Video format not supported...on videos that have been running H5P interactivity for two years
I've had the wonderful task of trying to figure out why some interactive videos that some students made for my community organisation no longer work. The interactive videos have been working for the last two years, I don't think anything has changed, and now the error message appearing says "video format not supported". It's still an mp4, the same files, why would it be saying that?
Running on WordPress 4.9.1
Videos are in mp4 format (and have been working previously)
H5P 1.10.0 (I updated this recently after I found that the videos weren't working...updating didn't help)
Doesn't seem to matter what browser, mobile or desktop...
Is there anyway to fix this, or do I need to create the videos again?
Thanks for your help!