1. What is the Bandwidth Calculation?

The bandwidth calculation estimates the network bandwidth required for CCTV video streams based on resolution, frame rate, and compression factors. It helps in planning network infrastructure for surveillance systems.

2. How Does the Calculator Work?

The calculator uses the bandwidth formula:

Where:

• \( Resolution \) — Total pixels in the video frame
• \( FPS \) — Frames per second
• \( Compression \) — Compression factor (typically 0.07 for H.264)

Explanation: The equation accounts for the data generated per frame, how many frames are transmitted per second, and how much the video stream is compressed.

3. Importance of Bandwidth Calculation

Details: Accurate bandwidth estimation is crucial for designing CCTV networks, ensuring smooth video transmission, and preventing network congestion.

4. Using the Calculator

Tips: Enter resolution in total pixels (width × height), FPS (typically 15-30 for surveillance), and compression factor (0.07 for H.264, 0.02 for H.265). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical compression factor?
A: H.264 typically uses 0.07, while H.265 can achieve 0.02 or better with similar quality.

Q2: How does resolution affect bandwidth?
A: Higher resolutions (4K vs 1080p) exponentially increase bandwidth requirements.

Q3: What's the impact of increasing FPS?
A: Doubling FPS doubles the bandwidth requirement. Most surveillance uses 15-30 FPS.

Q4: Are there other factors affecting bandwidth?
A: Yes - motion in scene, complexity of scene, and encoding settings (CBR vs VBR) also affect bandwidth.

Q5: How can I reduce bandwidth needs?
A: Use more efficient codecs (H.265), lower FPS, or implement motion-activated recording.