Re: New DVR drops jaws in London

["jonsemailstuff" <jonsemailstuff@xxxxxxxxxxx>]

In the UK there are 6 digital MUXes. The bitrates for each of these are:

Mux1, MuxB, MuxC, MuxD = 8k, 16QAM, 3/4, approx 18Mbps
Mux2, Mux A = 8k, 64QAM 2/3, approx 24Mbps

Therefore you would need:

For Mux1, Mux B, Mux C and Mux D: 12GByte / day (18*8*60*60*24)
For Mux2, Mux A:  16.5GByte / day (24*8*60*60*24)

So for a Month (30 days) you would need 2.43TByte (12*30*4+16.5*30*2)

Not really all that rediculous really.

This assumes that all Muxes are full (which they aren't in the UK).
You could probably apply a certain amount of compression, although
MPEG data doesn't tend to compress too well, for obvious reasons.

You'd only need 1 DTT card to record each MUX.

Hope this makes sense! Appologies if I've dropped a decimal point
somewhere .....

Jon



--- In ukha_d@xxxxxxx, Bill Taylor <bill-taylor@b...> wrote:
> Jim wrote:
>
> JN> Stuart Grimshaw wrote:
>
> >> On 7/28/05, Mark McCall <lists@a...> wrote:
> >> > http://tinyurl.com/7hcp5
> >> >
> >>
> >> I saw that too, any PVR that claims to be able to record
every TV
> >> station simultainiuosly is going to have to have one hell of
a lot of
> >> hard drives, a PVR card for each channel, the asc. external
hardware
> >> ie set top boxes or statalite dishes depending on the source
and it's
> >> going to cost an absolute fotune!!
>
>
> JN> Maybe you could store a whole freeview multiplex bitstream...?
How many
> JN> multiplexes are there? (5 or 6 rings a bell)
>
> The Nebula DigiTV card has had the option to record a complete
> multiplex for some time. The new version of software, released
> today, can use multiple cards, presumably enabling the recording of
> multiple multiplexes on one PC.
>
> Bill