bgm音量支持配置

web/app.py

@@ -457,6 +457,21 @@ def main():
                 label_visibility="collapsed"
             )
             
+            # BGM volume slider (only show when BGM is selected)
+            if bgm_choice != tr("bgm.none"):
+                bgm_volume = st.slider(
+                    tr("bgm.volume"),
+                    min_value=0.0,
+                    max_value=0.5,
+                    value=0.2,
+                    step=0.01,
+                    format="%.2f",
+                    key="bgm_volume_slider",
+                    help=tr("bgm.volume_help")
+                )
+            else:
+                bgm_volume = 0.2  # Default value when no BGM selected
+            
             # BGM preview button (only if BGM is not "None")
             if bgm_choice != tr("bgm.none"):
                 if st.button(tr("bgm.preview"), key="preview_bgm", use_container_width=True):
@@ -1280,6 +1295,7 @@ def main():
                         "frame_template": frame_template,
                         "prompt_prefix": prompt_prefix,
                         "bgm_path": bgm_path,
+                        "bgm_volume": bgm_volume if bgm_path else 0.2,
                         "progress_callback": update_progress,
                     }
                     

web/i18n/locales/en_US.json

@@ -126,6 +126,8 @@
     
     "bgm.selector": "Music Selection",
     "bgm.none": "🔇 No BGM",
+    "bgm.volume": "Volume",
+    "bgm.volume_help": "Adjust background music volume (0.0 = muted, 1.0 = original volume)",
     "bgm.preview": "▶ Preview Music",
     "bgm.preview_failed": "❌ Music file not found: {file}",
     "bgm.what": "Adds background music to your video, making it more atmospheric and professional",

web/i18n/locales/zh_CN.json

@@ -126,6 +126,8 @@
     
     "bgm.selector": "音乐选择",
     "bgm.none": "🔇 无背景音乐",
+    "bgm.volume": "音量",
+    "bgm.volume_help": "调整背景音乐的音量（0.0 = 静音，1.0 = 原始音量）",
     "bgm.preview": "▶ 试听音乐",
     "bgm.preview_failed": "❌ 音乐文件未找到：{file}",
     "bgm.what": "为视频添加背景音乐，让视频更有氛围感和专业性",