Video

We recently moved to moodle 4.5.4
using H5P editor we created content uploaded via activity for a course it moodle/.

It works on the laptop (both windows and  mac)
it works on android

However opening the page in an iPhone resulted video not supported. error. We have checked that the source video can be played in an iphome. Is there any solution to this error?

Newbie... wondering if what I need to do is possible, haven't been able to find a definitive answer here or in documentation.

Here's what I need to be able to do:

1) Show a short intro video, which ends by showing two (or more) buttons.

2) Clicking one of the two buttons starts another video playing, a different one depending on which button is clicked.

3) In that first intro video's end screen, no videos will play automatically, one of the buttons must be clicked first.

S.O.S.! I'm trying to upload published interactive videos to Moodle or for other authors to proof...everything was been going great with uploads until yesterday...suddenly, it says video is not supported when others try to open the link in h5p OR via Google chat OR in our LMS. I tried embedding the content as well and no dice. Everything is up-to-date, and I need this to be working asap...thanks!!