Learning happens on site, next to the person who knows. Except that person is on another site, two hours away.

A site learns on the job, and what is learned there never makes it back to head office. The tradesman who knows how to lay it properly shows it once, on site, to whoever has just arrived. Six months later, on another site, nobody knows who knew.
A path per standard job, followed on the tradesperson's phone, with no training room and no travel.
The site method statement, with the safety instructions specific to that site, available where the work happens.
Rework that costs more than the original job, on details known to two people
Safety induction delivered unevenly, depending on the site and the site manager
Know-how that stays local, while the crews move from one site to the next
A rule that changes has to reach everyone at once, with a record of who saw it and when.
The new starter watches the task before doing it, as many times as they need, without tying up an expert for three weeks.
The same task, done three different ways across three sites. One reference recording becomes the version everybody follows.
Yes, from any device: smartphone, tablet, action camera. What matters is that the action is visible and the audio usable; the rest is handled in processing.
It is read step by step, out of order, straight to the one giving trouble, and each step links to the second of video that shows it. It is made to be opened standing up, not read at a desk.
No. The module is produced from the recording, with no instructional design on your side. What is left to you is choosing what to record and approving it before publication.