billy2
join:2009-02-27
Staten Island, NY
| reply to billy2
Re: [TWC] ABC HD looks bad for NBA Playoffs
why is it said that Sports belongsin 720 HD and not 1080 ? Wouldnt 1080 be a better Picture and I thought the reason why ABC HD was what it was because its 720 . Is it also that its like a simulcast of ESPN on ABC, which causes bandwith, on ABC it uses ESPN Graphics and ABC , and commentatrs uses ESPN Mics. which makes no sense, its on ABC, use ABC graphics, they are the same company owned by Disney , ESPN doesnt own ABC |
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hobgoblin
Sortof Agoblin
Premium
join:2001-11-25
Orchard Park, NY
clubs:
| Here is the best answer I could cut and paste so I did not have to type it
To answer the question, it's important to understand the difference between 720p
vs 1080i. A 720p signal is made up of 720 horizontal lines. Each frame is displayed
in its entirety on-screen for 1/30th of a second. This is know as progressive scan
(hence the 'p')The quality is like watching 30 photographic images a second on TV.
A 1080i signal comprises 1080 horizontal lines but all the lines are not displayed
on-screen simultaneously. Instead, they are interlaced (hence the 'i'), ie every other
lines is displayed for 1/60th of a second and then the alternate lines are displayed
for 1/60th of a second. So, the frame rate is still 30 frames per second, but each
frame is split into two fields, which your brain then puts together subconsciously.
Most of the time interlacing works fine, but for fast moving images, such as sports
like baseball and hockey it can cause problems which manifest themselves as a
'stepping' effect on-screen. Progressive scan signals don't have this problem and so
are better suited to sports.
ESPN puts it like this: 'Progressive scan technology produces better images for the
fast moving orientation of sports television. Simply put, with 104 mph fastballs in
baseball and 120 mph shots on goal in hockey, the line-by-line basis of progressive
scan technology better captures the inherent fast action of sports. For ESPN,
progressive scan technology makes perfect sense.'
»ezinearticles.com/?720p-Vs-1080i···id=91443
Hob
--
"A foolish consistency is the hobgoblin of little minds."
- Ralph Waldo Emerson
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billy2
join:2009-02-27
Staten Island, NY | Thanks Hob |
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