The shortest answer is: use video when everyone needs the same guided explanation; build interaction when the visitor's choice changes what they learn or can decide. A large screen with a “start” button is still mostly a video. An interactive build earns its complexity when a person can compare, configure, explore a consequence, or practice an action that passive viewing cannot provide as clearly.
Start with the information job
Imagine explaining a new service at a conference. A 45-second video can set the problem, show the service, and give the same clear ending to every passer-by. An interactive station may be useful if buyers need to select their situation and see how the service changes. If there is only one meaningful route through the story, adding menus can create work without adding understanding.
Research on product presentations cautions against ranking formats by novelty. Jiang and Benbasat compared static images, two video formats, and a virtual product experience in a laboratory experiment. For moderately complex tasks, video and virtual interaction produced similar actual product knowledge, both above static images; for highly complex tasks, the four formats did not differ on that knowledge measure. This was online product evaluation, not a live event, but it shows that more interaction did not always mean more understanding. Jiang and Benbasat, MIS Quarterly, 2007.
A second experiment compared noninteractive video with full and deliberately restricted virtual product interaction. Restricted interaction was more enticing than video and full interaction for participants with more product-class knowledge, and generally as engaging as full interaction. It explored product presentation and stated purchase intention online, not actual event sales. Its useful design lesson is to offer enough control for the visitor's question, without assuming every possible control improves the experience. Yi, Jiang and Benbasat, Journal of Management Information Systems, 2015.
Together the studies argue for testing the specific learning task. They do not provide an event-wide conversion forecast or a rule that interactive media beat video.
Choose a format by the visitor's role
| If visitors need to... | A practical first format | What to test |
|---|---|---|
| Hear one concise promise | Short video with captions and a clear ending | Can they repeat the point after one viewing? |
| Compare different situations | Guided interactive comparison | Can they identify the relevant difference? |
| See a physical consequence | Hands-on demo or simulation | Does the action reveal the claimed effect? |
| Watch while others participate | Shared display with a spectator narrative | Can a bystander understand the result? |
This table is a brief-writing aid, not a finding that one format is universally superior. A hybrid can be useful: a short video establishes the story, then a single interactive choice explores a consequence. Keep the transition deliberate. If visitors must watch a long film before they can act, they may leave before the interaction begins; if they must choose before they know the subject, the choice may be meaningless.
Compare prototypes on the same claim
Write the one sentence a visitor should understand. Make a low-cost video storyboard and an interactive prototype that communicate that same sentence. Test both with first-time visitors in a realistic time window. Ask what they learned, what they still need to know, and whether they can explain the next step. Count observation and comprehension separately. The winning format is the one that helps people complete the intended task in that context, within the budget and venue limits.
Archv offers campaigns and interactive experiences. The same team can shape the story and the action so a format decision comes from the visitor's job rather than from the desire to put a touchscreen in the room.