[SPOTMOD] Primary stream usage in Multi CH View (FREEZING AND SLUGGISH SYMPTOM)

Description

This is a common complaint in the field.

DW-HDSPOTMOD16: 1.6.0.8

Environment:

  • Number of VMAX Channels: 2 (1 Analog A1, 1 IP)

  • Number of Spectrum RTSP Streams: 14 with logical ID.

  • Camera Stream Configuration:

    • Main Stream Bitrate: 5 Mbps

    • Sub-Stream Bitrate: ~214 Kbps (lowest resolution)

  • Example RTSP URLs:

    • rtsp://192.168.96.193:7001/1?stream=0 (Main stream)

    • rtsp://192.168.96.193:7001/1?stream=1 (Sub stream)


Observed Behavior:

  • Total bandwidth usage by Spot Module does not exceed 80 Mbps.

  • CPU usage does not exceed 20%

  • Single-channel view functions correctly with no observed issues.

  • In multi-channel view:

    • Some cameras correctly utilize the sub-stream.

    • Other cameras unexpectedly continue to use the main stream, causing freezing and sluggish view.

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Child issues

Linked work items

Activity

FOCUS_JH 10 October 2025, 05:31

SPOT은 4분할 이상은 성능때문에 모두 2nd Stream 으로 출력되게 되어있습니다.

기능적으로 2nd Stream 이 잘 연결이 안될 경우 1st Stream 으로 접속 되게 되어있는데.

아마 일부 CH들이 아래 조건에 의해 1st Stream 으로 출력하다 보니 디코딩 성능이 안나와서 발생하는 문제 같습니다.

(1) 해당 CH이 2nd Stream 이 없거나,

(2) 해당 CH이 2nd Stream 이 1920*1080 이상이거나

(3) 해당 CH이 2nd Stream 이 연결이 잘 안되는 상태이거나

*해당 Spectrum 에 등록된 CH의 2nd Stream 상태 확인이 필요합니다.