How to Minimize Latency in IP Cameras
This guide covers the most effective ways to reduce video transmission delay when using BZBGEAR or similar IP cameras. Follow these best practices to achieve the lowest possible latency in your workflow. If you get through this guide and still have issues, please contact support.
1. Connection Type
Use the lowest-latency output available:
- SDI → Connect directly to a capture device or monitor (ideal for real-time monitoring). Ensure the output resolution is compatible with the other devices in the system.
- HDMI → Use a direct connection; avoid converters or additional processing devices. Ensure the output resolution is compatible with the other devices in the system.
- USB → Connect directly to the PC; avoid hubs or long extension cables when possible.
- NDI|HX2 / HX3 → Recommended for low-latency IP workflows over local networks (LAN). Note: For NDI cameras, avoid adding the cameras to busy networks, as network congestion can be an issue.
- Avoid RTSP/RTMP if ultra-low latency is required (these protocols introduce buffering).
Tip: Every conversion step (e.g., RTSP → software → HDMI) adds delay. Keep the signal path as direct as possible.
2. Camera Settings
Optimize Encoding and Stream Configuration
- Set resolution and frame rate appropriate to your workflow.
(Example: 1080p60 is often compatible with most systems. Some systems may require the frame rate to be reduced to 30)
- Use the Main Stream for production output and Sub Stream for monitoring or previews.
- Select CBR (Constant Bitrate) or a tightly limited VBR (Variable Bitrate) for consistent latency.
- Verify network port configuration (correct IP, subnet, and no conflicts).
3. Network Optimization
Follow Best Practices for Wired and Managed Networks
- Always use wired Gigabit Ethernet (Cat6 or higher) for all camera connections.
- Ensure unique IP addresses across all devices.
- If unsure, connect via DHCP, note the assigned IP, then switch to static.
- If unsure, connect via DHCP, note the assigned IP, then switch to static.
- Create a dedicated VLAN for camera traffic on shared networks to reduce congestion. (Only available with managed switches)
- Check your switch port statistics for packet drops or errors. (Only available with managed switches)
4. Common Latency Issues and Fixes
|
Symptom |
Likely Cause |
Quick Fix |
|
1–2 s delay on LAN |
Using RTSP / default buffering |
Switch to NDI or lower buffer settings |
|
Choppy or stuttering video |
Bandwidth congestion |
Enable QoS or lower bitrate on devices |
|
Delay increases over time |
Network buffer buildup |
Restart stream or reduce GOP size |
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