Ondigital Football Picture Quality - unwatchable
Jack Dalston
appauled by the picture quality. When the camera was moving quickly
following the action the green pitch looked blurred like it had heat mist
over it. The sharpness of the players and other stuff was naff as well. When
there was closeups things were ok but on long shots it was terrible.
I have a Nokia box and was wondering if this happens on all other boxes as
well. What about sky digital ? Does it suffer from the same probs.
cheers
Jack
David Sim
"Jack Dalston" <ro...@robby.freeserve.co.uk> wrote in message
news:8odfml$o3b$1...@newsg4.svr.pol.co.uk...
Not noticed any problems myself, but BBC1 England on Sky Digital is
apparently of very poor quality at the moment.
D.
Martin France
>> I was watching Match of the Day on Saturday on my Toshiba 43" RP and was
>> appauled by the picture quality. When the camera was moving quickly
>> following the action the green pitch looked blurred like it had heat mist
>> over it. The sharpness of the players and other stuff was naff as well.
>> When there was closeups things were ok but on long shots it was terrible.
Oh, you mean BBC DTT quality (nothing to do with onD).
Actually, DTT is generally holding up quite well (it's still fairly
poor in absolute terms), but I didn't see that particular programme.
Is it still 16:9?
>> I have a Nokia box and was wondering if this happens on all other boxes as
>> well. What about sky digital ? Does it suffer from the same probs.
>Not noticed any problems myself, but BBC1 England on Sky Digital is
>apparently of very poor quality at the moment.
As I was about to say....
M
Jack Dalston
"Martin France" <mfr...@nomail.to.me> wrote in message
news:bcjkqs866pgndb2gn...@4ax.com...
I watched the Chelsea - Villa game on Sky round my mates house on his Nokia
Ond box and still the same blurring so its not just BBC. I think its just
digital - maybe the next generation boxes will be better.
Double Doom
> I watched the Chelsea - Villa game on Sky round my mates house on his
Nokia
> Ond box and still the same blurring so its not just BBC. I think its just
> digital - maybe the next generation boxes will be better.
>
>
I watched the Villa v Chelsea game on sky sports 1 in widescreen (SkyD) and
thought the picture quality was quite high compared to what it has been in
the past. No noticeable ghosting or pixelation.
David
Michael
> Ond box and still the same blurring so its not just BBC. I think its just
> digital - maybe the next generation boxes will be better.
Actually its down to the fact that MPEG2 compression performs particularly badly
trying to deal with the fast detailed panning shots you get when watching a good
game of footy (when my favourite team is playing it performs much better because
our defence is so static! :-)
The reason you see the grass blurring is because it is struggling to fit the picture
into the available bandwidth and has had to chuck away the detail on the grass.
The minute the camera stops panning you will see the detail on the grass begin
to fill in.
The close ups look better because there is much less detail to try and squeeze in.
Michael.
Digital-VCR, DVD and MP3 for the PC, www.showshifter.com
Martin France
>> I watched the Chelsea - Villa game on Sky round my mates house on his Nokia
>> Ond box and still the same blurring so its not just BBC. I think its just
>> digital - maybe the next generation boxes will be better.
>Actually its down to the fact that MPEG2 compression performs particularly badly
>trying to deal with the fast detailed panning shots you get when watching a good
>game of footy
This is actually mainly because of the combined use of either
constant-rate or stat-muxed MPEG-2 encoding and a low bit-rate anyway.
Variable-rate encoding at the same overall bit-rate would perform much
better in this regard. When DVB was designed, however, this
possibility appears to have been overlooked. Fortunately it is
available in DVD-Video (as if that's any consolation).
>(when my favourite team is playing it performs much better because
>our defence is so static! :-)
>The reason you see the grass blurring is because it is struggling to fit the picture
>into the available bandwidth and has had to chuck away the detail on the grass.
>The minute the camera stops panning you will see the detail on the grass begin
>to fill in.
>The close ups look better because there is much less detail to try and squeeze in.
Marty
Richard Nicholas
Martin France <mfr...@nomail.to.me> wrote:
> This is actually mainly because of the combined use of either
> constant-rate or stat-muxed MPEG-2 encoding and a low bit-rate anyway.
>
> Variable-rate encoding at the same overall bit-rate would perform much
> better in this regard. When DVB was designed, however, this
> possibility appears to have been overlooked. Fortunately it is
> available in DVD-Video (as if that's any consolation).
>
or slower when you need to. Using DVB there is a limit on the
bandwidth that can be transmitted, so you need to have a buffer and
delay the signal more. This would mean that channel switching would
be too slow. It is a compromise.
Sent via Deja.com http://www.deja.com/
Before you buy.
Martin France
>> This is actually mainly because of the combined use of either
>> constant-rate or stat-muxed MPEG-2 encoding and a low bit-rate anyway.
>> Variable-rate encoding at the same overall bit-rate would perform much
>> better in this regard. When DVB was designed, however, this
>> possibility appears to have been overlooked. Fortunately it is
>> available in DVD-Video (as if that's any consolation).
>Variable rate encoding is OK on a DVD as you can read the data faster
>or slower when you need to. Using DVB there is a limit on the
>bandwidth that can be transmitted, so you need to have a buffer and
>delay the signal more. This would mean that channel switching would
>be too slow.
I minor problem surely for much better pictures!
>It is a compromise.
A bloody awful one if the broadcasters are using 2-4mbps!
But okay if they were to use 8mbps upwards of course..
M