1. I 4kChat because colour and focus have to be judged
A remote review exists for one reason: somebody who is not standing next to the camera has to decide whether the shot is right. Is the focus on the eyes or the ear? Is that white actually white, or has the grade drifted warm? Is the product label readable at the size the ad will run? Those are judgments about the picture itself. If the picture the client sees has been shrunk, re-encoded and smeared on its way to them, they are not judging your shot — they are judging a proxy of it, and they will sign off on things they would have caught in the room.
That is the gap this guide is about. You're in the room when the client sees the feed the camera actually made, at the detail your camera and uplink can carry, with nothing in the middle deciding to throw pixels away. It is not magic and it is not guaranteed 4K on every call — resolution follows the hardware and network at both ends. But it removes the one layer that reliably destroys the detail a review depends on.
2. Small-shop remote production vs share-into-Zoom
The common small-shop pattern is familiar: a camera feeds a monitor or a capture app, and someone screen-shares that window into a meeting tool. It works well enough to talk about a shot. It works badly for judging one. The picture is captured from a screen (often scaled), encoded as screen content, sent to a media server, often re-encoded again to fit every participant's tile, and finally displayed in a window a fraction of the viewer's display. Each step is reasonable on its own. Together they turn fine focus into mush and push colour around.
In 4K Chat the camera itself is a participant in the call. Its frames are encoded once in the sender's browser and travel peer-to-peer to each viewer. There is no media server in the path decoding and re-encoding the video. The client can pin that camera and put it full-screen, or cast it to a bigger display. This is not a broadcast pipeline and we do not pretend it is — it is a much better review window than a screen share.
3. Extra cameras as participants
Every extra angle joins as its own participant. A USB camera, a capture card fed from a cinema camera's clean HDMI or SDI-to-USB converter, or a phone opened on the same room link all appear as separate tiles the host approves. Camera participants are marked low priority, so they take leftover uplink and the humans in the call are served first.
Because cameras are participants, they count toward seats. On Free that is 4 total, on Pro 12, on Cinema 32. A director, a client and two angles fills Free. A small team plus three or four angles is a Pro call. Cinema is the plan with headroom for real multi-cam review. See Pricing and pinning supporting angles.
4. P2P latency and re-encode
Two things matter for a live review: how fresh the picture is and how faithful it is. Peer-to-peer helps both. There is no hop to a regional media server and back, so latency is usually just the network distance between you and the client plus encode and decode time. And there is no server-side re-encode, so the frame the client decodes is the one your browser encoded — one generation of compression, not two or three.
The honest cost: every viewer receives their own copy from the sender. That is why uplink matters so much and why the seat caps exist. We do not claim relay trees or unlimited audiences. For a review with a handful of decision-makers, direct is exactly the right shape. More on the model in How it works.
5. Room setup roles for 4–12 seats
Most small-shop reviews settle into the same four roles. Name them before the call.
- Host / director — starts the call, runs the waiting room, admits cameras and the client.
- Hero camera — the angle that is being judged. One camera, the best uplink, never starved.
- Supporting angles — wide, reverse, product close-up. Nice to have, low priority by design.
- Client / reviewer — pins the hero camera full-screen and gives the calls.
Four seats covers director + client + two cameras on Free. Twelve on Pro covers a producer, DP, an agency contact or two, and a handful of angles. Write it down with the small-shop call sheet.
6. Network honesty: uplink, and Free has no TURN
The sender's uplink is the ceiling. A camera sending to three viewers sends three streams. Wired Ethernet on the machine carrying the hero camera is the single best upgrade you can make; a crowded hotel or venue Wi‑Fi is the worst. Test from the actual location before the shoot day, not from the office.
Calls connect directly between devices using free STUN. Free has no TURN relay, so some strict networks — corporate firewalls, certain carrier-grade NAT — may not connect at all. If a client's network blocks direct connections, try them from a phone hotspot or home connection. Teams that control their own network can operate their own relay; that is customer-run, not a 4K Chat service. See Support.
7. Gear: capture cards and device cams — not a VMS; WHEP coming
What joins today: USB webcams, phone cameras through the browser, and capture cards that present as a camera to the operating system (a clean HDMI out into a USB capture dongle is the classic small-shop path). Each is a host-approved participant.
What is not here yet: bridging IP cameras over WHEP, HLS, MJPEG or RTSP is coming, not shipped. And 4K Chat is not a video management system — it does not record fleets of cameras, keep archives or run analytics. Check the setup checklist before you buy anything.
8. Session runbook: Start → admit → pin
- Host opens Start a Call on the director machine. The waiting room is on by default.
- Each camera machine opens the room link and picks its capture device. Host admits them one by one and checks each tile.
- Share the link with the client; they use Join a Call. No account needed. Host admits them.
- Client pins the hero camera and goes full-screen, or casts it to a TV from their browser.
- Run the colour / focus check before the first take.
9. Limits: this is not a switcher
There is no program output, no transitions, no multiview you can route to a stream, no tally. 4K Chat is a review room — everyone sees the angles they choose. If you need a switched show, use a switcher and send its output in as one camera. Big screens are cast or mirror from a browser; there is no Smart TV store app. Native apps are in development; the browser is the path today. Resolution follows both ends — Cinema gives the most seat headroom for multi-cam review, not a guarantee of 8K.
10. Try it: a two-person review
The fastest proof is two people and one camera. Start a call, have a colleague join from another network, pin the camera full-screen and look at a focus chart and a white card. Compare that to your current screen-share. Judge the received detail, not our claims. Then read the Zoom comparison or go back to the Remote production overview.