# How are movies delivered to movie theaters in the digital age? **URL:** \ **Category:** Cafe Society\ **Tags:** movies\ **Created:** [July 2, 2025, 10:03pm UTC](https://boards.straightdope.com/t/how-are-movies-delivered-to-movie-theaters-in-the-digital-age/1020417 "2025-07-02T22:03:29Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Drum\_God](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/drum_god/32/44_2.png) [@Drum\_God](https://boards.straightdope.com/u/Drum_God)\ **Post date:** [July 2, 2025, 10:03pm UTC](https://boards.straightdope.com/t/how-are-movies-delivered-to-movie-theaters-in-the-digital-age/1020417/1 "2025-07-02T22:03:29Z")
That’s really the question. Do theaters download the movie from a website? Are the movies delivered on some sort of physical device, like a flash drive? Since the movie is simply a computer file, how do studios prevent unauthorized copying or retention of their property? (In broad strokes – I’m not looking for instructions on how to commit a crime!) Are some movies still delivered in big cases of actual film? ---
**Author:** ![DCnDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/dcndc/32/2842_2.png) [@DCnDC](https://boards.straightdope.com/u/DCnDC)\ **Post date:** [July 2, 2025, 10:17pm UTC](https://boards.straightdope.com/t/how-are-movies-delivered-to-movie-theaters-in-the-digital-age/1020417/2 "2025-07-02T22:17:00Z")
In a sealed yellow flight case containing a 500 GB hard drive. The film(s) are in a format called DCP (“Digital Cinema Package”) that must be “unlocked” with a valid KDM code (“key delivery message”). The projectionist slides the whole thing into a slot in the projector, types in the code, and viola! Movie! Files can also be downloaded via an encrypted connection. ---
**Author:** ![kenobi\_65](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kenobi_65/32/13178_2.png) [@kenobi\_65](https://boards.straightdope.com/u/kenobi_65)\ **Post date:** [July 2, 2025, 10:17pm UTC](https://boards.straightdope.com/t/how-are-movies-delivered-to-movie-theaters-in-the-digital-age/1020417/3 "2025-07-02T22:17:55Z")
When theaters first switched from analog (physical film) to digital, the digital film files were typically sent on physical hard drives. Now, it looks like, yeah, it’s becoming more common for theaters to directly download the movie files, either via satellite or internet connection. And, there’s an encryption protocol involved, to prevent piracy. > **[DCP: What Is A Digital Cinema Package And How Does It Work? - MASV](https://massive.io/file-transfer/dcp-what-is-a-digital-cinema-package/)** > > A digital cinema package is the standard delivery format for film screenings at a digital cinema. Learn about what they are, how they're used, and more! ---
**Author:** ![Drum\_God](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/drum_god/32/44_2.png) [@Drum\_God](https://boards.straightdope.com/u/Drum_God)\ **Post date:** [July 2, 2025, 10:41pm UTC](https://boards.straightdope.com/t/how-are-movies-delivered-to-movie-theaters-in-the-digital-age/1020417/4 "2025-07-02T22:41:36Z")
Wow. Does this DCP format also facilitate live programs? I’ve seen advertisements for live events played at a movie theater. ---
**Author:** ![kenobi\_65](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kenobi_65/32/13178_2.png) [@kenobi\_65](https://boards.straightdope.com/u/kenobi_65)\ **Post date:** [July 2, 2025, 10:44pm UTC](https://boards.straightdope.com/t/how-are-movies-delivered-to-movie-theaters-in-the-digital-age/1020417/5 "2025-07-02T22:44:53Z")
I’ve attended a few of those “live events,” and I believe that those are done via a satellite link. In one case (a special theater viewing of a _Doctor Who_ program), while we in the theater waiting, the theater ran into technical issues with their satellite link, and they had to cancel it and refund our money (as there was no way to “show it later”). ---
**Author:** ![commasense](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/commasense/32/3017_2.png) [@commasense](https://boards.straightdope.com/u/commasense)\ **Post date:** [July 4, 2025, 2:30pm UTC](https://boards.straightdope.com/t/how-are-movies-delivered-to-movie-theaters-in-the-digital-age/1020417/6 "2025-07-04T14:30:10Z")
To expand on this slightly, the KDM can specify precisely how many shows, on which specific projector, at what times, on what days, the theater is permitted to run the film, or it can put no restrictions on playback, at the rights holder’s discretion. If the theater wants to run the film longer than the KDM permits, the distributor sends them a new KDM, usually by e-mail. ---
**Author:** ![salinqmind1](https://avatars.discourse-cdn.com/v4/letter/s/958977/32.png) [@salinqmind1](https://boards.straightdope.com/u/salinqmind1)\ **Post date:** [July 4, 2025, 2:34pm UTC](https://boards.straightdope.com/t/how-are-movies-delivered-to-movie-theaters-in-the-digital-age/1020417/7 "2025-07-04T14:34:19Z")
In the 70’s my father was a theater manager for several movie theaters in the area. Big reels of the films were sent by bus, he would go down and pick them up and bring them home. To take to the theater later.