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#1 | Link |
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AVS Special Member
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Sharkwater 1080i?
I purchased the BD disc Sharkwater today. It says the feature is 1080p on the cover, but the PS3 plays it back as 1080/60i.
I'm certain the data must be in 1080/60i format, since all other BD discs I have play at 1080/24p except for those that are 1080i. It's encoded MPEG-2 1080/60i at about 25mbps I think. With a normal Dolby 5.1 soundtrack at 448kbps. Does anyone else have this disc, have you noticed the same thing? My "desktop" still comes up 1080/60p and all my other feature films show up as 1080/24p, so it has to be the data on this disc. I sort of feel it's false and misleading advertising, I might as well have just rented the dvd. |
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#2 | Link |
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Senior Member
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Are you using a PS3? This was the case with galapagos as well, it says 1080p but it was actually shot at 1080i and if I play it on my PS3 my tv displays it as coming out at 1080i, but if I play it on my sammy 5000 it shows as being 1080p. btw I picked up sharkwater today too, but I haven't gotten around to opening it up and trying it out yet...
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#3 | Link |
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Advanced Member
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uzun, yes... it's 1080i. The high-def video source was likely 1080i, too. Is there a "problem"? 1080i isn't any lower resolution than 1080p. Some/most standalone players convert 1080i to 1080p. (Your Samsung, Makaveli.) The PS3 doesn't. In your case, your TV does the conversion.
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#6 | Link |
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AVS Special Member
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It looks decent, it has a lot of stretched 480i footage, and a lot of it seems to have been improperly deinterlaced then reinterlaced with those errors.
It has good looking scenes, but mostly it looks pretty bad for even a normal DVD release. I would still recommend it, its an excellent doc but there are image quality issues that have been made worse by post processing associated with this disc. I just feel it should be labeled properly, the data on the disc is 1080/60i not 1080p. I sort of assumed it was 1080/24p because it had a theatrical release. So to answer grommet, yes there is a problem. The disc is mislabeled as being 1080p, its carelessly authored, and there is a lot of improper video processing associated with this title. in the case of the Galapagos Blu-Ray disc, it was also improperly labeled but in fact there was no real issue. The disc was well authored and not plagued by massive video processing errors introduced by the creators, making the material look bad. In the case of sharkwater there are a lot of scenes that are just horrible looking, much worse than they should have been even though the material was originally 480i (much of this film is clearly SD-Video, although much of it is HD as well). Last edited by uzun; 04-10-08 at 01:00 AM.. |
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#7 | Link | ||
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AVS Special Member
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Quote:
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Brandon |
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#12 | Link |
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Senior Member
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far as I know 1080i and 1080p are both 1920x1200 res. The difference being 1080i is interlaced, and 1080p is NOT. So if you have a tv that properly deinterlaces you in fact wouldn't be able to tell the difference between 1080i and 1080p.
I believe there was a fairly lengthy thread about this very subject not too long ago on here... |
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#13 | Link |
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AVS Moderator
AVS GOLD CLUB MEMBER
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The only time you might be able to complain about 1080i60 output is if the source was recorded as 1080p60 and then interlaced. But this does not happen.
larry
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#15 | Link | |
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AVS Special Member
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Galapagos is 1080i but as was mentioned several times, it's not plagued by horrendous post processing that's done to the material on sharkwater. Sharkwater is also 1080i, and parts of it look fine, but much of it looks as if it has been improperly converted to 24hz, then converted back with those frame rate conversion errors, so many scenes "stutter" and have jerky motion.
It also has a lot of "stretched" 4x3 480i material that looks horrible as well. Combine this and the inability to skip chapters, or see a timestamp while playing, and you have one shoddy BD release. 1080i is the same resolution as 1080p, but there are many benefits to shooting 1080/60p and displaying / storing it as 1080/60p, or 1080/24p. You avoid all sorts of issues associated with deinterlacing material for display on a progressive device. And all modern digital displays are not interlaced. So to blithely state 1080/60i is the same as 1080/60p on a modern 1080p display isn't accurate. For the most part you wouldn't know the difference if the material is deinterlaced correctly, but there are SO many steps along the way prone to error, it's really best to avoid interlaced altogether when possible. |
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#16 | Link | ||
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AVS Special Member
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I was going to assume that the HDD review had a typo, but Kenneth Brown goes in depth about the "1080p MPEG2" encode in Sharkwater.
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Brandon |
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#17 | Link |
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AVS Special Member
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Most documentaries and concerts are shot at 30fps.
If you want the original framerate preserved, you need to deliver it on Blu-ray on 1080i60 as Blu-ray spec does not support 1080p30 video encoding. Sharkwater may have very well been shot at 1080p30, but needed to be encoded at 1080i60 to be compatible with Blu-ray spec. Downconverting 30fps to 24fps yields ugly and unnatural motion blur, and this unfortuantely has been done for some BD concerts so they could market them as 1080p. Not only does this downconversion fail to reflect the original framerate, but it downright looks crappy in comparison to the original source framerate. So 1080i is okay, as its the only way to deliver 30fps material on Blu-ray without destroying the original framerate. Don't rag on companies for delivering 1080i otherwise we will get framerate-compromised 1080p24 versions of what were originally 30fps films/concerts. |
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#18 | Link |
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AVS Special Member
AVS CLUB MEMBER
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The HDD review has several errors. For one the Blu-ray version has exclusive feature. The
Blu-ray version is also missing a feature present on the DVD. I reviewed this title last week and mentioned it in my review.
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#19 | Link | |
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AVS Special Member
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Quote:
Brandon |
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#20 | Link | |
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AVS Special Member
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