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» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » Will a IMB (Link input) take a HDBaseT signal ?

   
Author Topic: Will a IMB (Link input) take a HDBaseT signal ?
Alan Gouger
Jedi Master Film Handler

Posts: 501
From: Bradenton, FL, USA
Registered: Jul 2000


 - posted 01-05-2013 01:19 AM      Profile for Alan Gouger   Author's Homepage   Email Alan Gouger   Send New Private Message       Edit/Delete Post 
Curious if any of the new IMBs ( Link input ) would be compatible with HDBaseT for non HDCP alternative content. HDBaseT is replacing HDMI on the consumer side combining both audio and video up to 4k @ 24fps or 1080p @ 60fps over a single cat5.

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Marcel Birgelen
Film God

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From: Maastricht, Limburg, Netherlands
Registered: Feb 2012


 - posted 01-05-2013 04:21 AM      Profile for Marcel Birgelen   Email Marcel Birgelen   Send New Private Message       Edit/Delete Post 
I haven't seen one yet, but I guess you could use a simple HDBase-T adapter/extender to go from HDBase-T back to HDMI.

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Alan Gouger
Jedi Master Film Handler

Posts: 501
From: Bradenton, FL, USA
Registered: Jul 2000


 - posted 01-05-2013 10:18 AM      Profile for Alan Gouger   Author's Homepage   Email Alan Gouger   Send New Private Message       Edit/Delete Post 
Or take an HDMI from a media player into a HDBaseT converter then cat5 containing both audio and video into
an IMB.

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Marcel Birgelen
Film God

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From: Maastricht, Limburg, Netherlands
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 - posted 01-05-2013 11:02 AM      Profile for Marcel Birgelen   Email Marcel Birgelen   Send New Private Message       Edit/Delete Post 
quote: Alan Gouger
Or take an HDMI from a media player into a HDBaseT converter then cat5 containing both audio and video into
an IMB.

Sure, but that would indeed require a HDBase-T compliant connector on an IMB and I haven't seen one yet.

I guess HDBase-T is still too new and it will take some time before this will get added to professional equipment. HDMI is a proven format, not without its own set of issues, but it works most of the times.

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Carsten Kurz
Film God

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From: Cologne, NRW, Germany
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 - posted 01-05-2013 02:19 PM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
http://www.hdbaset.org/certification/certified_products

It seems this will never make it into signal sources or sinks directly, but will stay a conversion-to/from-only thing.

I mean, there is HD-SDI in various forms, and HDMI/DVI/DP - it's hard for a new interface to get a share when it offers only few very specific benefits.

- Carsten

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Marcel Birgelen
Film God

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From: Maastricht, Limburg, Netherlands
Registered: Feb 2012


 - posted 01-05-2013 04:03 PM      Profile for Marcel Birgelen   Email Marcel Birgelen   Send New Private Message       Edit/Delete Post 
quote: Carsten Kurz
It seems this will never make it into signal sources or sinks directly, but will stay a conversion-to/from-only thing.
Maybe if it proves itself, it might one day not too far in the future. I can see the benefit of it, although also many new compatibility pitfalls.

But running the equivalent of HDMI trough a normal Cat5e/Cat6 cable at an affordable price, allows for many interesting applications.

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Alan Gouger
Jedi Master Film Handler

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From: Bradenton, FL, USA
Registered: Jul 2000


 - posted 01-05-2013 06:58 PM      Profile for Alan Gouger   Author's Homepage   Email Alan Gouger   Send New Private Message       Edit/Delete Post 
With most of the new IMBs ( Dolby in this case ) only the Link is activated that leaves no way to get consumer 3D into the projector. Without HDSDI you can no longer use the Doremi 3d Dimension. The only option would be to use a duel DVI 3D processor which I am not aware of any. What is the Link standard, anyway to convert HDSDI to a compatible Link connection?

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 01-05-2013 08:33 PM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
I'm not aware of all implementations, but at least some IMBs have HD-SDI connections as well (no Cinelink on those, though). The Dolby has HDMI and HD-SDI, but these are not operational for now. But sure will be through a firmware upgrade.

Some, like Doremi and Sony, also offer consumer 3D input through HDMI (+ HDMI audio passthrough on the Doremi).

So far, no quick switching between standard Inputs and IMB is possible due to remarriage issues. So an IMB with some added I/O options is advisable for screens with a need for alternative content.

- Carsten

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 01-05-2013 09:02 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
GDC also has non-implemented yet HDMI and HDSDI inputs (referring to the HFR IMB).

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