Fix recording

config.env.example

@@ -138,6 +138,8 @@ RECORD_VIDEO=false
 OUTPUT_FPS=15
 # Delay in seconds after batch starts before recording begins (every batch)
 RECORD_DELAY_SECONDS=10
+# Extra seconds to keep recording after batch end signal before stopping
+RECORD_END_DELAY=1
 # Shared memory directory for recording (fast write, moved to OUTPUT_DIR on close)
 RECORD_SHM_DIR=/dev/shm/bytetrack-counter