Screencast-o-matic supports LTI integration with Moodle:
The tool's URL to enter is:
(after saving it will change to https://screencast-o-matic.com/lti/resource)
For best viewing experience when adding / editing the tool, open the Show More section in the LTI tool's settings and for "Launch container" choose "Existing window" or "New Window", as the full-screen view button unfortunately does not work as expected when embedded or default launch options are selected.
It IS possible to get at the embedded video's target URL - **even** if the video is passsword protected, I'm afraid. Once there, the student will be able to download the video. It takes some "hacking",, but is possible. In this sense Screencastomatic's own platform for storing videos is not secure. I made these tests several months ago, but i don't think anything has changed. I may write to them one day, being a long time subscriber to their service.