diff --git a/bash/record.sh b/bash/record.sh
index af86607..732f273 100755
--- a/bash/record.sh
+++ b/bash/record.sh
@@ -8,5 +8,5 @@ CURRENT_TIME=$(date +"%Y-%m-%d_%H-%M-%S")
 # 构建录像文件名
 OUTPUT_FILE="${OUTPUT_DIR}/${CURRENT_TIME}.mp4"
 # 开始录制RTSP流
-/usr/bin/ffmpeg -rtsp_transport tcp -i "${RTSP_URL}" -c copy -c:a aac -s 1920x1080 -r 15 -crf 35 -b:v 1250k -t "${RECORD_DURATION}" -f mp4 "${OUTPUT_FILE}"
+/usr/bin/ffmpeg -rtsp_transport tcp -i "${RTSP_URL}" -c copy -c:a aac -s 1920x1080 -r 15 -crf 35 -t "${RECORD_DURATION}" -f mp4 "${OUTPUT_FILE}"
 
diff --git a/create_db.py b/create_db.py
index 4007805..a7d086e 100755
--- a/create_db.py
+++ b/create_db.py
@@ -27,4 +27,4 @@ try:
     add(t2)
 except Exception as e:
     print(e)
-    pass
\ No newline at end of file
+    pass
diff --git a/db/repository/__pycache__/lot_data_repository.cpython-310.pyc b/db/repository/__pycache__/lot_data_repository.cpython-310.pyc
index c84e297..7e1c1f0 100644
Binary files a/db/repository/__pycache__/lot_data_repository.cpython-310.pyc and b/db/repository/__pycache__/lot_data_repository.cpython-310.pyc differ
diff --git a/db/repository/lot_data_repository.py b/db/repository/lot_data_repository.py
index 2647c6b..a8f55cd 100755
--- a/db/repository/lot_data_repository.py
+++ b/db/repository/lot_data_repository.py
@@ -36,8 +36,8 @@ def get_kb_detail_by_time(session, start_time, end_time):
 
 # 删除数据
 @with_session
-def delete_kb_detail_by_time(session, start_time, end_time):
-    d = session.query(LOT_DATA_MODEL).filter(start_time <= LOT_DATA_MODEL.create_time, LOT_DATA_MODEL.create_time <= end_time).delete()
+def delete_kb_detail_by_time(session, end_time):
+    d = session.query(LOT_DATA_MODEL).filter(LOT_DATA_MODEL.create_time <= end_time).delete()
     return d
 
 
diff --git a/delete_lot_data_3_days.py b/delete_lot_data_3_days.py
new file mode 100644
index 0000000..1acc510
--- /dev/null
+++ b/delete_lot_data_3_days.py
@@ -0,0 +1,17 @@
+# 删除lot_data.db 保留三天的数据
+import datetime
+
+from db.repository import delete_kb_detail_by_time
+
+
+def delete_data_3_days_ago():
+    try:
+        # 计算3天前的日期并转化为数据库格式
+        end_time = int((datetime.datetime.now() - datetime.timedelta(days=3)).timestamp())
+        d = delete_kb_detail_by_time(end_time)
+    except Exception as e:
+        pass
+
+
+if __name__ == '__main__':
+    delete_data_3_days_ago()