Recently we got a question. "On the quizzes, can it be set so that if the learner fails a quiz they cannot move forward in a video?"
Yes - that is supported out of the box.
When you are configuring a Quiz,
Click "Edit" on the annotation
Under Options / Review Screen, uncheck "Allow viewer to see correct answer(s)"
Under Options / Pass/Fail Actions, click "On Fail" and then set "Jump to Video Time" to 0 seconds, and finally, check "Reset questions"
A viewer will not be able to proceed in the video until they have correctly answered the question.
View an example Here.