[chadsdsmith]

And I am talking about on a 1080p tv that deinterlaces correctly. I am not talking about in 24 frames per second mode. I have been sending 1080i through a hdmi splitter(one of my tvs is only 768p so I cannot send 1080p), but when I switched to 1080p, the image is identical on my 54"g10 panasonic. It makes me wonder why people say to avoid certain imports etc. that are in dreaded 1080i.... Maybe these discs look bad, but I doubt it has anything to do with 1080i. Can anyone say for certain that, if presented with two identical model 1080p tvs, they could tell which one was being fed a 1080i source vs the same movie at 1080p? I would like to hear about how bad my eyesight really is

or maybe

 

[dssturbo1]

with proper deintelacing it should look the same.

 

[chadsdsmith]



Quote:
Originally Posted by dssturbo1 /forum/post/16833378


with proper deintelacing it should look the same.

Ya. It seems my g10 panny does a pretty good job deinterlacing. It must do a pretty good job with 3:2 pulldown, as I can barely tell the difference when switching to 24 frames/second. Then again, its hard to see the difference when its flickering like crazy

(that 48hz thing makes you wonder what they were thinking.. movie projectoresque my arse!!) Do you see the difference when viewing at 1080p 24fps vs 1080i/p at 60fps? It seems like that with tvs nowadays, manufacturers have to have some new thing that is going to make people get rid of last years model.lol

 

[John Mason]

Supposedly you could use resolution test patterns on Blue-ray test discs or 'hidden' resolution-wedge patterns on Sony Blu-ray movie discs to compare 1080i and 1080p. That should provide numerical comparisons that might differ from approximate judgments of overall PQ. Using this method, I recently measured a difference between component vs HDMI inputs that wasn't readily noticeable using only motion-video 1080i HDTV. Some test-disc patterns tailored for 24p testing should be useful, too; someone in the calibration forum might have suggestions. -- John

 

[optivity]

 1080i vs 1080p - Similarities and Differences Between 1080i and 1080p


"1080p processing can be done at the source, such as on a Upscaling DVD Player, Blu-ray Disc Player, or HD-DVD player - or it can be done by the HDTV itself.


Depending on the actual video processors used, there may or may not be a difference in having the TV do the final processing (referred to as deinterlacing) step of converting 1080i to 1080p.


For instance, if the TV is utilizing a Faroudja Genesis, DVDO, Silicon Optix HQV, or homegrown processors, such as the ones used in higher-end Sony, Pioneer, Hitachi, and Panasonic sets for example, may be equal to the processors used in many source components - so the results displayed on screen should be equivalent, or very close. Any differences would be more noticable on larger screen sizes.

The key is in the processing, and, of course, not all HDTVs and video processors are created equal - let your eyes be your guide."

 

[sodaboy581]



Quote:
Originally Posted by chadsdsmith /forum/post/16833137


And I am talking about on a 1080p tv that deinterlaces correctly. I am not talking about in 24 frames per second mode. I have been sending 1080i through a hdmi splitter(one of my tvs is only 768p so I cannot send 1080p), but when I switched to 1080p, the image is identical on my 54"g10 panasonic. It makes me wonder why people say to avoid certain imports etc. that are in dreaded 1080i.... Maybe these discs look bad, but I doubt it has anything to do with 1080i. Can anyone say for certain that, if presented with two identical model 1080p tvs, they could tell which one was being fed a 1080i source vs the same movie at 1080p? I would like to hear about how bad my eyesight really is

or maybe

You should be able to tell a difference, I'm pretty sure.


For example, if you had a game console set to output at 1080i as opposed to 1080p and had a fast moving game. Or maybe even a PC game at 1080i as opposed to 1080p running at 60fps, you should definitely be able to tell the difference in detail.


540 lines of resolution per frame as opposed to 1080 lines of resolution per frame will be noticeable. Maybe not so much on movies, but definitely things with finer details or faster motion like games or maybe even sports.

 

[chadsdsmith]



Quote:
Originally Posted by sodaboy581 /forum/post/16836511


You should be able to tell a difference, I'm pretty sure.


For example, if you had a game console set to output at 1080i as opposed to 1080p and had a fast moving game. Or maybe even a PC game at 1080i as opposed to 1080p running at 60fps, you should definitely be able to tell the difference in detail.


540 lines of resolution per frame as opposed to 1080 lines of resolution per frame will be noticeable. Maybe not so much on movies, but definitely things with finer details or faster motion like games or maybe even sports.

I don't think you are missing out on any resolution on a 1080p tv, as a properly deinterlaced image has 1080 lines of resolution. I could be mistaken. It would be interesting to see a blind test of this. My guess is that anyone who picks the 1080p source will be right because of luck, not because they could actually tell a difference. 24 frames/second might be a different story, though even that seems hard to distinguish except in panning shots.


btw. Is it possible to send a 1080i signal at 24 frames/second? just curious, though I don't think any displays could benefit.