Network Diagnostics

Network issues are the most common cause of production problems. pMix provides detailed network diagnostics for each source.

Packet loss

Packet loss is the most important network metric. It’s displayed as a ratio:

  • “0/10000 (0.0%)” — Perfect, no lost packets
  • “3/5000 (0.1%)” — Minor loss, usually acceptable
  • “50/5000 (1.0%)” — Significant loss, may cause visible artifacts
  • >1% — Serious network problems, expect frame drops and glitches

The ratio format (e.g., “3/5000”) shows actual lost packets vs total, making it easy to gauge whether a percentage represents a real problem or a statistical artifact.

Bitrate

Per-source incoming bitrate shows how much data each source is sending:

  • iPhone camera (WebRTC): ~4–7 Mbps typical
  • iPhone camera (SRT): ~3–5 Mbps typical
  • NDI (full): ~100–150 Mbps for 1080p60
  • **NDI HX:** ~10–20 Mbps

If a source’s bitrate drops unexpectedly, it may indicate network congestion or source-side issues.

Latency

End-to-end latency from source capture to display on the iPad:

  • iPhone (WebRTC): ~100–200 ms typical
  • iPhone (SRT): ~180–300 ms typical
  • NDI (local): ~30–60 ms typical

Higher-than-expected latency usually indicates network congestion or Wi-Fi interference.

Diagnosing common network problems

High packet loss on iPhone cameras

  1. Check Wi-Fi signal strength — move closer to the router
  2. Switch from 2.4 GHz to 5 GHz
  3. Reduce interference — disable other Wi-Fi devices
  4. Use a dedicated production router

Inconsistent bitrate

  1. Check for network congestion from other devices
  2. Verify the Wi-Fi band and channel
  3. Try a wired connection (USB-C Ethernet adapter)

High latency

  1. Switch to 5 GHz Wi-Fi
  2. Reduce network hops — connect directly to the router, not through extenders
  3. Disable VPN on all production devices