What is an outside broadcast (OB)? How a 4K OB production works
What outside broadcast means, how an OB van and a flyaway kit differ, who is on the crew, where the feed goes and how to plan a 4K OB.
An outside broadcast (OB) is a live or recorded television production made away from a studio, usually at an event or venue, where several cameras are switched together on site and sent out as one programme feed. A 4K OB delivers that feed in 3840 × 2160 for big screens, broadcasters and online streams.
What does OB mean?
OB stands for outside broadcast, also called outside broadcasting. It describes any production made outside a studio: a conference hall, a stage, a ceremony, a stadium. Television has used OB production since its early days. The idea is to bring the studio to the event, with cameras, a control room and a way to send the picture out.
OB van or flyaway kit
The control room of an OB can be built in two ways.
| Setup | What it is | Best when | Watch for |
|---|---|---|---|
| OB van | A vehicle that works as a studio on wheels, with the vision mixing, audio, replay and recording equipment inside | The venue has road access and parking and the show needs a full control room | Space for the vehicle and the cable runs to the cameras |
| Flyaway kit | Portable equipment carried into the venue and rigged there, with no vehicle | Access is restricted, the venue is small or temporary, or the budget is tight | Rigging time in the venue and a smaller scale than a large van |
Vans range from small units with four cameras to large mobile units with thirty or more. Flyaway kits are built around compact switchers and cameras and can scale from a three-camera show to a large event. Many modern vans are built around IP technology instead of coaxial cable.
What is inside an OB control room
- 01Vision mixing.Switching between cameras, graphics and other sources to build the programme
- 02Audio.Mixing microphones, music and remote audio into the feed
- 03Replay.Recording and replaying moments during the show
- 04Graphics.Names, logos, scores and sponsor slides added live
- 05Recording.A copy of the programme and, where needed, of each camera
- 06Communications.A talkback line between the director and the camera operators
Who is on an OB crew
The size depends on the show, but the roles are consistent: a director, a vision mixer (sometimes the director), camera operators, an audio engineer, a graphics operator, a replay operator where needed, an engineer for the signal path and a producer. On small jobs one person may cover two roles.
Planning a live event in the UAE?
Send us the event, the venue, the date and where the stream should go. We reply within one working day with a scoped quote.
Where the OB feed goes
The feed is traditionally sent back to a broadcast centre, often by satellite or fibre. Today it can also be encoded and sent online over a wired line or bonded cellular, shown on LED screens at the venue, or delivered to a client's own player. The same feed can go to all of these at once.
OB or a simple live stream?
These are typical differences, not fixed rules.
| Simple live stream | OB production | |
|---|---|---|
| Cameras | One or a few, often with a small switcher | Several, switched in a control room |
| Crew | A small team | A full crew with separate roles |
| Output | One stream to a platform | A programme feed that can go to screens, broadcasters and online at once |
| Best for | Talks, webinars and small hybrid events | Large events, ceremonies, performances and shows with many moving parts |
Planning a 4K OB in Dubai
Where to go next
For what we offer, see 4K outside broadcast in Dubai. For a lighter setup, see 4K live streaming and the planning guide. For event coverage without a live feed, see event video and photography.
Streaming or broadcasting an event in the UAE?
Send us the event, the venue, the date and where the stream should go. We reply within one working day with a scoped quote.
Outside broadcast questions: OB vans, crews and 4K.
What does OB stand for in broadcasting?
OB stands for outside broadcast, a live or recorded television production made away from a studio, usually at an event or venue.
What is an OB van used for?
An OB van is a mobile control room. It holds the vision mixing, audio, replay and recording equipment so that a multi-camera production can be made at the venue and sent out as one feed.
Can an outside broadcast be done without a van?
Yes. A flyaway kit is portable equipment that is carried into the venue and rigged there. It suits restricted access, small or temporary venues and tighter budgets.
Can an OB production be broadcast in 4K?
Yes, when the cameras, the vision mixer, the signal path and the encoder all work at 4K. The weakest stage sets the limit, so each one is checked at the planning stage.
