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.uk>wrote: > 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
