With summer movie season at its midpoint, Hollywood typically begins to turn its gaze toward the fall, when a trio of major film festivals acts as the unofficial kickoff to Oscar season. But now that SAG-AFTRA and the Writers Guild of America are both on strike, could a protracted battle between the unions and the studios cause those fall launchpads to fizzle?

Though the writers’ strike, which began May 2, didn’t have much of an effect on the Cannes Film Festival that month, the actors’ strike that started Friday may significantly reshape coming fests in Venice, Telluride, Colorado, and Toronto. That’s because SAG-AFTRA is prohibiting members from promoting any film while the strike is on, an across-the-board ban that includes interviews, photo calls and red-carpet duties. Without those appearances, festivals will be sapped of the star power that is invaluable to raising a film’s profile.

The first event that will probably be affected is the Venice Film Festival, which begins its 80th edition on August 30 with the premiere of the sexy tennis comedy “Challengers,” starring Zendaya. Venice has lately rivaled Cannes for glamour and headlines, so the loss of actors would be a big blow. The festival will announce its full lineup on July 25, and buzz suggests it could include highly anticipated films like Bradley Cooper’s Leonard Bernstein biopic, “Maestro”; Sofia Coppola’s “Priscilla,” about the relationship between Elvis Presley and his wife, Priscilla; “The Killer,” a David Fincher thriller starring Michael Fassbender.

The Telluride Film Festival, which runs September 1-4should be less stricken by the absence of stars: That intimate Colorado gathering is a favourite of famous attendees because they’re not required to do photo ops or media blitzes.

But the Toronto International Film Festival, beginning September 7, is a heady 10-day affair filled with red carpets, portrait studios and press junkets that will all shrink if actors are forbidden to attend. There is a workaround, but it’s a slim one: Duncan Crabtree-Ireland, the SAG-AFTRA negotiator, said that “truly independent” films able to secure interim agreements with the guild could allow their stars to do media duties.

Still, that’s a proviso more likely to spare the indie-focused Sundance Film Festival in January rather than fall festivals, where the biggest titles tend to hail from major studios. And if the SAG strike continues, it will be more than just festivals that feel the pinch.

A months-long strike would hit the awards-season ecosystem with its toughest test since Coronavirus: If stars can’t attend ceremonies, could the events be held at all? (At least when these things were on Zoom, the nominated stars showed up.) Post-pandemic, prestige films need all the help they can get at the box office. If they can’t be sustained by awards chatter and media-happy movie stars, studios could opt to move some more vulnerable year-end titles to 2024. Will a deal in this bitter battle be reached in time to save awards season?

Even if both sides can compromise before the televised ceremonies begin, one change is likely to still be felt: Don’t expect the usual list of studio executives to be quite so effusively thanked in acceptance speeches.