extra ffmpeg params to reduce latency

frigate/video.py

@@ -21,6 +21,9 @@ def fetch_frames(shared_arr, shared_frame_time, frame_lock, frame_ready, frame_s
     ffmpeg_cmd = ['ffmpeg', 
         '-hide_banner', '-loglevel', 'panic',
         '-avoid_negative_ts', 'make_zero', 
+        '-fflags', 'nobuffer',
+        '-flags', 'low_delay',
+        '-strict', 'experimental',
         '-fflags', '+genpts', 
         '-rtsp_transport', 'tcp', 
         '-stimeout', '5000000',