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3D Blu-Ray and Blu-Ray discs |
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#1 |
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Forum Member
Join Date: May 2011
Location: Edinburgh / Scotland
Posts: 2,773
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3D Blu-Ray and Blu-Ray discs
Just thought i'd ask this question.
Whats the point in BD Packs that contain both 3D BD and BD discs. I was under the impression that 3D BD can be played in a BD player without problem. I did this with Mega mind 3D in my laptop. So why have the 3D and BD copy in the box ?. |
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#2 |
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Join Date: Dec 2004
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Quote:
Just thought i'd ask this question.
Whats the point in BD Packs that contain both 3D BD and BD discs. I was under the impression that 3D BD can be played in a BD player without problem. I did this with Mega mind 3D in my laptop. So why have the 3D and BD copy in the box ?. It would be pointless, unless there are some non-3D BD players out there that can't cope with 3D discs and for which no firmware updates are available. |
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#3 |
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Join Date: May 2011
Location: Edinburgh / Scotland
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Quote:
Do they actually have an extra physical disc in the pack? None of the 3D discs I've bought have, but then again I haven't bought many!
It would be pointless, unless there are some non-3D BD players out there that can't cope with 3D discs and for which no firmware updates are available. like this for instance http://www.amazon.co.uk/Transformers...7576398&sr=8-1 |
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#4 |
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Join Date: May 2011
Location: Edinburgh / Scotland
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Aw I see now lol my mistake. that'll be this thread dead them lol
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#5 |
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Join Date: Jul 2000
Location: UK
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Quote:
Do they actually have an extra physical disc in the pack? None of the 3D discs I've bought have, but then again I haven't bought many!
It would be pointless, unless there are some non-3D BD players out there that can't cope with 3D discs and for which no firmware updates are available. |
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#6 |
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Join Date: May 2011
Location: Edinburgh / Scotland
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Quote:
The Harry Potter 3D version had 3D BluRay, BluRay, DVD and bit of paper for digital copy
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#7 |
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Join Date: Feb 2008
Posts: 8,103
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Quote:
But is the 3D and BD copy on the same disc
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#8 |
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Join Date: May 2011
Location: Edinburgh / Scotland
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Quote:
Not got the set myself, but reading the description it comes with 4 discs, 3xBluray and 1xDVD. I can only take from that the 3D and Bluray are on separate discs.
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#9 |
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Join Date: Sep 2004
Posts: 14,718
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Quote:
kind of a waste then isnt it. I just assumed that the 3D n BD would be on the same disc.
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#10 |
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Join Date: Dec 2004
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Quote:
It depends what they've done. 3D has a 50% overhead compared to 2D which means that if you have a 2D only disc you can get better quality than from a 3D disc so not a waste as long as they've made use of the extra space.
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#11 |
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Join Date: Feb 2008
Posts: 8,103
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Quote:
That's a good point. But in that case, you'd think they would make a song and dance about the higher bitrate used on the 2D version.
You'd probably only know this if you visited this blu-ray's site or one of the many message boards, so not wildley known, I wonder if that's the way they prefer it, if 3D gets a bad rap and the 2D version is reported to be so much better it's no going to help with 3D sales. http://www.blu-ray.com/movies/Harry-...Blu-ray/23574/ |
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#12 |
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Inactive Member
Join Date: Aug 2011
Posts: 2,484
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3D Bluray discs are not playable on non 3D players.
And if your tv is not 3D either you'll be lucky to get to the menu. I have several 3D Bluray discs and they all have separate discs for each version. Don't confuse them with the old anaglyph system with the red and blue glasses . The remake of Journey to the Centre of the Earth is one such release with both 2D and 3D on the same disc |
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#13 |
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Join Date: Dec 2004
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Quote:
3D Bluray discs are not playable on non 3D players.
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And if your tv is not 3D either you'll be lucky to get to the menu.
No, you won't.Quote:
Don't confuse them with the old anaglyph system with the red and blue glasses . Nobody is.
The remake of Journey to the Centre of the Earth is one such release with both 2D and 3D on the same disc |
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#14 |
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Quote:
The description on blu-ray.com does comment on both transfers, calling the 3D version less than spectacular, while the 2D version gets a big thumbs by calling it magnificent.
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#15 |
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Join Date: Feb 2008
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Quote:
3D Bluray discs are not playable on non 3D players.
And if your tv is not 3D either you'll be lucky to get to the menu. I have several 3D Bluray discs and they all have separate discs for each version. ....Avatar, Resident Evil Afterlife, Cloudy with a chance of Meatballs, Piranha, Open Season, Monster House, Ice Age. It looks like discs have a single encode using AVC-MVC where the AVC decoder can decode a single 2D image and discards the rest of the data, whereas a MVC decoder will decode all views and generate a 3D video. I does look like there are various ways 3D (not the anaglyph system) are packaged - 3D/2D on the same disc, though you don't own any they do exist - 3D + 2D on separate discs, and those that clearly display they only play in 3D, though these were normally the promo discs given away with players/TV's, they were not for resale as far as I know. Quote:
Don't confuse them with the old anaglyph system with the red and blue glasses .
The remake of Journey to the Centre of the Earth is one such release with both 2D and 3D on the same disc http://www.play.com/DVD/Blu-ray/4-/1...D/Product.html |
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#16 |
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Join Date: Feb 2008
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Not quite. It's the 3D post-conversion that is described as less-than-spectacular, rather than the image quality per se. I don't think they directly compare the image quality of the 3D version in 2D mode with the 2D only version.
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#17 |
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I have the 5-disc Tron set and it has a separate Blu-ray for the 3D version of Legacy. It can only play on a 3D enabled player and tv, otherwise you get a black screen telling you that your setup doesn't support 3D.
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#18 |
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Join Date: Dec 2004
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Quote:
I have the 5-disc Tron set and it has a separate Blu-ray for the 3D version of Legacy. It can only play on a 3D enabled player and tv, otherwise you get a black screen telling you that your setup doesn't support 3D.
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#19 |
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Join Date: May 2005
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That's interesting. The Blu-ray 3D specification was designed to be backwards compatible with 2D players; the MVC codec is an extension to the AVC codec supported by all players. So they must have deliberately crippled the disc to make it behave that way.
If it's worth anything the PS3 needed a firmware upgrade to play 3D discs. |
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#20 |
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Join Date: Dec 2004
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Quote:
I think it may be down to the two ways 3D can be recorded. Side By Side is compatible with anything, two full res screens one after the other in effect an apparent doubling of the frame rate is something else.
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If it's worth anything the PS3 needed a firmware upgrade to play 3D discs.
Not really. That made the PS3 able to process 3D. It should still have been able to play 3D discs in 2D mode, even before the update.The only joker in all of this seems to be the Tron disc (and therefore presumably others) which I think must have been deliberately authored to only work in 3D mode. I would have thought that was non-compliance with the Blu-ray standard, but perhaps they get away with it by providing the 2D disc separately. |
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#21 |
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Join Date: Dec 2004
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A search for "blu-ray 3d-only" reveals that there are in fact quite a lot of these discs. It also reveals ways of overcoming the limitation!
I've seen it suggested that the reason for the separate 3D-only and 2D versions is that the 2D version can differ significantly from the one-eye view that would be derived from the 3D version. The plot thickens. |
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#22 |
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When is a 3D Blu ray disc, 3D that you can play on a 3D ready TV?
I just got a 2nd hand copy of The Final Destination and it is the old red/blue 3D rather than Side by Side 3D. |
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#23 |
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Join Date: Feb 2008
Posts: 8,103
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Quote:
A search for "blu-ray 3d-only" reveals that there are in fact quite a lot of these discs. It also reveals ways of overcoming the limitation!
I've seen it suggested that the reason for the separate 3D-only and 2D versions is that the 2D version can differ significantly from the one-eye view that would be derived from the 3D version. The plot thickens. I found mention of 'floating black bars', nothing to do with aspect ratio, but something to do with objects on the edge of the picture, someone tried to explain it by saying, hold a finger in front of you, now open and close left/right eye alternately and you will see your finger move left to right. I suppose this could affect the 2D picture because it only takes the data from one eye, the image is not centralised but shifted either to the left/right depending on what eye the data is taken from. Maybe it's these floating black bars that are appearing onscreen is why they have changed the way they package 3D movies by including the 2D version as well. I'm assuming the dual 3D cameras are positioned as our eyes are when filming, so technically the two images are not 100% identical, there will be a shift of the image either to the left/right depending on what camera you look through, it's only in the correct position when both images are together. |
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#24 |
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Forum Member
Join Date: Sep 2004
Posts: 14,718
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Quote:
I've seen it suggested that the reason for the separate 3D-only and 2D versions is that the 2D version can differ significantly from the one-eye view that would be derived from the 3D version.
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#25 |
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Forum Member
Join Date: Dec 2004
Posts: 21,646
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Quote:
I found mention of 'floating black bars', nothing to do with aspect ratio, but something to do with objects on the edge of the picture, someone tried to explain it by saying, hold a finger in front of you, now open and close left/right eye alternately and you will see your finger move left to right. I suppose this could affect the 2D picture because it only takes the data from one eye, the image is not centralised but shifted either to the left/right depending on what eye the data is taken from. Maybe it's these floating black bars that are appearing onscreen is why they have changed the way they package 3D movies by including the 2D version as well.
I'm assuming the dual 3D cameras are positioned as our eyes are when filming, so technically the two images are not 100% identical, there will be a shift of the image either to the left/right depending on what camera you look through, it's only in the correct position when both images are together. So now I'm wondering if all the films with a separate 2D version are ones where the 3D version was created in post-production. That means you get the definitive 2D version on one disc, plus the bastardised 3D-only version on a separate disc. It makes sense. Perhaps somebody less lazy than me could check... |
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