[opendtv] Re: BBC Demonstrates HDTV Broadcasts over SD Channels
- From: "Hoffmann, Hans" <hoffmann@xxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 22 Jun 2005 13:03:07 +0200
Ron,
which STB chips set manufactures will support 1080p/60?
Regards,
Hans
European Broadcasting Union
Hans Hoffmann - Senior Engineer=20
Technical Department
Ancienne Route 17a
CH-1218 Grand Saconnex Geneva
Switzerland
Tel:+41 22 717 2746
Tel-Mobile: +41 79 249 3550
Fax: +41 22 747 4746
E-Mail: hoffmann@xxxxxx
> -----Original Message-----
> From: opendtv-bounce@xxxxxxxxxxxxx=20
> [mailto:opendtv-bounce@xxxxxxxxxxxxx] On Behalf Of Ron Economos
> Sent: mercredi, 22. juin 2005 12:48
> To: opendtv@xxxxxxxxxxxxx
> Subject: [opendtv] Re: BBC Demonstrates HDTV Broadcasts over=20
> SD Channels
>=20
>=20
> Remember that 1080p is really 1088p. The maximum
> MPEG-2 sample rate of 62,668,800 samples/sec is
> equal to 1920x1088x30.
>=20
> When H.264 and/or VC-1 is included in ATSC, 1080p@60
> will be allowed.
>=20
> Ron
>=20
> John Willkie wrote:
>=20
> >my bad. I would also note that 1080p at 30 fps (I've done the=20
> >calculaiton) has just under (by a hair) the MPEG-2=20
> limitation for video=20
> >samples per second. I was addressing 1080p at > 30fps.
> >
> >John Willkie
> >
> >----- Original Message -----
> >From: "John Shutt" <shuttj@xxxxxxxxx>
> >To: <opendtv@xxxxxxxxxxxxx>
> >Sent: Tuesday, June 21, 2005 11:38 AM
> >Subject: [opendtv] Re: BBC Demonstrates HDTV Broadcasts over=20
> SD Channels
> >
> >
> > =20
> >
> >>John,
> >>
> >>I point you to the infamous table 3 (now A3) of A/53c and note that=20
> >>1080p
> >> =20
> >>
> >at
> > =20
> >
> >>23.976, 24, 29.97, and 30 frames per second are valid compression=20
> >>formats.
> >>
> >>Nobody ever mentioned 1080p at 60 fps.
> >>
> >>John
> >>
> >>----- Original Message -----
> >>From: "John Willkie" <JohnWillkie@xxxxxxxxxxxxx>
> >>
> >>
> >> =20
> >>
> >>>Uh, tom, just how will those affordable 1080p pictures be=20
> delivered=20
> >>>to people? In other words, what type of transport streams?
> >>>
> >>>Are you familiar with the fact that 1080p uses more samples per=20
> >>>second than is permitted by MPEG-2 transport streams? (that being=20
> >>>just under 63 MM samples per second)
> >>>
> >>>Could you point me to the affordable transport streams that will=20
> >>>handle this format?
> >>>
> >>>John Willkie
> >>> =20
> >>>
>=20
> =20
> =20
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