SAG-AFTRA actors are facing a load of rules as the strike goes into effect ... and we're talking about everything, from acting on camera to even tweeting about projects.
TMZ has obtained a copy of the rigorous guidelines the 160,000 union members are required to follow until the strike ends ... and it cites the expected no-nos like acting, singing, and doing motion capture work in front of a camera.
But that's just the tip of the iceberg, because they also aren't allowed to do any voice acting, narrating, or re-recording their voice for a scene, also known as dubbing.
In addition, performers can't attend costume fittings, makeup tests, or rehearsals and they can't audition for upcoming projects.
There's also a ban on promotion, in every form -- they can't do interviews, tours, fan expos and conventions, podcast appearances, award shows or even post about a project on social media.
It appears pre-recorded promos are fair game for the studios, but SAG-AFTRA's asked publicists to add a disclaimer in front of pre-deadline press junkets so some actors don't come off as scabs down the line.
Stand-ins and background actors in the union are also forbidden from crossing that picket line ... leaving options incredibly limited for any shows or movies staying in production. Also, anyone not in SAG-AFTRA that crosses the line won't be getting future entry into the union.
As we reported, a handful of panels and signings at San Diego Comic-Con have already been canceled, while others that typically include celebs are expected to follow before the event starts next week.