Most video marketers focus on the opening. Get the hook right in the first three seconds, the advice goes, or lose the viewer forever. That's not wrong, but it misses something equally powerful: the moments your audience carries with them after the video ends. The peak-end rule, a principle from cognitive psychology first documented by Daniel Kahneman and Barbara Fredrickson, describes how people evaluate experiences not by averaging every moment, but by weighting two specific points: the most emotionally intense moment (the peak) and the final impression (the end). In video marketing, understanding this distinction can completely change how you structure a script.
What the peak-end rule actually says
Kahneman's research, conducted across medical procedures, film clips, and cold-water immersion studies, found that people's remembered experience of an event correlates strongly with how they felt at its peak and at its conclusion. The duration of the experience, and everything in the middle, contributes far less to recall than those two moments.
For video, this has a direct implication. A 90-second ad doesn't leave an audience with a composite impression of every scene. It leaves them with a feeling anchored to one emotionally charged moment and whatever the final frame made them feel. Every other second of footage is support material for those two beats. Get both right, and the video works. Get them wrong, and even technically excellent production can leave viewers with nothing.
Designing the peak moment
A peak doesn't have to be explosive. It needs to be emotionally distinct from everything around it. In a charity campaign, the peak might be a close-up of a child's face at the moment relief registers. In a product launch, it could be the instant a frustrating problem visibly disappears. The peak is the moment where the viewer's emotional engagement spikes above the baseline of the rest of the video.
Three factors shape peak intensity:
- Contrast: A peak lands harder when it follows a period of lower emotional intensity. A quiet, understated build-up makes a moment of joy, surprise, or resolution feel far more striking than if the whole video has been at full volume. West Melbourne Studios applies this thinking when structuring brand films, using contrast in video marketing to give the peak moment room to breathe.
- Specificity: Peaks built on universal abstractions ("inspiring music + slow motion") wear thin fast. Peaks built on specific, concrete details stick. The name of a customer. The exact number saved. A face the audience has come to recognise in the preceding 60 seconds.
- Timing: The peak doesn't belong at the midpoint. Research on narrative tension suggests placing the peak at roughly the 70–80% mark of a video's total duration gives the story enough runway to resolve cleanly before the ending arrives.
Engineering the ending
The end of a video is the last thing a viewer encodes into memory, and it shapes the emotional label they attach to the whole experience. A strong peak followed by a weak ending leaves viewers feeling unresolved. A mediocre peak followed by a genuinely satisfying close can still produce a positive remembered experience.
The ending is not the call to action, though it may contain one. The ending is the emotional note the viewer is still sitting with five seconds after the video stops playing. That note is what they'll carry into their next interaction with the brand.
Common ending mistakes in video marketing include:
- Fading to a logo on a white background with no emotional content.
- Stacking three separate messages into the final five seconds (website, phone number, offer code).
- Ending on a question that creates uncertainty rather than closure.
Effective endings do one of two things: they resolve the emotional tension the peak created (satisfaction, relief, delight), or they amplify it just enough to leave the viewer wanting to act (desire, curiosity, anticipation). Both of these work. A muddled ending that does neither is what kills recall.
How this connects to storytelling structure
The peak-end rule is compatible with most established storytelling frameworks because good narrative structure already tends to place the climax near the end of the second act and resolve it cleanly. The difference is intentionality. When you're writing a 30-second pre-roll ad, you don't have the luxury of three acts. You have two moments: one spike, one landing. Everything else is connective tissue.
West Melbourne Studios uses structured storytelling approaches when building video campaigns, drawing on storytelling frameworks in video marketing that give each video a deliberate emotional architecture rather than a sequence of features and benefits.
The peak-end rule also interacts with emotional resonance in a specific way. Emotional storytelling in advertising works partly because emotion amplifies memory encoding. A peak that triggers a genuine emotional response doesn't just feel more memorable in the moment: it is more memorable, because emotional arousal increases the fidelity of the memory trace laid down. This is why the peak matters more than a list of product features ever will.
Applying this in practice
Before scripting your next video, answer two questions explicitly:
First, what is the single most emotionally intense moment in this video, and is it placed where it can land with maximum contrast? If you can't name a specific scene or line that functions as the peak, the video probably doesn't have one.
Second, what is the viewer feeling in the final three seconds? Not what information they're receiving. What feeling. If the answer is "nothing in particular" or "I'm not sure", the ending needs a rewrite.
These two questions are fast to answer and expose structural problems that no amount of production polish can fix in post.
The peak-end rule won't save a video that has nothing to say. But for teams who already understand their audience and their message, it provides a precise targeting system for the two moments that actually drive recall, sentiment, and conversion. Most viewers won't remember the second scene. They'll remember how the video made them feel at its best moment, and whether it left them somewhere good.