I maintain my company's knowledge systems. Multimedia videos have several problems:
- They are not accessible to the hard of hearing or the vision-impaired.You may be breaking the law unless you invest the effort to caption every single video.
- They are hard to search. Unless you create transcripts/captions or extensively meta-tag the videos it's really hard to find specific content.
- They are not easy to update. Generally you have to reshoot and re-edit the entire video.
- They take a lot of time and effort. Generally you can produce a text-based delivery that covers more knowledge in better detail in the same time it takes you to make a video.
I've seen several efforts to "video all the things". All have failed. Corporate videos are good for one thing - delivering "talking head" messages from management. After six months you can quietly drop them from your intranet and nobody notices.
The one day you'd sell your soul for something, souls are a glut.