The maximum length for an intro video is 2 mins 30 seconds (like a movie trailer...), but we recommend somewhere between 30 and 90 seconds.
A minute is usually long enough to introduce yourself, briefly explain what you do, and what you would bring to an employer. You don't need to say too much. The goal is to engage your viewer to find out more about you.
To help with content, we provide ideas on what to say along with an example video in C-Me.