[mythtv-users] HDMI over IP

[Jeff]

On Wed, Sep 16, 2009 at 7:46 AM, Mike Perkins
<mikep at randomtraveller.org.uk>wrote:

> Nick Rout wrote:
>
>> On Wed, Sep 16, 2009 at 2:43 PM, Allen Edwards
>> <allen.p.edwards at gmail.com> wrote:
>>
>>> On Tue, Sep 15, 2009 at 7:40 PM, Nick Rout <nick.rout at gmail.com> wrote:
>>>
>>>> There is a transmitter and a receiver. They must be doing something to
>>>> the stream. The pdf datasheet says "AV  signals  are transmitted
>>>> digitally over the CAT5/6/7 cable without any signal loss. Internal
>>>> JPEG  video  compression  adapts  to available network bandwidth  if
>>>> needed."
>>>>
>>>> Whatever that means, the second sentence seems to imply some
>>>> processing/compression.
>>>> _
>>>>
>>> It sounds like they are just using Cat5 cable and not an IP protocol.
>>>
>>
>> Yes it does, but their own advertising specifically disclaims that, eg:
>>
>> "Not an HDMI Balun, but an HDMI over IP system. This means you can
>>
>>  Doesn't this break one of the basic tents of HDMI? I thought that the
> signal path had to be secure from end to end, so that no 'pyrates' could tap
> the signal and make off with their precious IP?
>
> If you turn the signal into genuine TCP/IP (as opposed to the other sort of
> IP) then anyone can leech the signal and figure out how it all works.
>

That's exactly what I was thinking...  And if they're able to re-compress it
using JPEG, then I would think that they've got to be de-crypting the video,
compressing it, and perhaps re-encrypting it.

J-e-f-f-A
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