The general interview advice from my previous post still applies. This is additional info specific to video interviews.
Ensure you are familiar with the technology platform being used and that any necessary software has been downloaded (or updated) prior to the scheduled interview time.
Make sure you have a strong internet connection.
Check the video produced by your camera to confirm you are clearly visible and easily understood. Adjust light and audio settings as necessary. The location should be private, quiet, and well-lit. Double check your personal image (clothing, hair, etc.) to make sure you appear appropriate professionally. Make sure there isn't anything confidential or too personal visible in the background.
If you are using a laptop or cellphone (rather than a desktop), make sure your battery is fully charged and/or that the charger is available nearby.
Reduce background distractions. This includes pets, children, roommates, televisions, and anything else that can move or make sound. Set your cell phone and any other technology not being used to silent.
Close other applications and web browser tabs to reduce distractions and battery usage.
Have your research on the company and position nearby, plus something to write down additional notes or questions you might have.
Have a glass of water (or other beverage) within reach, along with tissues.
Take a second to pause before responding to avoid interrupting the interviewer.
Get there first - tune in before your scheduled time to ensure you aren't late.
Again, the interview advice from my other post still applies... Sell yourself, be professional, and follow up afterwards.