add format convert support

src-tauri/src/commands.rs

@@ -77,7 +77,7 @@ pub async fn start_download(app: AppHandle, url: String, options: DownloadOption
             output_path: output_dir, 
             timestamp: chrono::Utc::now(),
             status: status.to_string(),
-            format: options.quality,
+            format: options.output_format,
         };
         
         let _ = storage::add_history_item(&app, item);

src-tauri/src/downloader.rs

@@ -36,6 +36,7 @@ pub struct DownloadOptions {
     pub is_audio_only: bool,
     pub quality: String, // e.g., "1080", "720", "best"
     pub output_path: String, // Directory
+    pub output_format: String, // "original", "mp4", "webm", "mkv", "m4a", "aac", "opus", "vorbis", "wav", etc.
 }
 
 #[derive(Serialize, Clone, Debug)]
@@ -188,8 +189,11 @@ pub async fn download_video(
     // Formats
     if options.is_audio_only {
         args.push("-x".to_string());
-        args.push("--audio-format".to_string());
-        args.push("mp3".to_string());
+        // Only set audio format if not "original"
+        if options.output_format != "original" {
+            args.push("--audio-format".to_string());
+            args.push(options.output_format.clone());
+        }
     } else {
         let format_arg = if options.quality == "best" {
             "bestvideo+bestaudio/best".to_string()
@@ -198,6 +202,12 @@ pub async fn download_video(
         };
         args.push("-f".to_string());
         args.push(format_arg);
+        
+        // Only set merge output format if not "original"
+        if options.output_format != "original" {
+            args.push("--merge-output-format".to_string());
+            args.push(options.output_format.clone());
+        }
     }
 
     // Progress output

src-tauri/tauri.conf.json

@@ -12,7 +12,7 @@
   "app": {
     "windows": [
       {
-        "title": "流萤 - 视频下载",
+        "title": "流萤 - 视频下载 v1.0.0",
         "width": 1300,
         "height": 900
       }