If you haven't experienced a one-way interview before you may be a little confused by what a one-way interview is. Think of it like a questionnaire but in video format. You receive an invitation by email with questions to respond to. You will be given a certain amount of time to respond and usually you will have more than one chance to record. You will also be given a deadline to respond by. This is delivered with video interviewing software that activates your camera in your device or computer so when you respond to each question it submits it directly back to the employer through his software.
One way interviews are also referred to as pre-recorded interviews and on-demand interviews. What makes them different is that you are essentially recording your answers alone, talking to your camera, instead of an interviewer. However, the interviewer is reviewing them, just not live at the time you are recording them. So, you need to ensure that you present your responses professionally.