It can be. (Sometimes it's converting literature into more literature.)
And at that point you need to pick a narrator, but in almost all cases if you're choosing 1st person or tight 3rd you're necessarily narrowing the POV, because unless it's a found footage canon the camera (or the audience, if it's live theatre or something) can see things that the individual characters can't. That's true even in something like Trainspotting where there's a strong narrative voice and it's very tight 3rd/a sort of pseudo-1st person, and it's much more true of an ensemble show like JS&MN which is filmed in 3rd omniscient or a very loose 3rd.
Re: DNW Workshop
And at that point you need to pick a narrator, but in almost all cases if you're choosing 1st person or tight 3rd you're necessarily narrowing the POV, because unless it's a found footage canon the camera (or the audience, if it's live theatre or something) can see things that the individual characters can't. That's true even in something like Trainspotting where there's a strong narrative voice and it's very tight 3rd/a sort of pseudo-1st person, and it's much more true of an ensemble show like JS&MN which is filmed in 3rd omniscient or a very loose 3rd.