tony sayer wrote:
I
MPEG has some concept of video standard in that it will be encoded for a
particular resolution and frame rate to match PAL or NTSC standards as
used in the target country.

However, the option of "digital all the way" does not exist yet - at
least until analogue transmissions cease. Even then there will be
countless RF based distribution systems already installed for where this
consideration will need to be taken account of.

Don't you consider the current Freeview and Freesat transmissions are
digital all the way ?..

They are, but they are simulcast with the PAL analogue version as well.
So the requirements for setting broadcast levels still apply.


--
Cheers,

John.

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