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Home › Case studies › Zero Decybeli
Kanał Zero · 5 episodes · 2026
Two-location live show production — an OB van wired into Kanał Zero’s studio
„Zero Decybeli” was made in a music recording studio, but it went out as part of a broadcast run from Kanał Zero’s main studio. Two places, one transmission — joined by a return feed, an intercom link and LiveU uplinks.
The challenge
The show in a recording studio, the presentation in another building
„Zero Decybeli” is a conversation with live music in it — guitar, piano, drums, all played in shot. You cannot make that in a standard television studio: you need a room that sounds good. Hence a recording studio, with proper acoustics, rugs and the instruments already in place.
The catch is that an episode was not a stand-alone piece. It was part of a broadcast run from Kanał Zero’s main studio. So our crew had to produce picture and sound on the floor and, at the same time, plug into somebody else’s transmission — while seeing and hearing what was happening at the other end.
The floor in the recording studio — cameras, lighting and instruments in one frame.
How we did it
Two locations tied into one transmission
When a show is part of someone else’s broadcast, sending a picture is not enough. You have to build a path in both directions: our signal out to them, their signal and their voices back to us.
An OB van parked at the studio
Full camera production, lighting and a gallery in an OB van parked outside. Cuts, graphics and the mix all done live on site, not in post.
LiveU to the channel’s server
The finished programme went out over LiveU uplinks straight to Kanał Zero’s receiving server, where the transmission gallery was waiting for it.
An SRT server for the return feed
A separate SRT server took the signal from the main studio and fed it to the floor, so the crew and the guests could see what was on air and knew exactly when they were coming in.
Intercom between the two galleries
A permanent intercom link between Kanał Zero’s gallery and our van. Two crews in two places worked as one.
Equipment
What we brought to the series
OB van
Gallery, vision mixer, multiviewer and full audio production on site. The same kit is available through our equipment rental.
LiveU + SRT server
Programme uplink to the broadcaster’s receiving server and a separate SRT path carrying the return feed to the floor — two independent directions, each with its own backup.
Lighting and intercom
Lighting for the whole floor of the recording studio, plus the intercom link to Kanał Zero’s gallery.
The multiviewer in the van: cameras from the floor on the left, PGM and PRV on the right, the return feed from the main broadcast at the top.
Full episode
Episode one — Krzysztof Stanowski and Paweł Domagała
Almost two hours of conversation woven through live music (in Polish). It shows exactly why this show went into a recording studio: the instruments are in shot and they sound like a record, not like a television set.
All episodes
The result
Five episodes, two locations on every one of them, and not a single insert that had to be done again.
Between them the episodes have been watched more than 480,000 times. For a format that runs an hour and a half and rests on conversation, that number speaks for itself.
From our side, though, the important part is repeatability. A series means every following episode started from a finished technical script: the same rig, the same signal paths, the same way of tying into the broadcaster’s gallery.
That pattern moves anywhere a show is made away from the main studio — on location, at a partner’s premises or in an arena — and still has to appear in the transmission like any other source.
Guests
Five guests, five different musical setups
Across the series the studio hosted Paweł Domagała, Natasza Urbańska, Piotr Cugowski, VIX.N and Czadoman. Each arrived with different music, which each time meant a different microphone plot, different sound sources in shot and different camera positions.
The show was presented by Krzysztof Stanowski, with Tomasz Kammel taking one of the episodes. The only constant was the technical setup — and in a series that is where the value is.
FAQ
Two-location live show production — common questions
What does producing a show from two locations actually mean?
The show is made in one place while the transmission is run from another. Our gallery cuts the finished picture on the floor and sends it to the broadcaster’s transmission gallery, which drops it into their programme like any other source. That also needs a path the other way: a return feed and voice comms.
Why does the floor need a return feed?
So the people on the floor can see what the audience sees. Without a preview of the transmission, the presenter and the guests do not know when they are on air or what has just gone out. On a live show that is the difference between a clean hand-over and an awkward silence.
What is SRT and why use it for the return feed?
SRT is a protocol for sending video over ordinary internet that recovers lost packets by itself. It gets the preview from a distant gallery to the floor reliably and with low latency, without a leased line between the two locations.
Why record in a music studio rather than a TV studio?
Because the music was played live in shot. A television studio is designed around the picture, a recording studio around the sound — and in a format where a guest sits down with a guitar next to drums and a piano, you hear the room in every second.
Can you plug into our channel’s transmission?
Yes, that is a standard part of this kind of production. We adapt to whatever the broadcaster uses: LiveU, SRT, RTMP or a feed into your own receiving server. We also agree the signal format, the latency and the comms between galleries in advance.
How large is the crew on a show like this?
It depends on the number of cameras and the size of the floor. On a series like this one: a director, camera operators, a sound engineer, a lighting technician and someone responsible for the signal paths. All on our side — the client does not have to assemble a crew.
What does producing a series cost?
It depends on the number of episodes, the number of cameras and whether an OB van is needed or a flypack is enough. A series is priced differently from a one-off — tell us how many episodes you are planning and where the show will be made.
Making a show away from your main studio?
We will bring the OB van, produce picture and sound on site and tie your location into the transmission — with a return feed and intercom in both directions.