~ 5/6 seconds Long

https://www.youtube.com/watch?v=du0-FdQZ57w

~ 2 seconds long

https://www.youtube.com/watch?v=ybGOT4d2Hs8

Vary from 30 Seconds to 10 Seconds

https://www.youtube.com/watch?v=ezisEq5pfYw

Less than 30 seconds

https://www.youtube.com/watch?v=qI_ofzEBh2A&t

20 seconds

https://www.youtube.com/watch?v=9lKWZZ5sKIU

~ 10 Seconds Long

https://www.youtube.com/watch?v=4VSzhkRLRjg&t

~ 13 seconds.