[backstage] Shortcomings of Ogg
Just came across this nice analysis of the shortcomings of the Ogg container format. I remember a colleague of mine swearing and cursing a few years ago when trying to parse and make sense of it :-) http://hardwarebug.org/2010/03/03/ogg-objections/ Note that this is about Ogg, NOT the vorbis audio codec. Matt -- | Matt Hammond | Research Engineer, BBC RD, Centre House, London | http://www.bbc.co.uk/rd/ - 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] Shortcomings of Ogg
On Fri, Mar 5, 2010 at 10:43, Matt Hammond matt.hamm...@rd.bbc.co.uk wrote: Just came across this nice analysis of the shortcomings of the Ogg container format. I remember a colleague of mine swearing and cursing a few years ago when trying to parse and make sense of it :-) http://hardwarebug.org/2010/03/03/ogg-objections/ Note that this is about Ogg, NOT the vorbis audio codec. I was wondering recently, actually — do Vorbis and Theora have FOURCCs registered for use in MPEG containers? And as a secondary query, do any of the common Vorbis and Theora players support playback of those streams from ISO base media? M. - 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 Web cuts - a chance to open source?
That will be the Editor in Chief, otherwise known as the DG Mark Thompson. On 4 March 2010 20:44, vijay chopra vjcho...@gmail.com wrote: Ok, I've just finished responding to the BBC strategy review consultation... around page 36 in the 70 odd page document it mentions refocussing[sic] BBC on-line, then proceeds to name a whole list of sites to close. In my responses I argued against closing down BBC web operations, but if they do get closed, what's the chance that the beeb will release the code to these; particularly things like the sportsdaq\celebdaq engine? I can think of a load of great uses for it and it's not something I've seen elsewhere. For anyone on the list who hasn't responded, here's the link: http://www.bbc.co.uk/bbctrust/our_work/strategy_review/index.shtml If you click on have your say on the proposals there's a 12 page web questionnaire. Whilst I have politics on my brain, do any of the BBC staff on the list know who's in the Beeb is responsible for political output? There's a discussion on the Pirate Party UK forum about seeing if we (I'm a member) can get a party political broadcast, we're too small to automatically qualify (you need to be contesting 1\6th of the seats), but there's nothing in electoral rules stopping broadcasters running one from us anyway. -- 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 Web cuts - a chance to open source?
Yes, ultimately he's responsible fore everything, but he must delegate operational matters. Vijay On 5 March 2010 12:20, Brian Butterworth briant...@freeview.tv wrote: That will be the Editor in Chief, otherwise known as the DG Mark Thompson. On 4 March 2010 20:44, vijay chopra vjcho...@gmail.com wrote: Ok, I've just finished responding to the BBC strategy review consultation... around page 36 in the 70 odd page document it mentions refocussing[sic] BBC on-line, then proceeds to name a whole list of sites to close. In my responses I argued against closing down BBC web operations, but if they do get closed, what's the chance that the beeb will release the code to these; particularly things like the sportsdaq\celebdaq engine? I can think of a load of great uses for it and it's not something I've seen elsewhere. For anyone on the list who hasn't responded, here's the link: http://www.bbc.co.uk/bbctrust/our_work/strategy_review/index.shtml If you click on have your say on the proposals there's a 12 page web questionnaire. Whilst I have politics on my brain, do any of the BBC staff on the list know who's in the Beeb is responsible for political output? There's a discussion on the Pirate Party UK forum about seeing if we (I'm a member) can get a party political broadcast, we're too small to automatically qualify (you need to be contesting 1\6th of the seats), but there's nothing in electoral rules stopping broadcasters running one from us anyway. -- 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 Web cuts - a chance to open source?
http://www.bbc.co.uk/bbctrust/assets/files/pdf/about/how_we_govern/charter.pdf 40(3) The Director General shall also be the editor-in-chief of the BBC. As such, he shall be accountable for the BBC’s editorial and creative output. On 5 March 2010 12:55, vijay chopra vjcho...@gmail.com wrote: Yes, ultimately he's responsible fore everything, but he must delegate operational matters. Vijay On 5 March 2010 12:20, Brian Butterworth briant...@freeview.tv wrote: That will be the Editor in Chief, otherwise known as the DG Mark Thompson. On 4 March 2010 20:44, vijay chopra vjcho...@gmail.com wrote: Ok, I've just finished responding to the BBC strategy review consultation... around page 36 in the 70 odd page document it mentions refocussing[sic] BBC on-line, then proceeds to name a whole list of sites to close. In my responses I argued against closing down BBC web operations, but if they do get closed, what's the chance that the beeb will release the code to these; particularly things like the sportsdaq\celebdaq engine? I can think of a load of great uses for it and it's not something I've seen elsewhere. For anyone on the list who hasn't responded, here's the link: http://www.bbc.co.uk/bbctrust/our_work/strategy_review/index.shtml If you click on have your say on the proposals there's a 12 page web questionnaire. Whilst I have politics on my brain, do any of the BBC staff on the list know who's in the Beeb is responsible for political output? There's a discussion on the Pirate Party UK forum about seeing if we (I'm a member) can get a party political broadcast, we're too small to automatically qualify (you need to be contesting 1\6th of the seats), but there's nothing in electoral rules stopping broadcasters running one from us anyway. -- 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] RE: BBC Flash video and deinterlacing - is this really the best we can get?
Don't TV Catchup have both a low- and high- quality streams, where the HQ ones are interlaced? On 28 February 2010 21:27, Christopher Woods chris...@infinitus.co.ukwrote: Watching the CA v. US icehockey final, I noticed - once again - that the BBC Sports online stream, at [1], is horribly deinterlaced. Image sample: [2]. However, TVCatchup's BBC2 stream, at [3], which sources from Freeview, looks fine. How come TVC can do a better job at progressive video than the Beeb can? ;) With the impending F1 season almost upon us, I'd hate to see the same problems with blended deinterlaced footage as was frequently visible on the BBC streams last year. (and I don't want to have to use TVCatchup again.) It's bad enough with the fairly linear movement in motorsports, but with sports like ice hockey you can't even track the players, let alone the puck. [1] http://news.bbc.co.uk/sport1/hi/olympic_games/vancouver_2010/live_coverage/d efault.stm [2] http://imgur.com/6pZG9.png [3] http://www.tvcatchup.com/watch.html?c=2 -Original Message- From: Christopher Woods [mailto:chris...@infinitus.co.uk] Sent: 09 February 2010 00:52 To: 'backstage@lists.bbc.co.uk' Subject: BBC Flash video and deinterlacing - is this really the best we can get? I've noticed that for some reason blend deinterlacing is still being used on all BBC Video footage (iPlayer, inline footage on News/Sports sites, etc). It looks naff, causes image doubling in areas of high movement and makes scrolling credits harder to read. (Also don't think it looks as good and halves the perceived framerate) As reference, the doubling is very noticeable on a recent episode of Hustle in the 'action areas': http://i46.tinypic.com/14jxctd.png (a deck of cards is being fountained upwards, falling down onto the camera - note the overlapping ghosts of the moving cards). I first wondered if this was a limitation of how Flash renders interlaced-encoded video, but I happened to be watching a particular sporting event via an unofficial Justin.tv stream and the motion was fluid and crisp. From that I can only assume all BBC videos are encoded as progressive, and as such the Blend deinterlacing is burnt in, with the same going for Live streams... If the content is being deinterlaced from a broadcast source, why not use Bob or Weave? Blend just looks awful, motorsports/action looks dire and even regular stuff looks pants. So, in the absence of any known point of contact for the bods in charge of digitisation across the BBC's online platforms, can someone advise me as to whom I should be addressing my angry letters and suggestions for improvement? ;) - 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
[backstage] BBC Strategy Review - HD TV???
Am I going mad here? I looked at the *BBC Strategy Review* document from the BBC's DG in the hope of finding out when all BBC output would go HD. Page 13 mentions Freeview HD in passing, page 24 says high definition television is growing, page 48 mentions DVB-T2's ability to deliver HD, page 61 mentions Freeview HD again in passing. And that's it. Or have I missed something? It seems very strange to have a document that says two radio stations should close without mentioning the BBC HD channel, or the BBC One HD/BBC TWO HD proposals. -- 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 Strategy Review - HD TV???
On 5-Mar-2010, at 22:04, Brian Butterworth wrote: Am I going mad here? I looked at the BBC Strategy Review document from the BBC's DG in the hope of finding out when all BBC output would go HD. You’re not going mad. A cynic might be forgiven for believing it’s perfectly congruous with the aspects of the BBC’s high definition strategy which are concrete enough to put into words in a consultation document. Mind you, compare what we know about the BBC’s high definition with what we know about the HD strategies of broadcasters who aren’t compelled to consult on various aspects of their operation. M. (who is currently part-way through writing a comprehensive response to the on-demand consultation. fun fun fun). - 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] RE: BBC Flash video and deinterlacing - is this really the best we can get?
Don't TV Catchup have both a low- and high- quality streams, where the HQ ones are interlaced? Not aware of multiple streams - only ever watch at the highest possible quality :) However, it certainly doesn't look like it's been encoded as interlaced (which would make absolutely NO sense whatsoever).
