Disabling Video Recording
If you want to disable the video recording part of eSpark for your students, you can do so by clicking on your name in the upper right of your dashboard, then click "Customize eSpark." You can then turn student video recording on or off for your entire class.
Making sure permissions are on
Permissions need to be on in order for videos to work. For more details see Allowing the Camera & Microphone for Student Video Recording.