This is restaurateur Angela Marsden, and she posted a video showing  a movie production in full swing -- with outdoor tables and tents set up right next door to her now-shuttered eatery, Pineapple Hill Saloon & Grill, in Sherman Oaks.

In the video, Marsden says she can't fathom why her restaurant was forced to shut down (again) -- even after she had successfully ran outdoor dining for months behind her building -- but film sets like this, which look virtually identical in set-up dining-wise, can soldier on.

The new rule -- restaurants close on-the-spot dining, while music/video production can keep rolling -- is one of many that have left Angelenos scratching their head as Mayor Garcetti has instituted a new stay-at-home order in the City, which just got expanded to all of SoCal.

In a section about activities and businesses allowed to keep operating, production in L.A. can continue -- which explains the Sherman Oaks set -- but it says clearly ... they gotta follow COVID protocols as outlined by the County.

That's where Marsden might be mistaken in her juxtaposition. Fact is ... there's a ton of rules that production companies must abide by in order to shoot, including regular testing, plus a bunch of other mandates ... mask-wearing, temp checks, social distancing, sanitized sets, etc.

The big difference is the testing, and who's allowed in or out. A movie or TV shoot can have an awful lot of people on hand (just like a restaurant) at any given time, but the dinstinction is that the set -- while it's shooting -- is treated almost like a bubble, whereas a restaurant is revolving door of strangers, who aren't required to get tested to partake.