It is the first question on almost every video brief, and it is nearly always asked the wrong way round. Teams pick a duration, then try to fill it. Ninety seconds because that is what the last one was. Two minutes because there is a lot to cover. Thirty seconds because someone read that attention spans are dead.
Here is the short answer. For most B2B explainer videos in 2026, aim for 60 to 90 seconds. That is long enough to set up a problem, show your solution and land a call to action, and short enough to hold a busy decision-maker who did not wake up wanting to watch your video. The honest answer underneath it is that duration is an output. The right length is however long your message takes, minus every second of filler.
Below is the working: what the data says about shrinking video lengths, how the right duration changes by job and platform, and why the question you should actually be asking is not “how long” but “how soon”.
Videos are getting shorter, fast
The long-term trend is unambiguous. Research from Siege Media tracking average video lengths found they have fallen from 168 seconds in 2016 to 76 seconds today, with projections pointing to around 39 seconds by the end of 2026. In a decade, the average video has shrunk to a quarter of its former length.
Viewer preference data points the same way. Animoto’s 2026 State of Video Report found 61% of people prefer videos under one minute, and only 5% actively want videos of two minutes or more. HubSpot’s research has repeatedly found short-form video delivering the highest return on investment of any content format.
Does that mean every explainer should be 39 seconds? No. Treating averages as targets is how you end up with a video that is the right length and the wrong everything else. The averages include social clips, ads and entertainment. Your explainer has a specific job, and the job sets the length.
Length follows the job, not the fashion
Different videos in a B2B pipeline are doing different work. Match the duration to the work.
Homepage explainer: 60 to 90 seconds
This is the classic. A visitor has landed on your site, half-understands what you do and is deciding whether to keep reading. The homepage explainer exists to make your value proposition land quickly and make the visitor feel clever for getting it. Sixty to ninety seconds is the sweet spot. Under sixty and complex propositions feel rushed. Over ninety and you are asking for commitment the visitor has not agreed to yet.
Product or feature deep dive: 90 seconds to 3 minutes
Once a prospect is genuinely evaluating, the rules change. Someone comparing your platform against two rivals will happily watch three minutes if every second earns its place. These videos sit on product pages, in follow-up emails and in the hands of your sales team. They can afford detail. They cannot afford padding.
Social cutdowns: 15 to 30 seconds
Nobody watches a ninety-second explainer cold in a LinkedIn feed. Social clips have one job: earn a click or plant a single idea. Take the strongest moment from your main video, front-load it and get out. If your explainer was structured properly, it should yield three or four of these without new production work.
Sales enablement and technical walkthroughs: as long as they need to be
Videos sent directly to a warm prospect after a call operate under different physics, because the viewer has asked for the information. A five-minute technical walkthrough that answers a buying committee’s objections is not too long. A two-minute one that leaves their questions hanging is.
Length by platform
The same video behaves differently depending on where it plays, so it is worth knowing the house rules of each platform before you settle on durations.
LinkedIn rewards native video that gets to the point immediately, and video watch time on the platform grew 36% year on year according to LinkedIn’s own figures, so the audience is there. Keep feed content under 90 seconds, assume the sound is off, and caption everything. A silent, captioned 30-second cutdown will outperform a full explainer posted cold almost every time.
YouTube is the opposite case. It is a search engine as much as a social platform, and viewers arrive with intent. Longer content is rewarded, provided it delivers. This is the natural home for your two and three minute product deep dives, with chapter markers so evaluators can jump to the section they care about.
Your own website sits in between. A homepage explainer should respect the 60 to 90 second rule because visitors are still deciding whether to care. Deeper pages can host longer pieces, because anyone who has clicked three levels into your product documentation has already told you they are interested.
Email is the odd one out. Do not embed, link. A thumbnail with a play button driving to a landing page will tell you exactly who engaged, and the video on the other end should be short enough to honour the promise the thumbnail made.
Drop-off is not always failure
One more piece of nuance the averages hide. A video that loses 40% of viewers in the first twenty seconds sounds like a disaster, but look at who left. If your explainer opens by stating exactly what you do and who it is for, the people who leave early are largely the people you were never going to sell to. That is not drop-off, that is qualification.
What matters is the retention curve among the audience you actually want. A three-minute technical walkthrough with 70% completion among evaluating buyers is doing vastly more commercial work than a fifteen-second clip with a million passive views. Measure the watch time of the people who could sign a purchase order, and let everyone else scroll on with your blessing.
The first ten seconds matter more than the last sixty
Here is the reframe worth taking away. Total duration matters far less than how quickly the video gets to the point.
Viewers do not abandon videos because of the number in the corner of the player. They abandon them the moment they stop believing the next ten seconds will be worth their time. A ninety-second video that opens with your logo animation, a drone shot and a throat-clearing line about “today’s business challenges” has lost half its audience before it says anything. A ninety-second video that opens on the viewer’s exact problem keeps them to the end.
So front-load ruthlessly. State the problem in the first line. Show the product early. Save the company story for your About page. The question your script needs to answer is how fast it can reward attention, rather than how long it can hold it.
This is also where cutting filler beats cutting content. Teams asked to shorten a video usually delete substance and keep the fluff, because the fluff feels like polish. Do the opposite. Keep every second that informs, cut every second that decorates, and let the final duration be whatever is left.
Where length meets budget
There is a practical reason this question comes up on every brief: animation is typically priced by the minute across the industry. A tighter script is better viewing and better procurement at the same time.
That creates a useful discipline. When every second costs money, you interrogate every second. Does the viewer need this line? Does this scene move them closer to the call to action? Most first-draft scripts we see could lose 20% of their length and lose nothing else. The result is a video that costs less and performs better, which is not a trade-off you get offered often.
If you are budgeting a project, our pricing is published openly, including exactly what each package covers. As a rule of thumb, a strong 60 to 90 second explainer covers the vast majority of B2B jobs, and going longer should be a deliberate decision with a reason attached, not a script that got away from everyone.
Common length mistakes, and what they cost
A few patterns come up again and again in videos that underperform.
The kitchen sink video. Every feature, every audience, every use case, crammed into one three-minute piece that serves nobody. If you are selling to two distinct audiences, that is two videos. Each can be half the length and twice as sharp.
The slow open. Ten seconds of logo, music and establishing shots before a single useful word. In 2026 that is a third of some viewers’ total patience spent on decoration.
The missing end. Videos that fade out on a feature list with no call to action, because the script ran long and the CTA got squeezed. Whatever the length, the last ten seconds must tell the viewer what to do next.
The single-length strategy. Producing one duration and forcing it everywhere: the website, the trade show loop, the paid social campaign, the sales deck. Each placement has different viewer intent, so plan the cutdowns at scripting stage rather than as an afterthought in the edit.
Test it before you trust it
Treat all of the above as a starting position rather than gospel, because your audience will tell you the real answer if you let them.
Most video hosting platforms give you retention graphs for free. Watch where viewers drop, and be honest about why. A cliff at the fifteen-second mark usually means a slow open. A steady slide through the middle means the script is repeating itself. A spike of rewatches on one section means you have found the part buyers actually care about, which is a strong hint about what your next cutdown should lead with.
If you run paid campaigns, test two durations of the same message against each other before committing the full budget to either. The results are frequently humbling. Plenty of teams convinced their story needed two minutes have watched the sixty-second version beat it on every metric that matters, including the ones connected to revenue.
So, how long should yours be?
Start with the job. Write the shortest script that does it completely. Front-load the value, cut the filler, end with a clear next step. If that lands at 45 seconds, you have a 45-second video. If it genuinely needs two minutes, it needs two minutes, and the length will not be the reason people stop watching.
You can see how this plays out across different durations and jobs in our work, from tight homepage explainers to longer technical pieces.
And if you are staring at a brief wondering whether your story fits in ninety seconds, send it over and we will write the script free. Working out what a message actually needs, and what it only thinks it needs, is most of the job. If you do not love the script, you keep it and walk away.
