I honestly find all of this unnecessary.
Probably the best solution is an App, but that requires 1) coding knowledge (depending on whether it's for Android or iOS), 2) limiting yourself to a specific marketplace, and 3) is a slightly different demographic for eBook (ePub, Mobi) readers.
I still think MP4 is the most-supported format among popular devices (but yes, not all devices), but dwig is right about the codecs.
And again, the problem of how to distribute it (if it's not an App) and be aware that the file size and format might be a hindrance to users.
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