Due to a default setting in Chromebooks, in order for videos to play properly, you will need to manually disable their Hardware-accelerated video decode setting.
Here are the steps to do so:
1) In a Chromebook browser, type the url "Chrome://flags"
2) Locate the setting Hardware-accelerated video decode
3) Within the Hardware-accelerated video decode click Disable. Once this is complete, the word below the setting will change to Enable and you will know the action has worked.
4) Restart the computer
5) Try watching a video within Medbridge