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How encryption for Cinema Movies works

(serverless.industries)
230 points perryflynn | 1 comments | 20 Apr 25 17:52 UTC | HN request time: 0.865s | source
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dherls ◴[21 Apr 25 03:49 UTC] No.43748376[source]▶
I'm confused why it's encrypted as a JPEG image per frame instead of one AES encrypted video file. Since the same AES key is used for each frame it wouldn't add any additional security imo
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1. KaiserPro ◴[21 Apr 25 07:55 UTC] No.43749386[source]▶
DCPs were designed to be jpeg200 streams with a bunch of audio streams as well.

The idea was that they wanted up to 16bit colour (per channel) lossless imagery. The encryption was (or so I recall) was an extra feature.