tag:blogger.com,1999:blog-3993498847203183398.post6181163818396215654..comments2024-03-28T09:19:27.451+00:00Comments on RevK<sup>®</sup>'s ramblings: Red facesRevKhttp://www.blogger.com/profile/12369263214193333422noreply@blogger.comBlogger15125tag:blogger.com,1999:blog-3993498847203183398.post-48990514635726521342015-07-05T17:14:23.819+01:002015-07-05T17:14:23.819+01:00Hello. Not that I understood all of what you said ...Hello. Not that I understood all of what you said but what I got was televisions over scan thereby creating red faces. So does that mean my NCIS collection of dvds is not faulty but my crappy Korean military exchange television is ruining my viewing experience? Cuz that would make sense. SaraAnnhttps://www.blogger.com/profile/17985685189319062939noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-9253904289185969612014-04-22T20:04:14.128+01:002014-04-22T20:04:14.128+01:00Sure, but the lossy compression at least tries to ...Sure, but the lossy compression at least tries to keep it *looking* the same as before.Jonathanhttps://www.blogger.com/profile/04753744153864691285noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-30406118195998872922014-04-22T16:08:51.283+01:002014-04-22T16:08:51.283+01:00Surely your TV picture has been stuffed through so...Surely your TV picture has been stuffed through some lossy compression anyway, hasn't it? So the hope that's you're seeing the same pixels the director/editor intended is vain...Will Deanhttps://www.blogger.com/profile/15515078919433985452noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-77599440441979939732014-04-22T13:24:32.903+01:002014-04-22T13:24:32.903+01:00Just trying watching Coronation Street on ITV HD, ...Just trying watching Coronation Street on ITV HD, it's probably the worst colour treatment possible.<br />Lots of banding, obvious gamma compression / shifting.<br />When it should be straight BT.709. Suspect they want to make it look good/natural on over saturated display in local Tesco. Obviously not on a properly calibrated display.Brexit factshttps://www.blogger.com/profile/09499046210014193575noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-6290095281428942942014-04-22T11:24:13.120+01:002014-04-22T11:24:13.120+01:00Well, dynamic range compression is sometimes usefu...Well, dynamic range compression is sometimes useful, although not always desirable. For example, when watching something late at night at low volume (so as not to wake the rest of the household), lots of dynamic range is a problem since you can't hear the quiet bits.<br /><br />Ideally they would transmit both the compressed and uncompressed soundtracks so you could choose yourself.Steve Hillhttps://www.blogger.com/profile/09798286430189689578noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-64819590858789382552014-04-21T18:35:54.209+01:002014-04-21T18:35:54.209+01:00This comment has been removed by the author.Jonathanhttps://www.blogger.com/profile/04753744153864691285noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-52113557095852522202014-04-21T18:35:50.306+01:002014-04-21T18:35:50.306+01:00It Gets Worse.
I have a computer monitor which is...It Gets Worse.<br /><br />I have a computer monitor which is apparently a repurposed LCDTV design. With a 16:10 aspect ratio, that's already a little weird - broadcast content is either in 4:3 or 16:9, or letterboxed from one of those formats to whatever the source material is.<br /><br />The stupidest thing, however, is that if I turn off overscan yet connect it to an Nvidia graphics card over HDMI (the only digital input), it leaves a black border around the edge corresponding to the area that would have been hidden with overscan - in which such minor things as menu bars, scrollbars and taskbars tend to be found. There is a workaround, but it is so tedious to apply (since it has to be *re*applied every time I reinstall or upgrade the drivers) that I simply exile all of my Nvidia hardware away from it.Jonathanhttps://www.blogger.com/profile/04753744153864691285noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-28513947028886750092014-04-21T17:32:48.914+01:002014-04-21T17:32:48.914+01:00I'm told the defaults are horrendous for a rea...I'm told the defaults are horrendous for a reason - they look good on a shop floor. Hence 'dynamic' is default (all the colours look oversaturated and unnattural) and overscan makes the picture look bigger.<br /><br />The first thing I do on encountering a new TV is set it to natural colours and switch the overscan off :pTony Hoylehttps://www.blogger.com/profile/06485210895681350152noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-32192629864232162802014-04-21T10:23:08.520+01:002014-04-21T10:23:08.520+01:00Most TVs have a setting to disable overscan for HD...Most TVs have a setting to disable overscan for HD sources. The mystery is why this isn't the default, and why you'd ever want to set it to anything else?Owen Smithhttps://www.blogger.com/profile/00890951742186614705noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-32825343757600485492014-04-21T10:18:53.060+01:002014-04-21T10:18:53.060+01:00Don't forget colour space issues; there are th...Don't forget colour space issues; there are three that matter here:<br /><br />Old NTSC. Thiend.s a standard that was based around phosphors available easily in the late 40s, and has trouble with red; many US sets are adjusted to make this material look good, as broadcasters didn't move away from it until the 1980s.<br /><br />BT.601. This is the standard SD colour space based on PAL/SECAM phosphors and used by virtually all non-US broadcasters for SD.<br /><br />BT.709. This is the HD colour space, and differs from BT.601 slightly, so that it's easier to generate with modern phosphors or LCD screens.<br /><br />I suspect you're watching in BT.709, but the broadcast was originated in old NTSC and treated as BT.601 by the UK endSimon Farnsworthhttps://www.blogger.com/profile/15190608047563530091noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-8450082371604708652014-04-20T22:07:13.991+01:002014-04-20T22:07:13.991+01:00A lot of TV stations in the USA mess with the soun...A lot of TV stations in the USA mess with the sound too. They do some sort of compression / volume normalisation. If you have a quiet scene in a TV show they slam the volume right up so something as quiet as a pin dropping is as loud as when someone speaks a few seconds later.<br /><br />Infuriating.1https://www.blogger.com/profile/04266030296611845502noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-22249278351987265602014-04-20T19:28:36.138+01:002014-04-20T19:28:36.138+01:00Watching TV is rare these days, and was a brief ba...Watching TV is rare these days, and was a brief background task while coding, as I have been since 7am...RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-56027287356701609772014-04-20T19:27:30.134+01:002014-04-20T19:27:30.134+01:00This comment has been removed by the author.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-34492557052441756152014-04-20T18:45:24.160+01:002014-04-20T18:45:24.160+01:00I don't have a basement!I don't have a basement!RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-77347600483604479452014-04-20T18:42:40.648+01:002014-04-20T18:42:40.648+01:00Go build a boat instead...Go build a boat instead...SimonFhttps://www.blogger.com/profile/03711861360301638111noreply@blogger.com