Is this HD?
 

"Drewdawg" wrote in message
news:[email protected]
There are many of us in this newsgroup who would like to thank you for
setting Bob straight. For someone from the UK disputing Bob's claims this
post was long overdue and enjoyed by all (except BM). Thanks mattk!

Drewdawg

mattk wrote:
"Bob Miller" wrote in message
...
People are receiving HD using DVB-T in London. They have a test
going on there.

True

People report being able to receive this HD broadcast with Freeview
receivers.

Not true. They may find the four HD channels appear in the EPG but
they will be unable to watch anything since the hardware inside the
receivers is exclusively designed for SD MPEG2.

If true this may be because the receiver or integrated HDTV was made
with HD reception in mind. DVB-T is capable of receiving HD. It is
being used in Australia.


The tests use MPEG4 AVC, the MPEG2 decoders inside set-top boxes sold
in Europe won't receive it, nor would an Australian HD receiver. Even
a French MPEG4 HD STB won't tune into the UK HD transmissions.

Some DVB-T receivers being sold in the UK are upgradeable OTA.

Yes, but the decoding of the video stream is done with hardware, not
software, therefore cannot be upgraded over the air.

You also obviously can't receive an OTA upgrade which will magically
add an HD output (like component or HDMI). Pretty much all set-top
boxes sold in the UK only have a composite and RGB SD output, no
component and no HDMI. Likewise the TV is unlikely to have been
designed to support anything higher than 576i as far as the internal
digital tuner is concerned.

A high-end PC struggles to decode the MPEG4 AVC HD streams live, the
basic silicon inside a digital receiver doesn't stand a chance of
being able to do it with software.

Many can be upgraded to receive MPEG4 and receive 8K COFDM. How many
I don't know. Maybe most. Check with your vendor or ask on


I wouldn't say many. It may be possible to upgrade some with a
suitable slot using something like this;
http://www.neotion.com/products/modules.php however it still won't
get around the fundamental issue of the hardware only being designed
to output an SD 576i signal.

http://www.idtv.co.uk/
http://www.digitalspy.co.uk/forums/f...play.php?f=158

Bob Miller


Here's yet another thread where bob was set straight by a real-world user:

"It still isn't immune from (impulse noise problems) though, noticably
towards the edges of the service area where field strength is low, or in
homes with poor aerials the weaker digital signal (especially channels using
the less robust 64QAM modulation) is still prone to impulsive interference."

No reply by bob, of course.


http://www.digitalspy.co.uk/forums/s...d.php?t=205206