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What Is a Promotional Video: What It's For, How Long It Should Be, and What It Needs to Have

A promotional video is the short video that sells a specific offer and asks for an action. See how it differs from a brand video, how long it should run on each channel, the five elements it can't do without, and when it isn't the right piece.

August 18, 2026 · agenciaprimeirapagina

What Is a Promotional Video: What It's For, How Long It Should Be, and What It Needs to Have

A promotional video is a short video made to sell one specific thing — a product, a service, an offer, or an event — with a stated goal and a call to action at the end.

That's the definition. What almost no one explains is the rest: how it differs from the other videos your company might make, how long it should run, what it needs to contain, and when it simply isn't the right piece.

What sets promotional apart from other videos

Three formats tend to get confused, and using one in place of another is the most common mistake:

  • Promotional: speaks to a concrete offer and asks for an action now. It's short, has an expiration date, and exists to convert.
  • Brand video: speaks to who the company is, its values, and its history. It stays up for years and serves to build trust, not to sell today.
  • Social content: exists to capture attention and be shared, without asking for anything in return. It feeds the top of the funnel.

A brand video running as a campaign ad doesn't convert — it tells a story when the viewer wanted a reason to click. And a promotional video sitting on the homepage ages fast, because it's announcing an offer that has already ended.

How long it should run

It depends on where it will be shown, and the rule is stricter than most people imagine:

  • Social media ad: 15 to 30 seconds. The first 3 seconds decide whether the rest gets watched.
  • Product page or website: 30 to 90 seconds, because there the person has already shown interest.
  • Sales presentation or trade show: can run up to 2 minutes, since there's someone alongside it explaining.

If the script doesn't fit the time, the problem is almost never the time — it's that it's trying to say three things at once. A promotional video that talks about everything sells nothing.

What every promotional video needs to have

  1. A recognizable problem in the first few seconds. The person needs to see themselves in the situation before hearing the solution.
  2. A clear offer. What it is, who it's for, and what changes in the life of whoever buys it.
  3. Proof. The product working, a number, a testimonial — something that backs up the promise.
  4. A single call to action. Two calls compete with each other and undercut both.
  5. Captions. A good share of the audience watches with the sound off, and a video without captions loses that entire group.

When a promotional video isn't the right piece

It's worth saying what those who sell video tend to leave out. It doesn't solve everything:

  • If the offer isn't clear to you, the video won't make it clear to the customer either. It amplifies the message that exists — it doesn't invent one.
  • If nobody knows your brand yet, a standalone promotional video tends to burn budget. What comes before it is content that introduces the problem.
  • If the product changes every week, an expensive video becomes obsolete before it pays back the investment — a simple, replaceable piece is better.

How much it costs and what makes the price vary

What moves the budget isn't the length, it's where the footage comes from. A video assembled from material the company already has — product photos, previously recorded footage, text animation, and graphic elements — costs a fraction of one with new filming, a crew on location, cast, and a venue. Between the two extremes there's a wide range, and most projects live within it.

The factors that weigh most: whether there's new filming or not, whether people appear on screen, whether professional voiceover is needed, whether there's animation and effects, and how many versions will be delivered — because the same video cut into vertical, square, and horizontal formats yields three pieces from a single production.

That's why the conversation about promotional video production starts with where the piece will run, not with the idea: where it will play determines length, format, and, in the end, cost.

The summary

A promotional video is the piece that asks for an action on a specific offer. Short, with a recognizable problem at the start, proof in the middle, and a single call to action at the end — captioned, because a lot of people watch without sound. If your offer still isn't clear, fix that first: the video multiplies the message that already exists, good or bad.

Perguntas frequentes

What is a promotional video?

It is a short video made to sell something specific — a product, a service, an offer or an event — with a stated goal and a call to action at the end. It differs from the corporate video, which introduces the company and stays up for years, and from social content, which seeks attention without asking for anything.

What is the difference between a promotional and a corporate video?

The promotional one talks about a concrete offer and asks for action now; it is short and has an expiry date. The corporate one says who the company is, stays online longer and builds trust. Swapping them is the most common mistake: a corporate video does not convert in a sales campaign, and a promotional one ages fast on a homepage.

How long should a promotional video be?

It depends on where it will run. In a social media ad, 15 to 30 seconds, with the first 3 seconds deciding whether the rest gets watched. On a product page, 30 to 90 seconds, because the person has already shown interest. In a sales presentation or trade show, it can reach 2 minutes. If the script does not fit the time, it is usually trying to say three things at once.

What does a promotional video need to have?

A recognisable problem in the first seconds, a clear offer, some proof that backs the promise, a single call to action and captions. Two calls to action compete with each other and cancel both out; and without captions you lose everyone who watches with the sound off.

How much does a promotional video cost?

What drives the price is not length but where the footage comes from. A video assembled from material the company already has — product photos, older footage, graphic animation — costs a fraction of one with a new shoot, a crew on location, cast and venue. Professional voice-over, effects and how many versions are delivered also weigh in, since the same video in vertical, square and horizontal formats yields three pieces from a single production.

When is a promotional video not worth it?

When the offer is not yet clear to the company itself, because the video amplifies the message that exists rather than inventing one. When nobody knows the brand yet, in which case a standalone promotional video usually burns budget before there is an audience. And when the product changes every week, since an expensive production becomes obsolete before it pays for itself.