The most common testimonial mistake is length. A ten-minute customer interview feels precious to you and endless to a prospect. The right length depends entirely on where the film will live — so plan the cuts before you shoot.
Homepage & landing pages: 60–90 seconds
On your site, a prospect gives you seconds, not minutes. A tight 60–90 second hero cut — problem, turn, result, recommendation — earns trust without losing them. Keep a longer version available for those who want to go deeper.
Social (Reels, Shorts, LinkedIn): 15–45 seconds
On social, you're competing with a thumb. Pull the single strongest moment — the money line — into a vertical, captioned 15–45 second clip. One interview yields many of these, which is where the ROI of a shoot really compounds.
Sales decks & follow-ups: 60–120 seconds
In a deck or a follow-up email, a prospect is already interested, so you have a little more room — but one to two minutes still beats a five-minute epic. Match the clip to the objection the deal is stuck on.
Paid ads: 6–30 seconds
Ads are the most ruthless. A 6–15 second cut with the clearest, most relatable line and captions on will outperform a longer one nearly every time. Test a few openings from the same interview.
The rule: shoot once, cut for everything
A good producer captures a rich interview and then cuts it into a hero film plus a set of platform-specific clips — captions and aspect ratios built in. That's how one shoot feeds every channel; see where to use a testimonial video.
Frequently asked questions
Can a testimonial be too short? Yes — under about 6 seconds there isn't room to establish who is speaking and why they're credible. Match length to the platform.
Should we publish the full interview? Rarely. Keep the raw interview for internal use and publish tight cuts; a long unedited testimonial almost always underperforms.
- Homepage: 60–90s. Social: 15–45s. Decks: 60–120s. Ads: 6–30s.
- Shorter almost always outperforms longer.
- Pull the money line for social and ad cuts.
- Plan the cuts before the shoot so one interview feeds every channel.
