For some reason, Lazy Load XT isn't removing the class .lazy-hidden on an HTML video that I have. I believe I've got the markup correct according to what you designate in the usage section. Lazy Load XT correctly replaces 'data-src' with 'src', and if I remove the class .lazy-hidden using the inspector, the video appears and works as expected. It just doesn't remove the class. It also throws now errors.
Download a zip here to see the problem in action:
https://gist.github.com/dbhynds/055c83e497d5f2d583bb