I see this login screen when I try to a view a lecture video.

For security reasons, users are logged out of the video system after one hour of inactivity.

Close the video window. Log out of Canvas. Clear the cached web content in the “Privacy & Security” preferences. Log back into Canvas. Reload the lecture video page in Canvas.

Do not copy and paste the lecture video link into another browser, as it will not register that you are logged into Canvas.


I see a “3rd party cookie” error in Canvas with the Safari browser.

The easiest fix is to switch to Chrome or Firefox.

Here are the steps to fix it in Safari:

Add the Canvas/Kaltura cookie to Safari. Adding the cookie can be done in the following manner (iOS, OS X, macOS):

In Safari, navigate to the page that is just before the page that contains the Kaltura media.
Temporarily change your “Block Cookies” setting:

  1. Click Safari Preferences and click the “Privacy” tab.
  2. Make a note about what is currently selected.
  3. Under “Cookies and website data”, click “Always Allow”.

Back in Safari, click the link that takes you to the page containing the Kaltura media. The media should load. If the media loads, it means that the cookie has been added to Safari and is now allowed.

Change your “Block Cookies” setting back to its previous setting:

  1. Click Safari Preferences and click the “Privacy” tab.
  2. Select “Allow from websites I visit” or whatever had been previously selected.


The primary lecture video keeps pausing and I’ve tried reloading the browser.

The primary lecture video is created using a Mediasite lecture capture system. The system captures two streams of video, one for the camera and one for the content. Because of this, the video file-size is very large. It is important to view them on a fast, reliable network.

Test your browser and network connection against the Mediasite viewing requirements

If you’re on the campus network, it’s possible there is an outage. Check campus network status.

Play the backup video. The backup video is a smaller file and will auto-detect your network connection to provide a smooth stream.
Sometimes quitting and reopening the browser will fix playback problems.


I’m using Safari on Mac OSX and the video does not play.

The latest versions of Safari include a new feature called Safari Power Saver, which is intended to disable plug-ins in order to conserve battery power. When hovering over the video window of a presentation, an icon should appear. This icon “allows” the plug-in on that webpage when you click on it. If this icon does not appear, disable Power Saver completely. This will “allow” the plug-in.

To disable the Power Saver function: Enter Safari Preferences, go to the Advanced tab, and uncheck the box to “Stop plug-ins to save power.” Reload the webpage containing the Mediasite presentation and it should play properly.


Still experiencing issues? Contact and provide us with the class name and a detailed description or screenshots of the issue here: lecturecapturehelp@ucdavis.edu