More and more companies, not just those hiring ESL teachers, ask applicants to log in to a website for an automated video interview. A video "person" asks a question which the applicant then "answers" by making a video. Depending on the software the hiring company uses, the applicant may or may not have the opportunity to create practice answers before sending the final product.
A new website, Voomer (tryvoomer.com) gives you the opportunity to practice your interview beforehand for many, leading employers. You can also record a "typical" video of yourself and get feedback from the site. An article at poetsandquants says, "Voomer recognizes the best number of pauses between sentences, the recommended time to deliver a message, and even body language that can help better communication."
They are supposed to have a free trial though I have not yet been able to access it. More to come on this subject.