Communication Protocols in CCTV

Communication Protocols in CCTV

1. RTSP (Real-Time Streaming Protocol)
• Purpose: Controls streaming media servers.
• Use Case: Used to establish and control media sessions between IP cameras and viewing devices (e.g., NVRs, VMS).
• Example: An NVR requests a live video stream from a camera using RTSP.

2. RTP (Real-Time Transport Protocol)
• Purpose: Delivers audio and video over IP networks.
• Use Case: Works alongside RTSP to actually carry the media stream (video/audio).
• Example: Video from an IP camera is transmitted to a monitoring client in real time using RTP.

3. UDP (User Datagram Protocol)
• Purpose: Lightweight, low-latency data transmission protocol.
• Use Case: Used for live streaming video where occasional packet loss is acceptable (e.g., real-time preview).
• Example: Sending video from a camera to a client over a local network quickly with less overhead.

4. TCP (Transmission Control Protocol)
• Purpose: Reliable, connection-oriented protocol.
• Use Case: Used for configuration, file transfers, or video playback where reliability is more important than speed.
• Example: Downloading recorded video from an IP camera/NVR.

5. HTTP (Hypertext Transfer Protocol)
• Purpose: Transfers data over the web.
• Use Case: Used to access web interfaces of IP cameras or transmit metadata like logs or images.
• Example: Logging into a camera’s web interface using a browser.

6. HTTPS (Secure HTTP)
• Purpose: Encrypted version of HTTP.
• Use Case: Securely accessing camera interfaces or sending confidential data.
• Example: Remote access to a camera with login protection via HTTPS.

7. ONVIF (Open Network Video Interface Forum)
• Purpose: Standardizes communication between IP-based security devices.
• Use Case: Allows interoperability between cameras and VMS/NVRs from different vendors.
• Example: Adding a third-party IP camera to a compatible NVR using ONVIF discovery.

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Source: LinkedIn

Credits: Mr. Muhmmad Yousuf Ahmad Adam