/src/i18n/locales/zh-TW/launch.json
index e8b723f..ea7e625 100644
--- a/src/i18n/locales/zh-TW/launch.json
+++ b/src/i18n/locales/zh-TW/launch.json
@@ -33,5 +33,11 @@
 	"recording": {
 		"selectSource": "請選擇要錄製的來源"
 	},
-	"language": "語言"
+	"language": "語言",
+	"systemLanguagePrompt": {
+		"title": "要使用系統語言嗎？",
+		"description": "偵測到系統語言為 {{language}}。要將 OpenScreen 切換為 {{language}} 嗎？",
+		"switch": "切換為 {{language}}",
+		"keepDefault": "保持目前語言"
+	}
 }
diff --git a/src/i18n/locales/zh-TW/settings.json b/src/i18n/locales/zh-TW/settings.json
index 652ab5a..c93e8d5 100644
--- a/src/i18n/locales/zh-TW/settings.json
+++ b/src/i18n/locales/zh-TW/settings.json
@@ -143,7 +143,14 @@
 		"invalidImageType": "無效的檔案類型",
 		"imageFormatsOnly": "請上傳 JPG、PNG、GIF 或 WebP 格式的圖片檔案。",
 		"imageUploadSuccess": "圖片上傳成功！",
-		"failedImageUpload": "上傳圖片失敗"
+		"failedImageUpload": "上傳圖片失敗",
+		"blurColor": "模糊顏色",
+		"blurColorBlack": "黑色",
+		"blurColorWhite": "白色",
+		"blurType": "模糊類型",
+		"blurTypeBlur": "模糊",
+		"blurTypeMosaic": "馬賽克模糊",
+		"mosaicBlockSize": "馬賽克區塊大小"
 	},
 	"fontStyles": {
 		"classic": "經典",