Collaborative Lecture Annotation System (CLAS)

The Collaborative Lecture Annotation System is a media player used to record, share, and comment on audio or video. Media uploaded to CLAS is stored on a secure server at UBC and you are able to control who has access to which file. CLAS is also mobile compatible, so you can record media and make comments directly from your mobile devices.


Key Features

  • Secure access requiring login using UBC CWL.
  • Mobile compatible enabling users to record audio and videos and upload directly from mobile devices.
  • Students can also upload a file from their desktop PC.
  • Students can specify which users can have access to a file.
  • Annotations can be recorded real-time at any point on the file.
  • Group members or instructors can record annotations to a student’s file.
  • Media and metadata all hosted internally in UBC.
  • Comments and annotations can be threaded like in a forum.
  • Comments and annotations can contain links and self-recorded media sample.
  • Uploading and access control for media can be finely customized, and open or close to students, depending on each course’s need.

Additional Resources


All questions regarding this technology can be directed to or we can be contacted by phone at 604.822.6333, Monday – Friday, 8:30 am – 4:30 pm.