I wish this to be found when you search for "broken video"
I am posting this - because I wish I could have found this info sooner/easier. I don't know if this actually makes this easier to find (to search) or not - but I am doing my part to try. This should be a sticky IMHO
Apparently when you turn on OPT_USE_AUTH when using cambozola it breaks due to the Options ----> System ----> AUTH_RELAY not being set to "none" for whatever reason.
I turned on OPT_USE_AUTH and it broke video. Then I found a post and tried AUTH_RELAY = none with OPT_USE_AUTH and it seems to work.
(( In the end I bailed on the ZM auth and went with https with apache user checking [because I needed it for something else anyway]- YMMV ))