diff --git a/fam-edge/src/fam_edge/video_processor.py b/fam-edge/src/fam_edge/video_processor.py
index 0c8e9b0..a227598 100644
--- a/fam-edge/src/fam_edge/video_processor.py
+++ b/fam-edge/src/fam_edge/video_processor.py
@@ -246,9 +246,9 @@ class VideoProcessor:
             vmeta = None
 
         vrow = self.db.get_video_by_filename(filename)
-        is_motion_clip = bool(vrow and vrow.get('motion_event_id'))
-        camera_name = (vrow or {}).get('camera_name') or ''
-        event_start = (vrow or {}).get('event_start_time') or ''
+        is_motion_clip = bool(vrow and vrow['motion_event_id'])
+        camera_name = vrow['camera_name'] if vrow else ''
+        event_start = vrow['event_start_time'] if vrow else ''
         if not event_start and self.parse_start:
             event_start = _parse_event_start_from_filename(filename)
             if event_start:
@@ -380,7 +380,7 @@ class VideoProcessor:
         音频按配置保留（pcm_alaw -> aac 转码）或丢弃（-an）。"""
         import shutil
         ffmpeg = shutil.which('ffmpeg') or 'ffmpeg'
-        args = ['-y', '-hide_banner', '-loglevel', 'error',
+        args = [ffmpeg, '-y', '-hide_banner', '-loglevel', 'error',
                 '-ss', f'{offset:.3f}', '-i', src_path, '-t', f'{dur:.3f}',
                 '-c:v', 'copy']
         if self.motion_keep_audio: