diff --git a/controller/api/bilirecorder_blueprint.py b/controller/api/bilirecorder_blueprint.py
index 8a37585..b3f88ea 100644
--- a/controller/api/bilirecorder_blueprint.py
+++ b/controller/api/bilirecorder_blueprint.py
@@ -2,18 +2,19 @@ import os.path
 import threading
 from datetime import datetime
 from glob import glob
-from flask import Blueprint, jsonify, request, current_app
 from typing import Optional
 
+from flask import Blueprint, jsonify, request, current_app
+
 from config import BILILIVE_RECORDER_DIRECTORY, VIDEO_TITLE, XIGUALIVE_RECORDER_DIRECTORY
+from exception.danmaku import DanmakuException
 from model import db
 from model.DanmakuClip import DanmakuClip
 from model.VideoClip import VideoClip
 from model.Workflow import Workflow
-from workflow.worker import do_workflow
 from workflow.danmaku import get_file_start
 from workflow.video import get_video_real_duration
-from exception.danmaku import DanmakuException
+from workflow.worker import do_workflow
 
 blueprint = Blueprint("api_bilirecorder", __name__, url_prefix="/api/bilirecorder")
 
@@ -25,12 +26,14 @@ def auto_submit_task():
     if bili_record_workflow_item is None:
         return
     if not bili_record_workflow_item.editing:
-        if len(bili_record_workflow_item.video_clips) > 0 and len(bili_record_workflow_item.danmaku_clips) > 0:
-            threading.Thread(target=do_workflow, args=(
-                bili_record_workflow_item.video_clips[0].full_path,
-                bili_record_workflow_item.danmaku_clips[0].full_path,
-                *[clip.full_path for clip in bili_record_workflow_item.danmaku_clips[1:]]
-            )).start()
+        if len(bili_record_workflow_item.video_clips) > 0:
+            for video_clip in bili_record_workflow_item.video_clips:
+                if len(video_clip.danmaku_clips) > 0:
+                    threading.Thread(target=do_workflow, args=(
+                        video_clip.full_path,
+                        video_clip.danmaku_clips[0].full_path,
+                        *[clip.full_path for clip in video_clip.danmaku_clips[1:]]
+                    )).start()
             clear_item()
 
 
@@ -98,9 +101,9 @@ def collect_danmaku_files(workflow: Optional[Workflow]):
                 danmaku.file = relpath
                 danmaku.base_path = BILILIVE_RECORDER_DIRECTORY
                 danmaku.offset = 0
-                danmaku.workflow = workflow
+                danmaku.video_clip = clip
                 db.session.add(danmaku)
-                workflow.danmaku_clips.append(danmaku)
+                clip.danmaku_clips.append(danmaku)
         if start_time_ts is None:
             if clip.duration is None or clip.duration == 0:
                 clip.duration = get_video_real_duration(clip.full_path)
@@ -123,9 +126,9 @@ def collect_danmaku_files(workflow: Optional[Workflow]):
                 danmaku.file = relpath
                 danmaku.base_path = XIGUALIVE_RECORDER_DIRECTORY
                 danmaku.offset = bias
-                danmaku.workflow = workflow
+                danmaku.video_clip = clip
                 db.session.add(danmaku)
-                workflow.danmaku_clips.append(danmaku)
+                clip.danmaku_clips.append(danmaku)
     commit_item()
 
 
diff --git a/model/DanmakuClip.py b/model/DanmakuClip.py
index df96539..cb5f690 100644
--- a/model/DanmakuClip.py
+++ b/model/DanmakuClip.py
@@ -2,8 +2,9 @@ import os
 from typing import TYPE_CHECKING
 
 from . import db
+
 if TYPE_CHECKING:
-    from .Workflow import Workflow
+    from .VideoClip import VideoClip
 
 
 class DanmakuClip(db.Model):
@@ -11,8 +12,8 @@ class DanmakuClip(db.Model):
     base_path = db.Column(db.String(255))
     file = db.Column(db.String(255))
     offset = db.Column(db.Float, nullable=False, default=0)
-    workflow_id = db.Column(db.Integer, db.ForeignKey('workflow.id'))
-    workflow: "Workflow" = db.relationship("Workflow", uselist=False, backref=db.backref("danmaku_clips"))
+    video_clip_id = db.Column(db.Integer, db.ForeignKey('video_clip.id'))
+    video_clip: "VideoClip" = db.relationship("VideoClip", uselist=False, backref=db.backref("danmaku_clips"))
 
     @property
     def full_path(self):
diff --git a/model/VideoClip.py b/model/VideoClip.py
index 2dc5a36..71f16ef 100644
--- a/model/VideoClip.py
+++ b/model/VideoClip.py
@@ -2,11 +2,15 @@ import os.path
 from typing import TYPE_CHECKING
 
 from . import db
+
 if TYPE_CHECKING:
     from .Workflow import Workflow
+    from .DanmakuClip import DanmakuClip
 
 
 class VideoClip(db.Model):
+    danmaku_clips: list["DanmakuClip"]
+
     id = db.Column(db.Integer, primary_key=True, autoincrement=True)
     base_path = db.Column(db.String(255))
     file = db.Column(db.String(255))
@@ -30,4 +34,5 @@ class VideoClip(db.Model):
             "duration": self.duration,
             "offset": self.offset,
             "workflow_id": self.workflow_id,
+            "danmaku_clips": [i.to_json() for i in self.danmaku_clips],
         }
diff --git a/model/Workflow.py b/model/Workflow.py
index 1d8510e..7496352 100644
--- a/model/Workflow.py
+++ b/model/Workflow.py
@@ -2,15 +2,14 @@ from datetime import datetime, timedelta
 from typing import TYPE_CHECKING
 
 from . import db
+
 if TYPE_CHECKING:
     from .VideoClip import VideoClip
     from .VideoPart import VideoPart
-    from .DanmakuClip import DanmakuClip
 
 
 class Workflow(db.Model):
     video_clips: list["VideoClip"]
-    danmaku_clips: list["DanmakuClip"]
     video_parts: list["VideoPart"]
 
     id = db.Column(db.Integer, primary_key=True, autoincrement=True)
@@ -42,5 +41,4 @@ class Workflow(db.Model):
             "editing": self.editing,
             "start_after_time": self.start_after_time.strftime("%Y/%m/%d %H:%M:%S") if self.start_after_time else None,
             "video_clips": [i.to_json() for i in self.video_clips],
-            "danmaku_clips": [i.to_json() for i in self.danmaku_clips],
         }