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» Film-Tech Forum ARCHIVE   » Community   » Film Handlers' Movie Reviews   » Star Trek IV: The Voyage Home (Page 2)

 
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Author Topic: Star Trek IV: The Voyage Home
Marcel Birgelen
Film God

Posts: 3357
From: Maastricht, Limburg, Netherlands
Registered: Feb 2012


 - posted 11-17-2013 07:59 PM      Profile for Marcel Birgelen   Email Marcel Birgelen   Send New Private Message       Edit/Delete Post 
quote: Frank Angel
So there is no way at all possible to copy a BluRay to DcP without quality degradation? Surely in this day and age, someone should be able to come up with software that can do that -- what about all that business about 1s and 0s make perfect copies with NO degradation? Why can't a straight forward one-to-one identical copy be made of the BR/DVD -- skipping all the crap, of course?
The reason why you can't is simple: Practically all current Blu-Rays use H.264.

DCPs do currently not support H.264 and also no uncompressed image data. Also, the color space of Blu-Rays is different than that of DCPs. So, you need to decompress your H.264 stream and compress it again, either using JPEG2000 or MPEG2.

So, DCPs aren't the solution. The solution is a server or IMB that can play H.264 compressed files directly.

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