I’m working on a SaaS landing page and want to test short product demo videos above the fold.
For those who have done this before:
- Do you use MP4, WebM, or both?
- Do you lazy-load the video or use a static poster first?
- What file size do you aim for on mobile?
- Have you seen video hurt Core Web Vitals or SEO?
- Is autoplay worth it, or is a click-to-play preview better?
I’m looking for practical implementation advice rather than promotion.