Since I flipped my chemistry class, one of the most important things that has happened is that my students take ownership of their learning to a greater extent than ever before. I clearly state the learning objectives and provide students with a list of activities they can do to master the concepts. They are then free to choose what to do and use formative feedback about their progress to guide decisions about what to do next.
Convince yourself to let go of some of the control in your classroom! Didn't watch the podcast? Oh well, how do you, Student, plan to learn the content? Pick something else and do it. I'm not the boss. The quiz shows a deficiency of skills in this area - how will you, Student, handle that and what can I do to support you? Get used to saying "how can I help you move forward?" These types of conversations would not be possible if I was still teaching a traditional class.
Here are some options for students that go beyond videos and worksheets: