update recording feature saat status IN/OUT

env.example

@@ -87,14 +87,32 @@ MOTION_MIN_AREA_FRAC=0.002
 MOTION_HEARTBEAT_FRAMES=15
 MOTION_THRESHOLD=5.0
 
-# --- Video recording ---
+# --- Video recording (ByteTrack-style session) ---
+# When true, record raw frames for each counting session
 RECORD_VIDEO=false
+# session = encode in SHM, start on webhook IN/OUT (or control ON), stop on OFF
+# segment = legacy continuous hourly files under OUTPUT_DIR
+RECORD_MODE=session
+# Pending MP4 while session is active (tmpfs / RAM)
+SHM_DIR=/dev/shm/zenai-kpc-counter
+# Finished MP4 destination (use NFS mount here if desired). Defaults to OUTPUT_DIR.
+VIDEO_OUTPUT_DIR=/opt/zenai-kpc-counter
+# Extra seconds to keep recording after session end (IN/OUT → OFF)
+RECORD_END_DELAY=1
+# Delete pending clip if no object was counted during the session
+RECORD_DISCARD_EMPTY=true
+# Delete day folders under VIDEO_OUTPUT_DIR older than this many days (0 = off)
+RECORD_RETENTION_DAYS=3
+# H.264 quality via OpenCV FFmpeg writer (empty = default). Lower CRF = better.
+RECORD_CRF=18
+RECORD_PRESET=slow
+# Legacy segment length (only when RECORD_MODE=segment)
 VIDEO_SEGMENT_SEC=3600
 OUTPUT_FPS=15
 
 # --- Runtime control (start/stop counting on the fly) ---
 CONTROL_ENABLED=false
-CONTROL_FILE=/opt/bytetrack-counter/control.json
+CONTROL_FILE=/opt/zenai-kpc-counter/control.json
 CONTROL_DEFAULT_COUNTING=true
 CONTROL_POLL_SEC=1.0
 CONTROL_SOCKET_ENABLED=false