Mainstream (2021) runs 1 h 35 min, is rated R in the US and averages 6.3 from 392 TMDB members. A young woman thinks she’s found a path to internet stardom when she starts making YouTube videos with a charismatic stranger – until the dark side of viral celebrity threatens to ruin them both.
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Streaming availability by JustWatch. In the US, as of 2026-11-05: Philo (subscription), YouTube (subscription), AMC Plus Apple TV channel (subscription), AMC+ Amazon Channel (subscription), AMC+ Roku Premium Channel (subscription), AMC+ (subscription), Sundance Now (subscription), MUBI (subscription), Kanopy (free).
Mainstream on TMDB · This product uses the TMDB API but is not endorsed or certified by TMDB.

Lights Down is a free tool: tell it your streaming services and how long you have, and it ranks what you can stream tonight, with a this-or-that, a roll, a bracket and a wheel. Movie data from TMDB; streaming availability by JustWatch. Page updated 2026-11-05. This product uses the TMDB API but is not endorsed or certified by TMDB. Lights Down is a Somebody Decide program. How the data works · Legal & privacy · Tonight's lists