How Effective Are Custom Explainer Videos for Increasing User Engagement?

I’ve been exploring different ways to make my website content more engaging, and I keep coming across the idea of using  custom explainer videos. I understand they can be tailored to match a brand’s voice and messaging, but I’m wondering just how effective they really are. Has anyone here used custom explainer videos for their business or website? Did you notice an improvement in user engagement, conversions, or SEO performance? Also, what platform or service did you use to create your video?