2011Video Assist and Video Accessories forum
Using consumer wireless HDMI system on professional film sets with RED camera
15 years old. Gear and prices may have changed since.
DisputedParticipants disagreed and reached no conclusion. Read the findings as positions, not as an answer.
What the thread found
- The Brite-View Air Sync HD wireless HDMI system costs around $200-220 and can be integrated into professional workflows by adding an HD-SDI converter on each end (Decimator2 and AJA HA-5) to convert to BNC connectors suitable for field monitors.
- The device requires 5V at 3 amps of power and can be powered from camera auxiliary power by using a step-down transformer soldered into a modified AUX PWR cable.
- Line-of-sight transmission works well, but the signal degrades significantly when passing through multiple walls, dropping completely after two walls, making it unsuitable for distributed video village setups in multi-room locations.
- The wireless signal remains stable during movement and handheld operation, contrary to concerns that it would only work in stationary rack-mounted setups.
- The transmitter unit contains five antenna connectors on the PCB (one UPLINK and four additional) but the consumer model only includes one antenna; adding antennas to the remaining connectors could improve signal strength through OFDM-MIMO technology.
- The system exhibits less than 1 millisecond of transmission delay.
- HDMI connectors are prone to damage on set and represent a weak point for professional use compared to BNC connectors.
- A hybrid wired solution using HDMI extenders over CAT5 ethernet cables can provide longer cable runs to video village while keeping the receiver closer to the transmitter.
Depends on
- All testing was conducted indoors in residential environments; outdoor performance was not extensively tested.
- The device automatically selects resolution and does not allow manual switching between formats.
- This is a consumer product adapted for professional use through additional components and modifications; it is not designed as a production-grade solution.
- Signal penetration through building materials was tested but optimal antenna configuration and power amplification modifications were not fully implemented during the discussion period.