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720p vs. 1080i on a 720p TV

I don't see too much difference between DVD and HDTV when I'm sitting about 10ft away from my 61" DLP TV. So I doubt you'd see a difference between the two unless you're pixel peeping. Plus most HD boxes will scale to your TV's native resolution.

But theoretically, yes 720p is higher quality as it contains 720 lines, while 1080i only contains 540lines.
 
You'll probably not notice much of a difference. Scaling down is relatively easy.

The only way you'll notice a big difference is if there's a big bandwidth difference between the two feeds.
 
Originally posted by: virtualgames0
I don't see too much difference between DVD and HDTV when I'm sitting about 10ft away from my 61" DLP TV. So I doubt you'd see a difference between the two unless you're pixel peeping. Plus most HD boxes will scale to your TV's native resolution.

But theoretically, yes 720p is higher quality as it contains 720 lines, while 1080i only contains 540lines.
Click to expand...

Keep in mind that you are talking about 60 fields. The odd is scan first then the evens, you still get 1080 of information. Most high end TV's have line doublers or other electronics to convert interlaced signal to progressive which makes the TV a little brighter and eliminates flickering.

Overall the preference would be for 1080i since it has double the resolution of 720p and most 1080i tv's would or could convert the interlaced signal to progressive. However the 1080i would need to be downconverted to 720p to be displayed on the 720p display.

Once you throw away 1 million pixels you can't get them back no matter how good the electronics are, It sucks that they just didn't pick 1080i or 1080p as the standard and eliminate the 720p since it causes so much confusion. Besides in 10 years 720p will seem like a dumb idea cooked up when technology would eventually fix the problem of 1080p.
 
Keep in mind that you are talking about 60 fields. The odd is scan first then the evens, you still get 1080 of information. Most high end TV's have line doublers or other electronics to convert interlaced signal to progressive which makes the TV a little brighter and eliminates flickering.
Click to expand...

not really. u lose detail due to interlacing. look up the kell factor.
 
Originally posted by: Apex
You'll probably not notice much of a difference. Scaling down is relatively easy.

The only way you'll notice a big difference is if there's a big bandwidth difference between the two feeds.
Click to expand...

On my TV, 720p and 1080i are very similar, though 1080i is just a teeny bit better (HP PL5000N aka Panasonic 500U).
 
Originally posted by: virtualgames0
I don't see too much difference between DVD and HDTV when I'm sitting about 10ft away from my 61" DLP TV. So I doubt you'd see a difference between the two unless you're pixel peeping. Plus most HD boxes will scale to your TV's native resolution.

But theoretically, yes 720p is higher quality as it contains 720 lines, while 1080i only contains 540lines.
Click to expand...

No, 1080i contains 1080 lines, it's just interlaced. My TV does 1080i natively and I can tell a pretty clear difference between the two. The images are much higher resolution in 1080i.

I watch the TV all the time, and when watching a channel with a good 1080i feed like INHD, the picture is awesome.
 
Originally posted by: 91TTZ
Originally posted by: virtualgames0
I don't see too much difference between DVD and HDTV when I'm sitting about 10ft away from my 61" DLP TV. So I doubt you'd see a difference between the two unless you're pixel peeping. Plus most HD boxes will scale to your TV's native resolution.

But theoretically, yes 720p is higher quality as it contains 720 lines, while 1080i only contains 540lines.
Click to expand...

No, 1080i contains 1080 lines, it's just interlaced. My TV does 1080i natively and I can tell a pretty clear difference between the two. The images are much higher resolution in 1080i.
Click to expand...

yeah. it really depends on your equipment and such.

it's always better to stick with what works best with what you got.

 
wisetyro.com/hd

notice that the 1080i shots are still really good....jsut need to be deinterlaced.


As an example, look at the Fifth element 1080p shots. They are actually shots for a deinterlaced 1080i video🙂


In conclusion, yeah 1080i can look better, but not if your system doesn't like it
 
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