Monster PVR
 

I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt

Monster PVR
 

larkim wrote:
I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt

The word for google is 'multirec' and the platform is MythTV. Quite
fancy doing the same myself :-)

--
Adrian C

Monster PVR
 

On 2 Oct, 13:29, larkim wrote:
I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day.

10 channels in a single mux would be trivial. One DVB-T card, and save
the entire transport stream to disk. 25Mbps has been doable on a
consumer PC for more than a decade (e.g. DV capture).

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

That's multiple muxes. Storing 2 or 3 entire muxes is also fairly
easy, but if you want to split out the individual streams in real time
when capturing (i.e. before storing) - someone who has actually tried
that will have to comment!

btw, I'm not sure about the availability of CBeenies - is this a new
BBC worldwide merchandising thing? ;)

Cheers,
David.

Monster PVR
 

On Oct 2, 1:49*pm, 2Bdecided wrote:
On 2 Oct, 13:29, larkim wrote:

I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day.

10 channels in a single mux would be trivial. One DVB-T card, and save
the entire transport stream to disk. 25Mbps has been doable on a
consumer PC for more than a decade (e.g. DV capture).

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

That's multiple muxes. Storing 2 or 3 entire muxes is also fairly
easy, but if you want to split out the individual streams in real time
when capturing (i.e. before storing) - someone who has actually tried
that will have to comment!

btw, I'm not sure about the availability of CBeenies - is this a new
BBC worldwide merchandising thing? ;)

Didn't you know, BBC has started making hats, but they are
deliberately mis-spelling their name as a marketing ploy.

Matt

Monster PVR
 

On Oct 2, 1:46*pm, Adrian C wrote:
larkim wrote:
I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. *Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt

The word for google is 'multirec' and the platform is MythTV. Quite
fancy doing the same myself :-)

--
Adrian C

Or alternatively you could simply have 10 tuner cards. Multirec just
allows you to theoretically record just 6 multiplexes and therefore
record all transmissions.

The key is storage though. Just curious how many TB would be required
(not to mention the amount of power required - *not* a green
technology!)

Matt

Monster PVR
 

On Oct 2, 1:49*pm, 2Bdecided wrote:
On 2 Oct, 13:29, larkim wrote:

I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day.

10 channels in a single mux would be trivial. One DVB-T card, and save
the entire transport stream to disk. 25Mbps has been doable on a
consumer PC for more than a decade (e.g. DV capture).

So is the logic Mbps * 60s * 60m * 24hr / 8 = MB storage

So a 25Mbps mux in its entirety would take 270GB to store
(thereabouts)?

Matt

Monster PVR
 

larkim wrote:
On Oct 2, 1:46 pm, Adrian C wrote:
larkim wrote:
I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. Presumably its a straight(ish)forward conversion of
data rates into storage?
Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4
Matt
The word for google is 'multirec' and the platform is MythTV. Quite
fancy doing the same myself :-)

--
Adrian C

Or alternatively you could simply have 10 tuner cards. Multirec just
allows you to theoretically record just 6 multiplexes and therefore
record all transmissions.

The key is storage though. Just curious how many TB would be required
(not to mention the amount of power required - *not* a green
technology!)

OK, it's probably do'able now that we are in TB drive territory. I can't
do the sums now but remember some fuss made years back on stacking
several drives for freeview. Someone did a web page, BBC perhaps?

Anyway, I'd spilt the drives into two banks. Buffer & Viewing banks.

Firstly I'd have enough in the first bank to buffer one day or two
(because almost always it's someone talking the next day in/on the media
about something wonderful on TV).

I'd then schedule some process to demux & transfer recordings that have
been made, or about to be made - to an external hard drive (for watching
- maybe have several of these USB things for different household
occupants), with further automated backup to optical media if programs
not watched on that within a period of time. It would then keep the
buffer drives clear for continous 24/7 capture, and remove the need for
complicated garbage collection.

--
Adrian C

Monster PVR
 

Kind of reminded me of a gizmo for a vcr that was built that could record
the whole of medium wave for a night.

grin.
Brian

--
Brian Gaff -
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"larkim" wrote in message
...
I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt

Monster PVR
 

In an earlier contribution to this discussion,
larkim wrote:

I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt


What's the point - unless you've got a machine to *watch* it all for you?!
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

Monster PVR
 

Roger Mills wrote:

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt


What's the point - unless you've got a machine to *watch* it all for you?!

Ah, the failings of the electric monk ;-)

"This Monk had first gone wrong when it was simply given too much to
believe in one day. It was, by mistake, cross-connected to a video
recorder that was watching eleven TV channels simultaneously, and this
caused it to blow a bank of illogic circuits. The video recorder only
had to watch them, of course. It didn't have to believe them as well.
This is why instruction manuals are so important."

--
Adrian C

Monster PVR
 

Roger Mills wrote:
In an earlier contribution to this discussion,
larkim wrote:

I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt


What's the point - unless you've got a machine to *watch* it all for you?!

Well there is a certain logic to no longer needing to remember to record
a program. Just buffer everything, and then decide what to not discard
from time to time.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Monster PVR
 

"John Rumm" wrote in message
o.uk...



What's the point - unless you've got a machine to *watch* it all for
you?!

Well there is a certain logic to no longer needing to remember to record a
program. Just buffer everything, and then decide what to not discard from
time to time.




the Iplayer - and the other channel's equivalents have rendered it less
desireable.



--
Gareth.

that fly...... is your magic wand....

Monster PVR
 

On 2 Oct, 17:02, Adrian C wrote:
larkim wrote:
On Oct 2, 1:46 pm, Adrian C wrote:
larkim wrote:
I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. *Presumably its a straight(ish)forward conversion of
data rates into storage?
Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4
Matt
The word for google is 'multirec' and the platform is MythTV. Quite
fancy doing the same myself :-)

--
Adrian C

Or alternatively you could simply have 10 tuner cards. *Multirec just
allows you to theoretically record just 6 multiplexes and therefore
record all transmissions.

The key is storage though. *Just curious how many TB would be required
(not to mention the amount of power required - *not* a green
technology!)

OK, it's probably do'able now that we are in TB drive territory. I can't
do the sums now but remember some fuss made years back on stacking
several drives for freeview. Someone did a web page, BBC perhaps?

Anyway, I'd spilt the drives into two banks. Buffer & Viewing banks.

Firstly I'd have enough in the first bank to buffer one day or two
(because almost always it's someone talking the next day in/on the media
about something wonderful on TV).

I'd then schedule some process to demux & transfer recordings that have
been made, or about to be made - to an external hard drive (for watching
- maybe have several of these USB things for different household
occupants), with further automated backup to optical media if programs
not watched on that within a period of time. It would then keep the
buffer drives clear for continous 24/7 capture, and remove the need for
complicated garbage collection.

,,,or just use iPlayer!

Cheers,
David.

Monster PVR
 

John Rumm wrote:
Roger Mills wrote:
In an earlier contribution to this discussion,
larkim wrote:

I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt


What's the point - unless you've got a machine to *watch* it all for
you?!

Well there is a certain logic to no longer needing to remember to record
a program. Just buffer everything, and then decide what to not discard
from time to time.

....the same logic as: buy every book in print, then decide later which
ones you want to read?

Sledgehammer and walnut cracking come to mind.

--
George from Cartland

Monster PVR
 

"George" wrote in message
...
John Rumm wrote:
[...]

Well there is a certain logic to no longer needing to remember to record
a program. Just buffer everything, and then decide what to not discard
from time to time.

...the same logic as: buy every book in print, then decide later which
ones you want to read?

Sledgehammer and walnut cracking come to mind.

More like moving next to a library.

--
Max Demian

Monster PVR
 

On 5 Oct, 09:32, George wrote:
John Rumm wrote:
Roger Mills wrote:
In an earlier contribution to this discussion,
larkim *wrote:

I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. *Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt

What's the point - unless you've got a machine to *watch* it all for
you?!

Well there is a certain logic to no longer needing to remember to record
a program. Just buffer everything, and then decide what to not discard
from time to time.

...the same logic as: *buy every book in print, then decide later which
ones you want to read?

....but when a new book is published, it costs you money to buy it.
When a new programme is broadcast, it costs you nothing to record it
over the top of one from last week that you don't want to keep.

Based on the faulty assumption (from my POV) that there's enough on
that I might wish I'd seen to record it all just in case. Quite the
opposite. Got a PVR - can't find anything worth filling it with!

Cheers,
David.

Monster PVR
 

On Oct 5, 1:22*pm, 2Bdecided wrote:
On 5 Oct, 09:32, George wrote:





John Rumm wrote:
Roger Mills wrote:
In an earlier contribution to this discussion,
larkim *wrote:

I believe some of these have been created, but I'm curious what the
requirements are to record everything from (say) 10 digital channels
24 hours per day. *Presumably its a straight(ish)forward conversion of
data rates into storage?

Based on current transmissions, lets assume recording of:-
BBC1
BBC2
BBC3/CBeenies
BBC4/CBBC
ITV1
C4
Five
More4
E4
Film4

Matt

What's the point - unless you've got a machine to *watch* it all for
you?!

Well there is a certain logic to no longer needing to remember to record
a program. Just buffer everything, and then decide what to not discard
from time to time.

...the same logic as: *buy every book in print, then decide later which
ones you want to read?

...but when a new book is published, it costs you money to buy it.
When a new programme is broadcast, it costs you nothing to record it
over the top of one from last week that you don't want to keep.

Based on the faulty assumption (from my POV) that there's enough on
that I might wish I'd seen to record it all just in case. Quite the
opposite. Got a PVR - can't find anything worth filling it with!

Cheers,
David.

I'm not considering building one, but the thought of it does interest
me a little. The point is that it completely shifts the paradigm of
TV being something that you watch when it is broadcast. Instead, you
can watch something once it has been broadcast. If my calcs above
were correct, you'd only need about 50 x 2TB discs to record
everything the BBC outputs every day for a whole year, and that's not
making allowances for the amount of repeats.

The concept of something being "broadcast" is going to disappear in a
few years time, I suspect, or else broadcasters will have to come up
with a way of preventing technologies such as "monster PVRs" from
storing the data - DRM of course is the current way of doing it.

I suppose its like the idea of Spotify for video. Imagine if Spotify
had every episode of every major TV programme for the last 20 years
available, and at a video quality that was acceptable to watch. Then
bolt on a choice of whether to watch it with adverts or as a
subscription model.

Matt