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According to Wikipedia they squeeze 36 bits/pixel down to 4.71 bits/pixel for a 2K 24FPS movie. That's over 7x - gzip would be hard pressed to get up to 2x. I'm
by mark-r 13y ago
According to Wikipedia they squeeze 36 bits/pixel down to 4.71 bits/pixel for a 2K 24FPS movie. That's over 7x - gzip would be hard pressed to get up to 2x. I'm sure part of the reason they need compression is to send the data over the wire rather than shipping physical media all the time.
[1] http://en.wikipedia.org/wiki/Digital_Cinema_Initiatives#Image_and_audio_capability_overview http://en.wikipedia.org/wiki/Digital_Cinema_Initiatives#Imag...
- yuhong 13y agoI believe that typically DCP movies are delivered via hard drive or satellite.
- e12e 13y agoOne of the benefits is that ingestion is flexible -- In general movies can be distributed via broadband (well in advance of release too, as the files are unplayable without decryption keys). For stuff like film festivals there's usually crates and crates of HDs :-)
- jfb 13y agoThis is why bandwidth isn't really a gating concern -- it's a mastered, offline format, so you don't need to squeeze all the possible bits out of the final package.