You can easily embed videos in problems.
- Click on the problem and select Edit Problem
- Select Add part in the top right, and then select Text/Video/Other
- A text editor will appear. Select the Insert Video button and then paste in the video link from Youtube/Vimeo/etc.
- Click Insert. Your video will appear embedded in the problem.
- Select the Preview tab at the top of the screen to preview the question with the added video.