diff --git a/fam-edge/src/fam_edge/video_processor.py b/fam-edge/src/fam_edge/video_processor.py
index c326ef5..ef3b4f3 100644
--- a/fam-edge/src/fam_edge/video_processor.py
+++ b/fam-edge/src/fam_edge/video_processor.py
@@ -24,7 +24,21 @@ logger = setup_logger('fam-edge.video_processor')
 
 
 def _parse_event_start_from_filename(filename: str) -> str:
-    """从监控文件名解析开始时间（北京时间）。示例: 2026-08-21_081500.mp4"""
+    """从监控文件名解析开始时间（北京时间）。
+
+    支持格式:
+      - 2026-08-21_081500.mp4 / 20260821_081500.mp4（带/不带分隔符日期）
+      - Generic_ONVIF-001-20260820-140416-xxx.mp4（纯数字 YYYYMMDD-HHMMSS）
+    """
+    # 纯数字: YYYYMMDD-HHMMSS 或 YYYYMMDDHHMMSS（监控录像文件名格式）
+    m0 = re.search(r'(\d{4})(\d{2})(\d{2})[-_]?(\d{2})(\d{2})(\d{2})', filename)
+    if m0:
+        y, mo, d, hh, mm, ss = m0.groups()
+        try:
+            dt = datetime(int(y), int(mo), int(d), int(hh), int(mm), int(ss))
+            return dt.strftime('%Y-%m-%d %H:%M:%S')
+        except ValueError:
+            pass
     m = re.search(r'(\d{4})[-_](\d{2})[-_](\d{2})[_-]?(\d{2})(\d{2})(\d{2})', filename)
     if m:
         y, mo, d, hh, mm, ss = m.groups()
@@ -50,10 +64,19 @@ def _parse_event_ts(ts: str, start_dt):
     m = re.match(r'^(\d{1,2}):(\d{2}):(\d{2})$', ts)
     if m:
         off = int(m.group(1)) * 3600 + int(m.group(2)) * 60 + int(m.group(3))
+        # 启发式：监控单段通常 ≤1h，相对时间超过 6h 视为模型误输出绝对时间（无日期），不强行定位
+        if off <= 6 * 3600:
+            if start_dt is not None:
+                abs_ts = (start_dt + timedelta(seconds=off)).strftime('%Y-%m-%d %H:%M:%S')
+                return abs_ts, float(off)
+            return ts, float(off)
         if start_dt is not None:
-            abs_ts = (start_dt + timedelta(seconds=off)).strftime('%Y-%m-%d %H:%M:%S')
-            return abs_ts, float(off)
-        return ts, float(off)
+            try:
+                ev_dt = datetime.strptime(ts[:19], '%Y-%m-%d %H:%M:%S')
+                return ts, (ev_dt - start_dt).total_seconds()
+            except ValueError:
+                pass
+        return ts, 0.0
     if start_dt is not None:
         try:
             ev_dt = datetime.strptime(ts[:19], '%Y-%m-%d %H:%M:%S')