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Questions about 1080p
MaximRecoil:
--- Quote from: ahofle on January 07, 2008, 12:01:35 pm ---Interesting. I thought all source material on DVD was 480i.
--- End quote ---
The source material will either be film or video. Once it is transferred to DVD in NTSC land, it all becomes 480i. However, due to the process (telecine) that converts film to NTSC video, it can be reversed (inverse telecine), leaving only the progressive frames from the film source. So if your playback hardware or software can IVTC ("progressive scan" DVD players can do this for example), and your display can support it, then you now have 480p.
If your DVD was sourced from video, then "progressive scan" doesn't do anything. It will always be 480i because the source was natively interlaced for every frame, i.e., there is no telecining to reverse.
Typically on film-source DVD video, the telecining is done by using pulldown flags to instruct the playback device to telecine the video during real-time playback. Since this method of telecining doesn't actually encode the extra interlaced frames into the video stream, it makes it that much easier to reverse it.
ChadTower:
Keep in mind that a video mode doesn't necessarily say anything about source quality. You can have a fullblown 1080p source that looks like total ass because the source is crap - and a 480p source that looks better for the same reason. The video mode really only tells you what you might expect. The rest is all up to source quality and the quality of whatever algorithms are coming into play in the firmware of each given device in the chain.
Xiaou2:
The bigger the screen, the more you will notice the differences of resolution and
details.
I have a 1080p lcd. I use it for my PC monitor - and occasionally watch movies on
it too :)
I can tell you that by changing the res lower, you can clearly tell the differences.
Of course, it does not help that LCDs do not look good when not in their Native
resolutions.
If your watching a lower res source on a high res TV, then you will be displease at
the blocky blurry look.
shmokes:
Well . . . it's just strange, I guess. I'm under the impression that DVDs actually look better when upconverted to 1080p, while SD TV looks worse, but that SD looks worse when upconverted even to 720p. I understand that SD has further to go, even to reach 720p, but why would DVD actually benefit from the conversion while SD looks worse? Is it because an analog signal is being converted to digital before it can be upconverted, whereas a DVD is digital the whole time?
MaximRecoil:
--- Quote from: Xiaou2 on January 07, 2008, 07:01:59 pm ---The bigger the screen, the more you will notice the differences of resolution and
details.
I have a 1080p lcd. I use it for my PC monitor - and occasionally watch movies on
it too :)
I can tell you that by changing the res lower, you can clearly tell the differences.
Of course, it does not help that LCDs do not look good when not in their Native
resolutions.
If your watching a lower res source on a high res TV, then you will be displease at
the blocky blurry look.
--- End quote ---
There is no noticeable difference between 720p and 1080p on my PC monitor (Mitsubishi Diamondtron 22" CRT). In fact, I'm satisfied with a good anamorphic DVD transfer on this size monitor.
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