ST
I live in sight of the transmitter at Plympton, and yet when I tested the Freeview Box I got for my Sister 2 years ago it was a terrible signal, as is my terrestrial analogue feed.
Ever since I moved here I have used Sky because the signal is perfect. I suffer no distortion whatsoever, unless there are really bad storms and those are few and far between and simply require the box to be switched off for a moment.
I would suggest anyone's problems with Sky reception are purely due to either:
the standard of TV set used
the standard and/or age of the box and/or LNB
the alignment of the dish (ie standard of installation)
Since everyone, everywhere in the UK gets the same signal the differences can only be from the reception equipment.
Ever since I moved here I have used Sky because the signal is perfect. I suffer no distortion whatsoever, unless there are really bad storms and those are few and far between and simply require the box to be switched off for a moment.
I would suggest anyone's problems with Sky reception are purely due to either:
the standard of TV set used
the standard and/or age of the box and/or LNB
the alignment of the dish (ie standard of installation)
Since everyone, everywhere in the UK gets the same signal the differences can only be from the reception equipment.
CO
BBC One
Vid: 15Mbps
Aud: 256Kbps
BBC Two
Vid: 6.5Mbps
Aud: 256Kbps
ITV1
Vid: 15Mpbs
Aud: 192Kbps
Channel 4
Vid: 10Mbps
Aud: 192Kbps
five
Vid: 15Mbps
Aud: 256Kbps
It varies really depending on multiplex (and modulation I presume?). BBC channels all seem to vary between 6 - 10 Mbps other than BBC1. All Channel 4 channels are 10Mbps apart from E4+1 which is 15Mbps. All ITV channels seem to be 15 (I don’t know about news, because obviously it’s not on air on Freeview at the moment but I’m guessing its 15Mbps as well because ITV4 is).
marksi posted:
Chris, what is the reading for other channels using that software?
BBC One
Vid: 15Mbps
Aud: 256Kbps
BBC Two
Vid: 6.5Mbps
Aud: 256Kbps
ITV1
Vid: 15Mpbs
Aud: 192Kbps
Channel 4
Vid: 10Mbps
Aud: 192Kbps
five
Vid: 15Mbps
Aud: 256Kbps
It varies really depending on multiplex (and modulation I presume?). BBC channels all seem to vary between 6 - 10 Mbps other than BBC1. All Channel 4 channels are 10Mbps apart from E4+1 which is 15Mbps. All ITV channels seem to be 15 (I don’t know about news, because obviously it’s not on air on Freeview at the moment but I’m guessing its 15Mbps as well because ITV4 is).
CO
What exactly are you basing that upon? This software has no reason to be incorrect, it’s receiving the stream.
marksi posted:
There's something wrong with the software I'm afraid. BBC ONE England is (from memory) transmitted at a constant bitrate of 5.5Mbps, though is stat muxed in the Nations so can be more or less depending on what's on other channels.
What exactly are you basing that upon? This software has no reason to be incorrect, it’s receiving the stream.
MA
I've just looked it up (cos I couldn't remember) and the DVD standard has a maximum bitrate of 9.8Mbps for the video stream. 3.5-6.0 is average for BBC ONE but it depends on what's stat-muxed with it. For example, fast moving sports require a higher bitrate, whereas something like snooker would require little. The stat-mux software divides up the available bandwidth to allocate it where it's most effective.
DialUpBorg posted:
So what bitrate would be considered average, and what would be best quality?
I've just looked it up (cos I couldn't remember) and the DVD standard has a maximum bitrate of 9.8Mbps for the video stream. 3.5-6.0 is average for BBC ONE but it depends on what's stat-muxed with it. For example, fast moving sports require a higher bitrate, whereas something like snooker would require little. The stat-mux software divides up the available bandwidth to allocate it where it's most effective.
CO
From what I've read I think the actual mux modulation is going to effect quality more than having a lower bitrate anyway. QAM 16 is going to look better than QAM 64 compression.
I do however agree these numbers look very high however I don’t understand why the software would be incorrect. Possibly that’s the entire multiplexes bandwidth? But that wouldn’t make sense considering Channel 4 is on the same multiplex as ITV and supposedly lower.
I do however agree these numbers look very high however I don’t understand why the software would be incorrect. Possibly that’s the entire multiplexes bandwidth? But that wouldn’t make sense considering Channel 4 is on the same multiplex as ITV and supposedly lower.
BC
Er , sorry Chriso your software is churning out absolute b0ll0x - or telling porkies for a laff.
The figures for 2004 for ITV1 are :
4.2 Mb/s total bitrate , 3.68Mb/s vision.
There was talk of reducing the vision to 3Mb/s , but don't know what became of that . There is no way a single channel on a m/px. is going to gobble up 15Mb/s - and certainly not on ITV.
Never mind the quality feel the bandwidth ( or lack of .... )
The figures for 2004 for ITV1 are :
4.2 Mb/s total bitrate , 3.68Mb/s vision.
There was talk of reducing the vision to 3Mb/s , but don't know what became of that . There is no way a single channel on a m/px. is going to gobble up 15Mb/s - and certainly not on ITV.
Never mind the quality feel the bandwidth ( or lack of .... )