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All posts by Petrev

Below are all of Petrev's postings, with the most recent are at the bottom of the page.


Hi Brian,

UK Digital TV Reciever Recommendations Version 1.5 stated "should" transcode. This was changed in V1.7 May 2010 to "shall" transcode.

The first boxes released in May 2010 did not transcode the HE-AAC stream. Some manufacturers did not know that the stream was not being broadcast with AC-3 audio as had been supplied to them for pre-launch testing. No PVR boxes had transcoding at launch. The DigitalStream box added transcoding via a firmware update in June 2010. The Humax launched in August 2010 with transcoding built in. Other boxes have slowly added transcoding over an extended period.

Whatever the guidelines state now the testing and certification process for boxes before Jan 2011 did not require transcoding. D-Book 6.2.1 came into force in April 2011 and boxes released after that date certainly have to have transcoding.

More information on the 5.1 debacle and Freeview HD equipment can be found . . .

Gone Digital | FreeviewHD and surround sound
Gone Digital | Transcoding surround sound for FreeviewHD
Gone Digital | The magic number: 6.2.1

(BA17BW)

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Sorry that should of course be "Receiver" in line one !

Just had to retype everything as first attempt got lost in the digital void. Please excuse any other typos !!!

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Hi

from the BBC Blog

"However to help manufacturers develop products sometimes it is necessary to mandate certain features only after a suitable period has elapsed after publication in the D Book. So transcoding will become mandatory in all product launched after April 2011. In the meantime some manufacturers have already shown the capability of uploading this into existing deployed designs."

BBC - BBC Internet Blog: Questions around surround sound on Freeview HD



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Sunday 14 October 2012 4:00PM

Hi Brian,

Your New Look Freeview Transmitter page, eg. Freeview reception at BA1 XXX, now only shows my predicted "Best" TX (Bath) and not all available at my Location as it used to.

This may be clearer and simpler for most, but it is no use to me as I have my aerial pointed at the Main (more distant but still 100%) TX at Mendip and not the Bath Local Relay.

You used to show all transmitters at a location, with the "Best" first, and even those that appear to be out of sight. This was very useful as on occasions I did get odd tuning events where a much more distant and normally out of sight TX (Stockland Hill) would be tuned due to atmospherics and I could tell what it was and why this was happening (much further away but in exact same direction as my aerial pointed at Mendip).

The DigitalUk site still lists Bath and Mendip as alternatives for me (Bath first of course - They have dropped Box which is now only given as a possible on the BBC page). Maybe you could add a Tab or Option (?) for ALL as well as the current BEST (set as default) Transmitter, so that we can get back the excellent Tuning and Terrain info for all, not just the supposed "Best" which in my case, and no doubt many others, is not the best !

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Sunday 14 October 2012 4:12PM

Hi (again)

Just looked at some others info, from above posts, and they do show alternatives that are presumably definite line of sight transmitters - My address must be erroniously returning that Mendip is not visible.

It would be good to add back the presumed "out of sight" transmitters as per your old method, but maybe you could put them below a big red line to point out that they may not be visible/useable at the current location. I think they used to have a different Icon ?

Keep up the good work
Cheers
Pete

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Sunday 14 October 2012 8:21PM

Thanks Stephen - Very useful.

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