cookies prevent videos from playing, is there a workaround?

cookies prevent videos from playing, is there a workaround?

Hi,

I made an interactive project for safetyvideos. Visitor watches the videos, answers some questions and at the end of the video recieves a PDF to grant permission to the physical location.

Now the client is often hearing the embedded videos do not work. And the cause seems to be the cookie settings.
The videos are not visible because the visitor has denied cookies for 'Statistics'. (they use Cokkiebot)
The client now has a workaround: the cookies of the ivory player have been added to 'Necessary', 
but they shouldn't be there, so client wants an alternative.

In Vimeo and Youtube you can change the code to have a cookieless embed. But since we have an interactieve project, my guess is that Cookies are needed.
And a cookieless Ivory embed is not going to happen (or going to work), correct?      

 A simple solution would be to show the viewer a text. I.e. video will play after accepting cookies, click here to accept cookies.

Is that the best solution or do you have other options?