You'd need a robust ERP to make this viable, so that the right video is uploaded in the right place and made available to the right client. It would be nice, but feels unnecessary. Also, it would slow things down, because you'd have customers having to effectively sign off on the frame, that can easily add 1 week on average, because now between paint and shipping, you have an extra stage, extra storage, and so on.
Alternatively, and more simply, it's called basic QC, where the factory isnt supposed to ship unrideable garbage. Where i come from, people take pride in the stuff they make. Right or wrong, If i receive shit in a box, i feel personally insulted.
The challenge is you are setting the quality bar really high, even high end Swiss watch makers have non zero quality issues (I know as my mother was working for a luxury brand).
As for video sharing, we can just have email exchange via mails, Youtube can also host private videos, so I think this would be an acceptable technological solution.
As for the delay, if consumers are paying, why not? As for an additional week of delay/shipping, I think most would be happy if this ensures there is less risk on quality and provides an additional quality review. I waited 4 months for one order, one week would not have made any difference.
Finally, I think the argument of quality should be refined: I think the workers also want to make products of high quality, but we don't know the environment/conditions in which they work or of they have the allotted time to make good product. [See what happens in fast fashion for example].
