1. Added multi-language support to the UI

2. Optimized the voice name
3. Other UI optimizations

webui/i18n/en.json

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+{
+  "Language": "English",
+  "Translation": {
+    "Video Script Settings": "**Video Script Settings**",
+    "Video Subject": "Video Subject (Provide a keyword, :red[AI will automatically generate] video script)",
+    "Script Language": "Language for Generating Video Script (AI will automatically output based on the language of your subject)",
+    "Generate Video Script and Keywords": "Click to use AI to generate 【Video Script】 and 【Video Keywords】 based on **subject**",
+    "Auto Detect": "Auto Detect",
+    "Video Script": "Video Script (:blue[① Optional, AI generated  ② Proper punctuation helps with subtitle generation])",
+    "Generate Video Keywords": "Click to use AI to generate 【Video Keywords】 based on **script**",
+    "Please Enter the Video Subject": "Please Enter the Video Script First",
+    "Generating Video Script and Keywords": "AI is generating video script and keywords...",
+    "Generating Video Keywords": "AI is generating video keywords...",
+    "Video Keywords": "Video Keywords (:blue[① Optional, AI generated ② Use **English commas** for separation, English only])",
+    "Video Settings": "**Video Settings**",
+    "Video Concat Mode": "Video Concatenation Mode",
+    "Random": "Random Concatenation (Recommended)",
+    "Sequential": "Sequential Concatenation",
+    "Video Ratio": "Video Aspect Ratio",
+    "Portrait": "Portrait 9:16",
+    "Landscape": "Landscape 16:9",
+    "Clip Duration": "Maximum Duration of Video Clips (seconds)",
+    "Number of Videos Generated Simultaneously": "Number of Videos Generated Simultaneously",
+    "Audio Settings": "**Audio Settings**",
+    "Speech Synthesis": "Speech Synthesis Voice",
+    "Male": "Male",
+    "Female": "Female",
+    "Background Music": "Background Music",
+    "No Background Music": "No Background Music",
+    "Random Background Music": "Random Background Music",
+    "Custom Background Music": "Custom Background Music",
+    "Custom Background Music File": "Please enter the file path for custom background music:",
+    "Background Music Volume": "Background Music Volume (0.2 represents 20%, background music should not be too loud)",
+    "Subtitle Settings": "**Subtitle Settings**",
+    "Enable Subtitles": "Enable Subtitles (If unchecked, the settings below will not take effect)",
+    "Font": "Subtitle Font",
+    "Position": "Subtitle Position",
+    "Top": "Top",
+    "Center": "Middle",
+    "Bottom": "Bottom (Recommended)",
+    "Font Size": "Subtitle Font Size",
+    "Font Color": "Subtitle Font Color",
+    "Stroke Color": "Subtitle Outline Color",
+    "Stroke Width": "Subtitle Outline Width",
+    "Generate Video": "Generate Video",
+    "Video Script and Subject Cannot Both Be Empty": "Video Subject and Video Script cannot both be empty",
+    "Generating Video": "Generating video, please wait...",
+    "Start Generating Video": "Start Generating Video",
+    "Video Generation Completed": "Video Generation Completed"
+  }
+}

webui/i18n/zh.json

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+{
+  "Language": "简体中文",
+  "Translation": {
+    "Video Script Settings": "**文案设置**",
+    "Video Subject": "视频主题（给定一个关键词，:red[AI自动生成]视频文案）",
+    "Script Language": "生成视频脚本的语言（一般情况AI会自动根据你输入的主题语言输出）",
+    "Generate Video Script and Keywords": "点击使用AI根据**主题**生成 【视频文案】 和 【视频关键词】",
+    "Auto Detect": "自动检测",
+    "Video Script": "视频文案（:blue[①可不填，使用AI生成  ②合理使用标点断句，有助于生成字幕]）",
+    "Generate Video Keywords": "点击使用AI根据**文案**生成【视频关键词】",
+    "Please Enter the Video Subject": "请先填写视频文案",
+    "Generating Video Script and Keywords": "AI正在生成视频文案和关键词...",
+    "Generating Video Keywords": "AI正在生成视频关键词...",
+    "Video Keywords": "视频关键词（:blue[①可不填，使用AI生成 ②用**英文逗号**分隔，只支持英文]）",
+    "Video Settings": "**视频设置**",
+    "Video Concat Mode": "视频拼接模式",
+    "Random": "随机拼接（推荐）",
+    "Sequential": "顺序拼接",
+    "Video Ratio": "视频比例",
+    "Portrait": "竖屏 9:16（抖音视频）",
+    "Landscape": "横屏 16:9（西瓜视频）",
+    "Clip Duration": "视频片段最大时长(秒)",
+    "Number of Videos Generated Simultaneously": "同时生成视频数量",
+    "Audio Settings": "**音频设置**",
+    "Speech Synthesis": "朗读声音",
+    "Male": "男性",
+    "Female": "女性",
+    "Background Music": "背景音乐",
+    "No Background Music": "无背景音乐",
+    "Random Background Music": "随机背景音乐",
+    "Custom Background Music": "自定义背景音乐",
+    "Custom Background Music File": "请输入自定义背景音乐的文件路径",
+    "Background Music Volume": "背景音乐音量（0.2表示20%，背景声音不宜过高）",
+    "Subtitle Settings": "**字幕设置**",
+    "Enable Subtitles": "启用字幕（若取消勾选，下面的设置都将不生效）",
+    "Font": "字幕字体",
+    "Position": "字幕位置",
+    "Top": "顶部",
+    "Center": "中间",
+    "Bottom": "底部（推荐）",
+    "Font Size": "字幕大小",
+    "Font Color": "字幕颜色",
+    "Stroke Color": "描边颜色",
+    "Stroke Width": "描边粗细",
+    "Generate Video": "生成视频",
+    "Video Script and Subject Cannot Both Be Empty": "视频主题 和 视频文案，不能同时为空",
+    "Generating Video": "正在生成视频，请稍候...",
+    "Start Generating Video": "开始生成视频",
+    "Video Generation Completed": "视频生成完成"
+  }
+}