[Xiph-Advocacy] Vorbis and Dirac for digital cinema?
deanas at earthlink.net
Sun Aug 3 01:31:41 PDT 2008
Hi, I'm Dean, an aspiring movie theater entrepreneur. One big
opportunity I see in digital cinema is for better codecs. Currently,
the Hollywood/Digital Cinema Initiative system use JPEG2000 for video
and uncompressed WAV for audio. These are hardly the most efficient
ways to transmit video and audio, but Hollywood seems content with them
for now because they're still much less expensive than sending cans of
film in the mail, plus Hollywood doesn't want to pay royalties for
codecs. But movie theaters may soon be showing a much larger volume of
content than they are now: Theoretically, everything that's popular on
TV can be shown in movie theaters with digital projectors, and new shows
and movies could be shown as little as once a week, not 35 times a week
as they do now, so theaters could show many times as much content per
week as they do now without building more screens. Movie theaters need
to watch costs nowadays, so more efficient compression would be
preferable to more bandwidth.
So, could Ogg come to the rescue? Vorbis and Dirac seem like big
improvements over WAV and JPEG2000 for the purpose of movies. Maybe you
guys could pitch these Ogg codecs to the DCI people.
Here's the link to the Digital Cinema Initiative, the standards body for
digital distribution and projection in movie theaters.
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