Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 | 3 
dasimpsonsrule
95 posts

Master Geek


  #344317 22-Jun-2010 21:35
Send private message

Does the fact that tv1 is running at 50fps make a difference? I notice only some shows are in 50fps, and I havn't watched the football live.

Nil Einne
451 posts

Ultimate Geek


  #345306 25-Jun-2010 17:43
Send private message

I think your wrong... Badly wrong,..

Last time I checked this (to put another conspiracy theory in its place), the following situation existed:

DVB-T vs Sky Rebroadcast of TVNZ

Identical Resolution, as near to identical bitrates as you could see, without putting the signal through some sort of time base correcter, to compare exactly.  ie there was no perceivable difference, and no difference in the actual signal.  It looked every bit like a straight signal pass thru...

DVB-T (TVNZ or TV3) vs Sky HD.

Sky run the same resolution as TV3 (1920x1080i), but usually at higher bitrates.  With domestic sport, this commonly averages 18-21Mbit.  This is well over the average you see on TV3.  Generally on like for like equipment ie same TV, same cable, same graphics card, Sky looks the best of any NZ domestic broadcast.

But dont let the facts get in the way of another pointless bash on Sky will you...


Are all the Sky HD channels the same then? Just wondering because if Lyngsat is correct their 12358 mux has SS2, SMG and the 3 FTA ones while 12331 has SS1 and SM. I don't know much about DVB-S2 (or DVB-S) but I'm guessing the bandwidth of each mux is usually the same if it has the same parameters and is part of the same beam. I presume they aren's using all the capacity of 12331 but I was wondering if they dedicated more to those because they considered them more important.

BTW in terms of the 720p vs 1080i issue dasimpsonsrule mentioned, some people do prefer 720p for sports particularly high motion ones (clearly the quality of your deinterlacing will also make a difference). Football isn't generally thought of as an extremely high motion sport AFAIK (a few things like shots on goal maybe) so 1080i may be mostly better. Of course if you do a lot of manual slow motion replays you're probably more likely to notice any advantage with 720p.

Many broadcasters do use 720p for sports at least in the US I believe, I'm a bit surprised to find out Sky use 1080i since it's easy for them to use 1080i for SM and 720p for SS whereas the FTA/general ones have to choose one or the other for all their content.

Mind you, this is something which I've never seen researched well, e.g. double blind/ABXed. It seems something you could do if you have a 1080p50 or p60 source. Convert it (with high quality filters) to 1080i and 720p and then compare them at standard viewing distances in an ABX or similar fashion. Lots of people saying I can tell or I can't tell without any real details on the source, how it was tested etc.

Of course in any case Sky's bandwidth advantage may be a bigger factor then anything else making the 720p vs 1080i a moot point.


1 | 2 | 3 
View this topic in a long page with up to 500 replies per page Create new topic





News »

Huawei launches IdeaHub Pro in New Zealand
Posted 27-Oct-2020 16:41


Southland-based IT specialist providing virtual services worldwide
Posted 27-Oct-2020 15:55


NASA discovers water on sunlit surface of Moon
Posted 27-Oct-2020 08:30


Huawei introduces new features to Petal Search, Maps and Docs
Posted 26-Oct-2020 18:05


Nokia selected by NASA to build first ever cellular network on the Moon
Posted 21-Oct-2020 08:34


Nanoleaf enhances lighting line with launch of Triangles and Mini Triangles
Posted 17-Oct-2020 20:18


Synology unveils DS16211+
Posted 17-Oct-2020 20:12


Ingram Micro introduces FootfallCam to New Zealand channel
Posted 17-Oct-2020 20:06


Dropbox adopts Virtual First working policy
Posted 17-Oct-2020 19:47


OPPO announces Reno4 Series 5G line-up in NZ
Posted 16-Oct-2020 08:52


Microsoft Highway to a Hundred expands to Asia Pacific
Posted 14-Oct-2020 09:34


Spark turns on 5G in Auckland
Posted 14-Oct-2020 09:29


AMD Launches AMD Ryzen 5000 Series Desktop Processors
Posted 9-Oct-2020 10:13


Teletrac Navman launches integrated multi-camera solution for transport and logistics industry
Posted 8-Oct-2020 10:57


Farmside hits 10,000 RBI customers
Posted 7-Oct-2020 15:32









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.