There is a particular silence when a founder watches their own documentary for the first time.

It tends to arrive about two thirds of the way through, at the point where somebody they have worked alongside for fifteen years says something about them on camera that they have never heard said out loud. They do not comment on the edit or the music. They go quiet, and afterwards they say some version of the same sentence: I did not know that was how it looked from outside.

Nobody has ever gone quiet like that watching a corporate video, and nobody is meant to. The two formats are built to do different jobs, and most of the confusion we run into comes from a company commissioning one while quietly expecting the other.

Here are the four differences that matter.

Subject

The star of a corporate video is the company that commissioned it, while the subject of a branded documentary is the people behind it.

Documentary therefore suits organisations where how something gets made matters nearly as much as the thing itself, because it gives founders and executives room to explain what they value and why they value it, at a length viewers find human rather than promotional.

Corporate video does the opposite deliberately, putting the institution front and centre and borrowing the collective authority of the organisation rather than the credibility of any individual in it. That same focus makes it far easier to aim, since a corporate video knows precisely who it is addressing and what it would like them to do next.

The star of a corporate video is the company. The subject of a documentary is the people behind it.

Style

Documentary is built on the interview, where questions invite people to speak conversationally about their own experience and the unscripted answer is the entire point of the exercise. The hesitations, and the reactions nobody planned for, are what make the thing feel true.

Corporate video works the other way, relying on a script, on staging and on the viewer’s willingness to accept a polished version of reality for ninety seconds. Where documentary aims at the recognisable, corporate video aims at the aspirational, presenting an idealised picture designed to move somebody toward a decision.

Neither is more honest than the other. They are asking the audience for different things.

Process

A documentary shoot is structured but deliberately not rigid, and it reliably produces more than it set out to find. The interviews surface things nobody in the company had quite articulated before, which is why the process itself often does something useful internally: people hear colleagues describe the shared work in their own words, and something settles that had been unsettled for a while.

A corporate video works from a plotted script, and its value arrives earlier in the process. Writing it forces a company to define itself precisely, in terms of what it does, for whom, and why that is better than the alternative, and that clarity is as much the deliverable as the finished film.

Audience

Corporate video is usually aimed at customers, often at one particular segment of them, with conversion somewhere in mind.

Documentary reaches considerably wider, and this is the difference most often underestimated when the budget is being set. A branded documentary gets watched by prospective clients, by partners weighing up a relationship, by people deciding whether they would like to come and work for you, and by the people who already do. It is not primarily a sales asset. It is an account of the organisation that several different audiences can each recognise as accurate.

Which one do you need?

Ask what you want to happen in the minute after somebody finishes watching.

If the answer involves a decision, an enquiry, a purchase or any other specific next step, commission the corporate video and make it excellent.

If the answer is that you want to be understood, and understood by more than one kind of person, then you are describing a documentary. The silence two thirds of the way through is not an incidental side effect. It is the thing you are paying for. If what you are weighing up is whether the story is worth recording at all, that is a different question, and we have written about it here.