Everything in moderation. Long intro videos are annoying and off-putting but so is a very big chunk of text. Why not a little of both? A short paragraph, or bet

Everything in moderation. Long intro videos are annoying and off-putting but so is a very big chunk of text. Why not a little of both? A short paragraph, or better yet a list of that your services are, and a short <45s about your services. You can provide more information and longer videos afterwards in a specialized section, when the user has been successfully engaged and is willing to invest time in learning about your services.