diff --git a/controller/api/bilirecorder_blueprint.py b/controller/api/bilirecorder_blueprint.py
index 83ee66d..812b1ba 100644
--- a/controller/api/bilirecorder_blueprint.py
+++ b/controller/api/bilirecorder_blueprint.py
@@ -100,10 +100,12 @@ def safe_create_item():
     if bili_record_workflow_item is None:
         bili_record_workflow_item = Workflow()
     elif bili_record_workflow_item.id is not None:
-            bili_record_workflow_item.editing = False
-            commit_item()
-            auto_submit_task()
-            bili_record_workflow_item = Workflow()
+        bili_record_workflow_item.editing = False
+        if bili_record_workflow_item.name is None:
+            bili_record_workflow_item.name = VIDEO_TITLE.format(datetime.utcnow().strftime("%Y%m%d"))
+        commit_item()
+        auto_submit_task()
+        bili_record_workflow_item = Workflow()
     else:
         bili_record_workflow_item.name = VIDEO_TITLE.format(datetime.utcnow().strftime("%Y%m%d"))
     bili_record_workflow_item.automatic = True
@@ -165,6 +167,14 @@ def collect_danmaku_files(workflow: Optional[Workflow]):
                 if bias < -600:
                     print("弹幕文件", danmaku_file, "反向偏移超过10分钟")
                     continue
+                if len(clip.danmaku_clips) > 0:
+                    matched = False
+                    for d in clip.danmaku_clips:
+                        if relpath == d.file:
+                            matched = True
+                            break
+                    if matched:
+                        continue
                 danmaku = DanmakuClip()
                 danmaku.file = relpath
                 danmaku.base_path = XIGUALIVE_RECORDER_DIRECTORY