RE: [backstage] BBC News online stream quality drop?
This was my logic - if they're using 48kbps AAC, why not use AAC+ to squeeze that bit more out. It's only speech anyway so it's not like transients or harmonics really come into play that much ;) > -Original Message- > From: owner-backst...@lists.bbc.co.uk > [mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of Kieran Kunhya > Sent: 26 March 2010 00:59 > To: backstage@lists.bbc.co.uk > Subject: RE: [backstage] BBC News online stream quality drop? > > >And now the H.264/AAC workflow is > >in place... How about bumping the audio up to AAC+? > > AAC at 128kbps should be transparent provided the encoder is > up to scratch. Making it AAC+ would probably keep the audio > the same quality or perhaps reduce it slightly in my opinion > because the algorithms it uses have to guess the higher > frequencies. AAC+ is really designed for lower bitrates. - Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, please visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. Unofficial list archive: http://www.mail-archive.com/backstage@lists.bbc.co.uk/
RE: [backstage] BBC News online stream quality drop?
>And now the H.264/AAC workflow is >in place... How about bumping the audio up to AAC+? AAC at 128kbps should be transparent provided the encoder is up to scratch. Making it AAC+ would probably keep the audio the same quality or perhaps reduce it slightly in my opinion because the algorithms it uses have to guess the higher frequencies. AAC+ is really designed for lower bitrates. - Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, please visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. Unofficial list archive: http://www.mail-archive.com/backstage@lists.bbc.co.uk/
RE: [backstage] BBC News online stream quality drop?
Hurray, great news :) I did suspect that the News stream might be slightly lower to accommodate higher viewer levels but I didn't want to sound stupid suggesting it. Glad to know that it wasn't just me going crazy seeing a quality difference. Is there any chance of ever getting an HQ feed of BBC News? It'd be perfect for a toggleable player (like the F1 livestreams) And now the H.264/AAC workflow is in place... How about bumping the audio up to AAC+? I'm the worst kind of viewer ;) _ From: owner-backst...@lists.bbc.co.uk [mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of John O'Donovan Sent: 25 March 2010 18:35 To: backstage@lists.bbc.co.uk Subject: RE: [backstage] BBC News online stream quality drop? The stream has always been 368Kbps with 320K video and 48K audio. We recently upgraded all news & sport encoders to h.264 video and aac audio and one of them is had a glitch and fell back to default encoding settings rather than the optimised ones we use. Should be fixed now. Some of the other streams you see at 500K have a 128K audio stream so the video quality is not that different. The video is going up to 500K but the reason it has been lower is so that it can be served reliably to the largest possible audience. Cheers, John O'Donovan Chief Technical Architect BBC Future Media & Technology (Journalism) BC3 C1, Broadcast Centre, 201 Wood Lane, London http://news.bbc.co.uk/ http://news.bbc.co.uk/sport/ http://news.bbc.co.uk/weather/ _ From: owner-backst...@lists.bbc.co.uk [mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of Brian Butterworth Sent: 24 March 2010 12:12 To: backstage@lists.bbc.co.uk Subject: Re: [backstage] BBC News online stream quality drop? It could be because the News stream gets a lot of views on Budget day? On 24 March 2010 12:05, Christopher Woods wrote: The quality on that is the same as if you click directly via the BBC News web site. As PMQs is on now, go look at the BBC News version of the Parliament feed and then compare it with BBC Parliament's quality: http://www.bbc.co.uk/iplayer/playlive/bbc_parliament/ N24: 368kbps (48kbps). BBC Parl: 500kbps. Don't understand the drop, if it was due to a costsaving drive surely it'd be adjust to be about 300kbps or below. (Difference is currently ~132kbps) _ From: owner-backst...@lists.bbc.co.uk [mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of Brian Butterworth Sent: 24 March 2010 11:18 To: backstage@lists.bbc.co.uk Subject: Re: [backstage] BBC News online stream quality drop? There's another version of the BBC News channel at http://www.bbc.co.uk/iplayer/playlive/bbc_news24/ On 24 March 2010 11:01, Christopher Woods wrote: Noticed in the past week there's only a 384kbps stream of BBC News via the web site - it looks rubbish, jerky video and low quality audio. Better quality on TVCatchup. Does anybody know if this downgrade is permanent? - Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, please visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. Unofficial list archive: http://www.mail-archive.com/backstage@lists.bbc.co.uk/ -- Brian Butterworth follow me on twitter: http://twitter.com/briantist web: http://www.ukfree.tv - independent digital television and switchover advice, since 2002 -- Brian Butterworth follow me on twitter: http://twitter.com/briantist web: http://www.ukfree.tv - independent digital television and switchover advice, since 2002
RE: [backstage] BBC News online stream quality drop?
The stream has always been 368Kbps with 320K video and 48K audio.
We recently upgraded all news & sport encoders to h.264 video and aac
audio and one of them is had a glitch and fell back to default encoding
settings rather than the optimised ones we use. Should be fixed now.
Some of the other streams you see at 500K have a 128K audio stream so
the video quality is not that different.
The video is going up to 500K but the reason it has been lower is so
that it can be served reliably to the largest possible audience.
Cheers,
John O'Donovan
Chief Technical Architect
BBC Future Media & Technology (Journalism)
BC3 C1, Broadcast Centre, 201 Wood Lane, London
http://news.bbc.co.uk/
http://news.bbc.co.uk/sport/
http://news.bbc.co.uk/weather/
From: owner-backst...@lists.bbc.co.uk
[mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of Brian Butterworth
Sent: 24 March 2010 12:12
To: backstage@lists.bbc.co.uk
Subject: Re: [backstage] BBC News online stream quality drop?
It could be because the News stream gets a lot of views on Budget day?
On 24 March 2010 12:05, Christopher Woods
wrote:
The quality on that is the same as if you click directly via the
BBC News web site. As PMQs is on now, go look at the BBC News version of
the Parliament feed and then compare it with BBC Parliament's quality:
http://www.bbc.co.uk/iplayer/playlive/bbc_parliament/
N24: 368kbps (48kbps). BBC Parl: 500kbps. Don't understand the
drop, if it was due to a costsaving drive surely it'd be adjust to be
about 300kbps or below. (Difference is currently ~132kbps)
From: owner-backst...@lists.bbc.co.uk
[mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of Brian Butterworth
Sent: 24 March 2010 11:18
To: backstage@lists.bbc.co.uk
Subject: Re: [backstage] BBC News online stream quality
drop?
There's another version of the BBC News channel at
http://www.bbc.co.uk/iplayer/playlive/bbc_news24/
On 24 March 2010 11:01, Christopher Woods
wrote:
Noticed in the past week there's only a 384kbps
stream of BBC News via the
web site - it looks rubbish, jerky video and low
quality audio. Better
quality on TVCatchup. Does anybody know if this
downgrade is permanent?
-
Sent via the backstage.bbc.co.uk discussion
group. To unsubscribe, please visit
http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html.
Unofficial list archive:
http://www.mail-archive.com/backstage@lists.bbc.co.uk/
--
Brian Butterworth
follow me on twitter: http://twitter.com/briantist
web: http://www.ukfree.tv - independent digital
television and switchover advice, since 2002
--
Brian Butterworth
follow me on twitter: http://twitter.com/briantist
web: http://www.ukfree.tv - independent digital television and
switchover advice, since 2002
RE: [backstage] BBC News online stream quality drop?
It's been like it for a few days now... _ From: owner-backst...@lists.bbc.co.uk [mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of Brian Butterworth Sent: 24 March 2010 12:12 To: backstage@lists.bbc.co.uk Subject: Re: [backstage] BBC News online stream quality drop? It could be because the News stream gets a lot of views on Budget day? On 24 March 2010 12:05, Christopher Woods wrote: The quality on that is the same as if you click directly via the BBC News web site. As PMQs is on now, go look at the BBC News version of the Parliament feed and then compare it with BBC Parliament's quality: http://www.bbc.co.uk/iplayer/playlive/bbc_parliament/ N24: 368kbps (48kbps). BBC Parl: 500kbps. Don't understand the drop, if it was due to a costsaving drive surely it'd be adjust to be about 300kbps or below. (Difference is currently ~132kbps) _ From: owner-backst...@lists.bbc.co.uk [mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of Brian Butterworth Sent: 24 March 2010 11:18 To: backstage@lists.bbc.co.uk Subject: Re: [backstage] BBC News online stream quality drop? There's another version of the BBC News channel at http://www.bbc.co.uk/iplayer/playlive/bbc_news24/ On 24 March 2010 11:01, Christopher Woods wrote: Noticed in the past week there's only a 384kbps stream of BBC News via the web site - it looks rubbish, jerky video and low quality audio. Better quality on TVCatchup. Does anybody know if this downgrade is permanent? - Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, please visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. Unofficial list archive: http://www.mail-archive.com/backstage@lists.bbc.co.uk/ -- Brian Butterworth follow me on twitter: http://twitter.com/briantist web: http://www.ukfree.tv - independent digital television and switchover advice, since 2002 -- Brian Butterworth follow me on twitter: http://twitter.com/briantist web: http://www.ukfree.tv - independent digital television and switchover advice, since 2002
RE: [backstage] BBC News online stream quality drop?
The quality on that is the same as if you click directly via the BBC News web site. As PMQs is on now, go look at the BBC News version of the Parliament feed and then compare it with BBC Parliament's quality: http://www.bbc.co.uk/iplayer/playlive/bbc_parliament/ N24: 368kbps (48kbps). BBC Parl: 500kbps. Don't understand the drop, if it was due to a costsaving drive surely it'd be adjust to be about 300kbps or below. (Difference is currently ~132kbps) _ From: owner-backst...@lists.bbc.co.uk [mailto:owner-backst...@lists.bbc.co.uk] On Behalf Of Brian Butterworth Sent: 24 March 2010 11:18 To: backstage@lists.bbc.co.uk Subject: Re: [backstage] BBC News online stream quality drop? There's another version of the BBC News channel at http://www.bbc.co.uk/iplayer/playlive/bbc_news24/ On 24 March 2010 11:01, Christopher Woods wrote: Noticed in the past week there's only a 384kbps stream of BBC News via the web site - it looks rubbish, jerky video and low quality audio. Better quality on TVCatchup. Does anybody know if this downgrade is permanent? - Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, please visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. Unofficial list archive: http://www.mail-archive.com/backstage@lists.bbc.co.uk/ -- Brian Butterworth follow me on twitter: http://twitter.com/briantist web: http://www.ukfree.tv - independent digital television and switchover advice, since 2002
Re: [backstage] BBC News online stream quality drop?
It could be because the News stream gets a lot of views on Budget day? On 24 March 2010 12:05, Christopher Woods wrote: > The quality on that is the same as if you click directly via the BBC News > web site. As PMQs is on now, go look at the BBC News version of the > Parliament feed and then compare it with BBC Parliament's quality: > http://www.bbc.co.uk/iplayer/playlive/bbc_parliament/ > > N24: 368kbps (48kbps). BBC Parl: 500kbps. Don't understand the drop, if it > was due to a costsaving drive surely it'd be adjust to be about 300kbps or > below. (Difference is currently ~132kbps) > > -- > *From:* owner-backst...@lists.bbc.co.uk [mailto: > owner-backst...@lists.bbc.co.uk] *On Behalf Of *Brian Butterworth > *Sent:* 24 March 2010 11:18 > *To:* backstage@lists.bbc.co.uk > *Subject:* Re: [backstage] BBC News online stream quality drop? > > There's another version of the BBC News channel at > > http://www.bbc.co.uk/iplayer/playlive/bbc_news24/ > > > On 24 March 2010 11:01, Christopher Woods wrote: > >> Noticed in the past week there's only a 384kbps stream of BBC News via the >> web site - it looks rubbish, jerky video and low quality audio. Better >> quality on TVCatchup. Does anybody know if this downgrade is permanent? >> >> - >> Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, >> please visit >> http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. >> Unofficial list archive: >> http://www.mail-archive.com/backstage@lists.bbc.co.uk/ >> > > > > -- > > Brian Butterworth > > follow me on twitter: http://twitter.com/briantist > web: http://www.ukfree.tv - independent digital television and switchover > advice, since 2002 > > -- Brian Butterworth follow me on twitter: http://twitter.com/briantist web: http://www.ukfree.tv - independent digital television and switchover advice, since 2002
Re: [backstage] BBC News online stream quality drop?
There's another version of the BBC News channel at http://www.bbc.co.uk/iplayer/playlive/bbc_news24/ On 24 March 2010 11:01, Christopher Woods wrote: > Noticed in the past week there's only a 384kbps stream of BBC News via the > web site - it looks rubbish, jerky video and low quality audio. Better > quality on TVCatchup. Does anybody know if this downgrade is permanent? > > - > Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, please > visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. > Unofficial list archive: > http://www.mail-archive.com/backstage@lists.bbc.co.uk/ > -- Brian Butterworth follow me on twitter: http://twitter.com/briantist web: http://www.ukfree.tv - independent digital television and switchover advice, since 2002
