Talk:High-definition television/Archive 2

message: I created an archive of older discussions. I also split some sections (pre-recorded media and compression) of HDTV into separate wikis, as the main page was getting too long (>40 KB).Thewikipedian 18:44, 20 June 2006 (UTC)
thread_title:  previous talk archived 

message: I think this article could do with some discussion about what bitrates and bandwidth are generally used for HD broadcasts and storage on media - I couldn't find anything significant on the subject anyway. Or is it discussed in other articles? --Zilog Jones 15:52, 9 August 2006 (UTC)
thread_title:  Bitrate 

message: There seems to be a little confusion about PAL and NTSC resolutions; I think that section could probably do with a little clarification, especially as there appear to be several NTSC and PAL resolutions. (See ]) TimTim 19:47, 3 September 2006 (UTC)
replies: text: There is a lot of confused and incomplete information on that page.  What they call the "Preferred Format" is almost unknown in real usage.  The "D-1 NTSC Square Pix" lists a resolution that would never happen in NTSC -  the only time you would ever use 720 x 540 is for images that originate on a computer that can't handle rectangular pixels, and you want to match the D1 horizontal resolution.  Then it wouldn't matter if you were going to NTSC, or PAL. Algr 18:50, 12 September 2006 (UTC)
thread_title:  PAL resolution 

message: The contemporary systems sections has been merged with List of digital television deployments by country. High-definition television in Europe will be merged with Digital television in Europe, but it still needs some cleanup, as HDTV and digital SDTV are really messed up Thewikipedian 10:58, 15 September 2006 (UTC)
thread_title: Contemporary systems

message: I don't really see how point #1 can be considered an advantage. Things like pixellation (which I see all the time on digital cable) and still pictures is in many respects worse than snowy or lined images. I suggest moving this point elsewhere in the article as it kinda shoots the topic in the foot where it is now. 23skidoo 19:50, 19 September 2006 (UTC)
thread_title: Advantages in non-engineering terms

message: If you have a 720p screen, will video recorded as 1080i still appear the same as on a 1080i screen? (Besides interlacing and progressive things... I mean the actual picture quality. Regardless of the correct answer, this should be metioned in the article. aido2002 20:31, 26 September 2006 (UTC)
thread_title:  720p and 1080i 

message: Just a nice converstaiton about HDTV usage by Wikipedia members.  I have good news and bad news.
Good: I have HDTV.
Bad: I only have 720P.--BigMac1212 16:54, 19 October 2006 (UTC)
thread_title:  Who here has HDTV? 

message: There are two errors in the aforementioned table in the column DVB-T! 
In the row outer interleaver: according to the DVB-T standard a convolutional interleaver (interleaver depth I=12, number of shift registers M=17 and register depth j=one symbol or one byte) is used for outer interleaving, not a block interlever.
In the row inner interleaver: inner interleaver consists of two levels: bitwise interleaver in the first level and symbolinterleaver in the second. So there are no use of any frequency functions or so on. nmo83.135.4.183 16:28, 6 November 2006 (UTC)
replies: text: Actually, the inner symbol interleaver operates on the symbols carried by data carriers, thus it is a frequency interleaver. --Cantalamessa 13:15, 13 November 2006 (UTC)
thread_title:  Error in the Table of terrestrial HDTV transmission systems 

message: I'm looking for an HD solution to tide me over while the DVD format wars are fought.
Perhaps this article could comment on which current HD format looks best when watching non-HD DVDs?
Thanks!
Well I have an HD set that does 720p and upconverts (or something) to 1080i.  DVD movies in general look just mediocre.  DVDs that are "enhanced for HD TVs" look a bit better, and usually are in 16:9 format. But when comparing a DVD movie to an HD channel that happens to be showing the same movie, the difference is very clear.  For example I had watched most of Gus's "Last Days" movie in HD on HBO, but missed part of it, so I decided to rent it a few days later.  When I finally got around to watching it, by chance HBO HD was showing it again, so I switched back and forth between the two, and although the DVD was "enhanced for HD TVs," the quailty was much better on the HBO broadcast.  So I guess my answer is, if you don't have an HD set, and aren't ready to jump on the Blu-ray or HD DVD bandwagon yet, don't worry, because the quality of a DVD on an HD set isn't as great as some might think.24.22.56.137 04:19, 6 December 2006 (UTC)
thread_title:  Non-HD DVD 

message: There are a couple of botched rvs on this page because I got confused about what user added what and removed what. Please disregard and excuse my foolishness. — David Spalding Talk/Contribs 15:31, 3 December 2006 (UTC)
thread_title:  [[WP:EL|Linkspam]] reversions 

message: Two questions:
First, I have a friend who claims that personal computers have been displaying "HD quality" for 10 plus years now.  But I don't think he's correct on that one.  He refers to the resolution 1280x720, and says that since computers have been able to support this resolution for years, that proves that they have been able to display HD for years now.  That's really his only talking point, and when I bring up 720p or 1080i, that's when the conversation gets confusing, mostly cause both of us have limited knowledge about how you can compare a TVs resolution and/or encoding.
Secondly, since certain companies are now selling "HD" computer monitors (Apple comes to mind), what does that exactly mean?  Of course my friend the computer guy would say it's just a gimick, since computers have been able to do HD for years...  So what is the difference between a normal LCD computer monitor compared to an "HD" model?24.22.56.137 04:06, 6 December 2006 (UTC)
replies: text: HDTV is a television resolution and standard, not computer video. HD monitors are simply capable of showing HDTV, so far's I know. E.g. HDMI input, etc. HTH. — David Spalding ta!k y@wp/Contribs 13:19, 6 December 2006 (UTC)
replies: text: It's true that some computer resolutions can show HDTV in native resolution. However, as these often have a different frame rate from the standard being displayed, the images end up being interpolated to match, and image quality suffers, particularly with motion (watch the credits roll on a TV show; they can be illegible if the frame rate doesn't match). This is an issue watching DVDs on a computer as well.  ProhibitOnions  (T) 14:48, 6 December 2006 (UTC)

text: If you go by the numbers, then SXGA is certainly "HD", and XGA might just barely make it over the bar.  However the "TV" part of HDTV is another story, since it has only been recently that you had PCs that could actually keep live action video (as opposed to videogame) images moving at HD resolution.  My Mac G4 can do it, but only with HDV, not with the H264 formats that people are actually putting on the web.  Apple seems to be defining "HD" as meaning "at least 1920x1080 resolution", which is far more strict then the TV industry is defining it.  I've seem some "HD" sets where you couldn't distinguish 480p from 1080i.  Algr 07:59, 7 December 2006 (UTC)
thread_title:  HD on a Personal Computer 

message: I think this page needs a source for the 10% penetration number given in the article intro. Theflyingorc 21:05, 6 December 2006 (UTC)
replies: text: I was thinking the same thing - we should remove it until sourced per WP:V/WP:NOR. Leuko 02:22, 7 December 2006 (UTC)
thread_title: Source?

message: Enough about the science! What about a simple history charting its invention and proliferation?  its early introduction?  what was the first show ever broadcast in (what's currently known as) hdtv?  early reluctance to buy the sets?  the requirement to buy those stupid hdtv receiver boxes?  which started broadcasting hdtv first: nbc or abc?  when the switch was or wasn't made from 720 to 1080?  i don't know any of these answers.  Youdontsmellbad 20:08, 9 February 2007 (UTC)
thread_title:  History of HDTV