Problem
A wireless HDMI system adds variable latency that makes lip movement appear slightly delayed on the presenter monitor.
Solution
Root Cause / Diagnostic:
Consumer wireless HDMI transmitters operating on 5GHz Wi-Fi frequencies utilize dynamic frame compression and packet buffering, introducing 60ms–150ms of variable latency that manifests as visible audio-video sync lag on talent monitors.
Actionable Fix:
1. Replace Wi-Fi-based wireless links with a zero-latency uncompressed RF transmission system (such as Teradek Bolt or Hollyland Cosmo) operating under 1ms delay.
2. Hardwire the presenter's confidence monitor via a direct high-speed HDMI or SDI cable run rather than relying on wireless links for talent feedback.
3. Perform a clap test in front of the lens while viewing the talent monitor to confirm synchronization within 1/2 frame of motion.
Pro Tip:
Reserve wireless video systems for roaming director monitors and client iPads; always maintain hardwired copper/SDI lines for teleprompters, confidence monitors, and live switching feeds.
Consumer wireless HDMI transmitters operating on 5GHz Wi-Fi frequencies utilize dynamic frame compression and packet buffering, introducing 60ms–150ms of variable latency that manifests as visible audio-video sync lag on talent monitors.
Actionable Fix:
1. Replace Wi-Fi-based wireless links with a zero-latency uncompressed RF transmission system (such as Teradek Bolt or Hollyland Cosmo) operating under 1ms delay.
2. Hardwire the presenter's confidence monitor via a direct high-speed HDMI or SDI cable run rather than relying on wireless links for talent feedback.
3. Perform a clap test in front of the lens while viewing the talent monitor to confirm synchronization within 1/2 frame of motion.
Pro Tip:
Reserve wireless video systems for roaming director monitors and client iPads; always maintain hardwired copper/SDI lines for teleprompters, confidence monitors, and live switching feeds.