Add default video quality & subtitles settings

Introduce a "Default Selection Settings" group in the Download Settings dialog to let users specify a default video resolution (height) and default subtitle language(s). Adds labeled QLineEdit inputs with placeholders and explanatory help text, uses localized strings for labels, and persists values to ConfigManager under keys "default_video_quality" and "default_subtitle_language" when saving.

ytsage/gui/ytsage_gui_dialogs/ytsage_dialogs_settings.py

@@ -376,6 +376,39 @@ class DownloadSettingsDialog(QDialog):
 
         audio_format_group_box.setLayout(audio_format_layout)
         format_layout.addWidget(audio_format_group_box)
+
+        # --- Default Quality and Subtitles Section ---
+        defaults_group_box = QGroupBox(_("settings.defaults_settings", default="Default Selection Settings"))
+        defaults_layout = QVBoxLayout()
+        
+        # Default Video Quality
+        vid_qual_layout = QHBoxLayout()
+        vid_qual_label = QLabel(_("settings.default_video_quality", default="Default Video Resolution (Height):"))
+        vid_qual_label.setStyleSheet("color: #ffffff; margin-top: 5px;")
+        self.default_vid_qual_input = QLineEdit(str(ConfigManager.get("default_video_quality") or ""))
+        self.default_vid_qual_input.setPlaceholderText("e.g. 1080 or 720")
+        vid_qual_layout.addWidget(vid_qual_label)
+        vid_qual_layout.addWidget(self.default_vid_qual_input)
+        defaults_layout.addLayout(vid_qual_layout)
+
+        # Default Subtitles
+        sub_layout = QHBoxLayout()
+        sub_label = QLabel(_("settings.default_subtitle_language", default="Default Subtitle Language(s):"))
+        sub_label.setStyleSheet("color: #ffffff; margin-top: 5px;")
+        self.default_sub_input = QLineEdit(ConfigManager.get("default_subtitle_language") or "")
+        self.default_sub_input.setPlaceholderText("e.g. en, es")
+        sub_layout.addWidget(sub_label)
+        sub_layout.addWidget(self.default_sub_input)
+        defaults_layout.addLayout(sub_layout)
+
+        defaults_help = QLabel(_("settings.defaults_help", default="Set your preferred video height and subtitle languages (comma-separated). They will be auto-selected if available."))
+        defaults_help.setWordWrap(True)
+        defaults_help.setStyleSheet("color: #cccccc; margin: 5px; font-size: 11px;")
+        defaults_layout.addWidget(defaults_help)
+
+        defaults_group_box.setLayout(defaults_layout)
+        format_layout.addWidget(defaults_group_box)
+
         format_layout.addStretch()
 
         # === File Tab ===
@@ -580,6 +613,12 @@ class DownloadSettingsDialog(QDialog):
             ConfigManager.set("preferred_audio_format", preferred_audio_format)
             ConfigManager.set("audio_normalization", audio_normalization)
 
+            # Save defaults
+            default_vid = self.default_vid_qual_input.text().strip()
+            ConfigManager.set("default_video_quality", default_vid if default_vid else None)
+            default_sub = self.default_sub_input.text().strip()
+            ConfigManager.set("default_subtitle_language", default_sub if default_sub else None)
+
             # Save filename format
             filename_format = self.get_filename_format()
             if filename_format: