Pasted YouTube HTML file not working

[Michael5ED9]

I’ve produced an interactive poster with a bio of a soccer player. It contains various animations and interactive object states as well as an embedded YouTube video. The soccer player is clipped from his background, with a layer mask, saved in PSD format and fills the poster. Part of his arm is meant to cover a corner of the video but when viewed in EPUB Preview, the video won’t play but bring it to the front and, hey presto, it plays. I've also tried putting a rectangular frame over it with a dash-stroke in the team colours, but same again, it won’t play. The video, it seems, has to be the foremost object. Now, from what I gather, the video should work even if it’s behind other objects but, maybe, it has to be an mp4 linked video rather than embedded HTML?

Has anyone in the community ever encountered this before?

[BobLevine · Accepted solution]

Normal and expected behavior. 

[Em5E66]

Cheers Bob. 

Is it that embedded HTML video simply can't be expected to work as well as a linked mp4? ie the behaviour of a YouTube HTML isn't as predictable/reliable.