PatrickFaith
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Important point. The spec I think things are built on is at : http://www.dcimovies.com/DCIDigitalCinemaSystemSpecv1_2.pdf and on page 41 states the maximum rate for both 2k and 4k(so i think your right).It's my understanding that a 4K DCP is exactly the same size a 2K DCP, because they have a locked maximum bitrate. Is that correct?
It's written a bit tricky:
• A 4K distribution shall have a maximum of 1,302,083 bytes per frame (aggregate of all
three color components including headers). Additionally, the 2K portion of each frame
shall satisfy the 24 FPS 2K distribution requirements as stated above.
Note: For information purposes only, this yields a maximum of 250 Mbits/sec total and a
maximum of 200 Mbits/sec for the 2K portion of each color component