I relate to this issue and here are things that helped...
There are a few key things one can do to be able to grasp onto a movie and stay with it:
Choose a movie you believe you have a strong interest for. Don't put much creedance in previews or opinions. Find your own movie your way.
See it alone. Aspies have very unique, individualized minds. This, like reading a book, has to be done alone. - imagine reading a good book with a friend and every 10 minutes she puts her finger on your page and says "omg, did you Read what they just typed??"
If the movie is one of the rare ones that deserve to be seen on a theatre big screen viewing - go in the afternoon on a weekday. But most movies are just as easily consumed at home.
Have the same mindset with watching a movie just as you would reading a book....
•set aside a timeblock to watch
•realize there will be interuptions, calls, dinner, bathrooms, etc.
•when there are interuptions 'bookmark' your paused location just as you would a book. - your brain can pick up the action again when you return (just like it does for a book).
•if it is too interesting at a certain point, put off the bedtime till later...just like you do with a good book!
•rewind if you need to 'get' something... I often go back a few pages in a book because of.."wait wait, what now?"
•if you just can't connect with a movie...well... I've had books like that too. it doesn't mean every book or movie is impossible.
•especially long movies require more dedication..just like a fat book! it all comes down to your hunger for the story.
The one thing that could prevent being able to view movies would be sensory issues.. too fast paced, too bright or flashy imaging, noise levels. This would be tough to overcome.