What latency do I need for wireless video?

Under about 60 milliseconds if a focus puller is working from the receiver, because any delay is added directly to their reaction time. Up to 200 milliseconds is fine for a client or director simply watching the frame. Check the quoted latency rather than the range, since the range is what gets advertised and the latency is what decides whether the system is usable for your job.

How do I power a wireless video transmitter?

From a D-Tap on a V-mount plate. A transmitter draws 6 to 10 W continuously rather than only while recording, so a small NP-F cell means a battery change in the middle of the afternoon. A plate with several D-Taps runs the camera, monitor and transmitter from one cell, so the link lasts exactly as long as the camera does.

Why does my wireless video keep dropping out?

Most often because your body has moved between the transmitter and receiver, which has nothing to do with distance. Other common causes are a congested band at a venue, a transmitter mounted low or against carbon fibre, cross-polarised antennas, and thermal throttling from a unit buried under a hood in the sun. Distance is rarely the actual problem.

How much range do wireless video systems really have?

About a third of the quoted figure indoors. Quoted ranges assume clear line of sight in a quiet band, and a single plasterboard wall roughly halves usable range while brick or concrete can end it entirely. A 400 foot system is comfortable across a large room or an open exterior, which honestly covers most small-crew work.

Should I use a cable instead of a wireless link?

Whenever the receiver is a few metres away and nobody is moving. A cable is more reliable, has no latency, costs almost nothing and cannot be interfered with. On an SDI camera the case is stronger still, since coax runs a hundred metres with a locking connector. Even when using a link, carry the cable, because you do not control the spectrum at a venue.

Wireless Video Monitoring Guide: Range, Latency and Setup

Short answer

Wireless video is chosen on latency rather than range: under about 60 milliseconds for pulling focus, and anything up to 200 milliseconds is fine for a client monitor. Mount the transmitter high with antennas vertical and clear of your body, power it from a D-Tap rather than a small cell, and always carry a cable, because you do not control the spectrum at a venue.

A wireless video link exists so that somebody other than the operator can see the frame without being tethered to the camera. The Hollyland Pyro H at around $369 is the system this guide assumes, because its latency is low enough for real work. Everything below is about making a link survive an actual location, which is mostly about mounting, power and having a cable in the bag.

Latency is the specification that matters

Range gets advertised and latency decides whether the system is usable. A link adding 200 milliseconds of delay is fine for somebody watching the shot and useless for a focus puller, who is reacting to the picture and will always be a fifth of a second behind the actor.

Systems intended for focus pulling quote latency under about 60 milliseconds, and lower is better. Systems intended for client monitoring often run considerably higher, and the specification is frequently buried because it is the less flattering number.

Work out which job you have before comparing anything else. A client monitor a few metres away needs almost nothing, and a focus puller moving with the actors needs the low-latency system. Buying the wrong one in either direction wastes money or wastes the shot.

Mounting, which decides your actual range

Mount the transmitter high on the rig, with the antennas vertical, and clear of carbon fibre and of your own body. A human being is largely water, and water absorbs the frequencies these systems use, so a transmitter mounted low behind you is transmitting through the worst possible obstacle.

Antenna orientation matters more than people expect. Transmitter and receiver antennas should be roughly parallel, both vertical being the practical convention, because a cross-polarised pair loses a substantial fraction of the signal for no reason.

A SmallRig 9.8-inch Magic Arm or a NATO clamp puts the transmitter where the signal wants it rather than where there happens to be a spare thread. This is the one accessory position where signal requirements override balance preferences, and the answer is to compensate for the balance elsewhere.

Power, and the mistake that kills links mid-shoot

A transmitter draws 6 to 10 W continuously, whether or not the camera is recording. That is a meaningful load and it is one that runs all day rather than only during takes, which is why small NP-F cells produce a battery change in the middle of the afternoon.

Run it from a D-Tap. A ZGCINE V-Mount Plate with Three D-Taps and USB-C with three D-Taps and USB-C powers the camera, the monitor and the transmitter from one cell, and the transmitter then runs exactly as long as the camera does. On any rig with wireless video this plate is effectively a requirement.

Heat is the other half. These units get hot, and one buried under a monitor hood in the sun will throttle or shut down. Leave airflow around it, and treat an unexplained dropout on a hot day as a thermal problem before assuming interference.

The link and what powers it

$66 to $369. A short-range client link, a low-latency working system, and the plate that keeps either of them running all day.

Starter pick $163.99

Hollyland

Hollyland Vcore Wireless HDMI System

The cheapest way to get a picture off the camera to a director, and low latency matters more than range on a small set.

Signal: HDMI, 4K30

Short range. Fine for one room.

Check price

Best value $369

HollyView

Hollyland Pyro H

Dual-band with a 1300 ft line-of-sight rating, which in practice means it holds up across a real location rather than across a table.

Range: 1300 ft LOS
Signal: HDMI

The value pick for client monitoring.

Check price

EACHSHOT

ZGCINE V-Mount Plate with Three D-Taps and USB-C

Three D-Taps and a USB-C output on an Arca plate, which is enough to power a camera, a monitor and a transmitter from one battery.

Outputs: 3x D-Tap, USB-C

Check price

Reading range figures honestly

Quoted range	Realistic indoors	What it covers
Under 100 ft	Same room, clear sight	A client monitor a few steps away
300 to 400 ft	Roughly 100 to 130 ft, one wall	Focus pulling and small crew work
750 ft	Roughly 250 ft, through structure	A video village on a real set
1,500 ft and up	Several hundred feet indoors	Large sets and exteriors with margin

Every quoted figure is measured with clear line of sight in a quiet band. Assume about a third of it indoors: a single plasterboard wall roughly halves usable range and brick or concrete can end it. That is still ample for most small-crew work, and treating the quoted figure as a best case rather than a specification prevents an expensive disappointment.

What actually goes wrong

The operator turns so their body sits between the transmitter and the receiver. This is the most common cause of a dropout, and it has nothing to do with distance.
Both units are on the same congested band as every phone and access point in a venue.
The transmitter is mounted low, behind a battery, or against a carbon fibre plate.
Antennas are cross-polarised, one horizontal and one vertical, losing signal for no reason.
The transmitter overheated under a hood in direct sun and throttled.
The battery on a small cell ran out, silently, because nothing was monitoring it.

Notice that only one of those is really about distance. Wireless video problems are nearly always mounting, power or spectrum problems, and all three are fixable on location by somebody who knows to look at them.

When a cable is the better answer

If the receiver sits within a few metres and nobody is walking around, a cable is more reliable, has zero latency, costs almost nothing and cannot be interfered with. A locked-off interview with a client sitting beside you is a cable situation, and using a wireless link there is solving a problem you do not have.

On an SDI camera the case for cable is stronger still. SDI runs a hundred metres over coax with a locking connector, which covers a lot of what a mid-range wireless system does, for the price of the cable. This is one of the quiet ways an SDI body saves money that never shows up in a camera comparison.

The rule that survives a real shoot: carry the cable even when you use the link. Spectrum at a venue is not something you control, and a wireless system that fails needs something to fail into.

Next, from here

Best wireless video transmitters
The systems, compared.
Best on-camera monitors
What the receiver usually feeds.
Best follow focus systems
The other half of a two-person camera team.
Camera rig power guide
The D-Tap plan a transmitter forces on you.
Focus pulling guide
What the low latency is actually for.
Narrative working build
The tier where a receiver first appears.

Common questions

What latency do I need for wireless video?: Under about 60 milliseconds if a focus puller is working from the receiver, because any delay is added directly to their reaction time. Up to 200 milliseconds is fine for a client or director simply watching the frame. Check the quoted latency rather than the range, since the range is what gets advertised and the latency is what decides whether the system is usable for your job.
Where should I mount a wireless video transmitter?: High on the rig, with antennas vertical, clear of carbon fibre and clear of your own body. A person is largely water and water absorbs these frequencies, so a transmitter mounted low behind you is transmitting through the worst available obstacle. This is the one accessory where signal requirements override balance, so compensate for the weight elsewhere.
How do I power a wireless video transmitter?: From a D-Tap on a V-mount plate. A transmitter draws 6 to 10 W continuously rather than only while recording, so a small NP-F cell means a battery change in the middle of the afternoon. A plate with several D-Taps runs the camera, monitor and transmitter from one cell, so the link lasts exactly as long as the camera does.
Why does my wireless video keep dropping out?: Most often because your body has moved between the transmitter and receiver, which has nothing to do with distance. Other common causes are a congested band at a venue, a transmitter mounted low or against carbon fibre, cross-polarised antennas, and thermal throttling from a unit buried under a hood in the sun. Distance is rarely the actual problem.
How much range do wireless video systems really have?: About a third of the quoted figure indoors. Quoted ranges assume clear line of sight in a quiet band, and a single plasterboard wall roughly halves usable range while brick or concrete can end it entirely. A 400 foot system is comfortable across a large room or an open exterior, which honestly covers most small-crew work.
Should I use a cable instead of a wireless link?: Whenever the receiver is a few metres away and nobody is moving. A cable is more reliable, has no latency, costs almost nothing and cannot be interfered with. On an SDI camera the case is stronger still, since coax runs a hundred metres with a locking connector. Even when using a link, carry the cable, because you do not control the spectrum at a venue.

Totalling your own rig weight against your gimbal payload? The Camera Rig Build Planner is the paid version of these pages: 8 printable worksheets you fill in with your own numbers, plus the full PDF, $29.