Are podcasts audio only?

Related questions

1. Why is it called podcast?
2. What is the purpose of a podcast?
3. Why is it called a podcast?
4. How long should podcasts be?
5. Why would you listen to a podcast?
6. Who has the first podcast?
7. Does listening to podcasts use much data?
8. Are all podcasts free?
9. What podcast used for?
10. Can you watch a podcast or just listen?

Tags

1. #computer
2. #usually
3. #publishing
4. #common
5. #format
6. #additionally
7. #happens
8. #audio
9. #distributed
10. #podcaster
11. #podcasts
12. #video
13. #decision
14. #podcast
15. #consumption
16. #primarily