The Gang of Five
Beyond the Mysterious Beyond => The Fridge => Topic started by: landbeforetimelover on October 22, 2007, 05:46:31 AM
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I just bought a LBT dvd from a garage sale, and I noticed that it had 2 LBT films on it. I just figured that they came out with a new type of disk, but when I popped it in, it was a total of 6.33gb and had 2 full sequals on it! How is this possible? LBT 5 takes up 7.6gb alone on it's dvd, and I notice no quality reduction on this dvd. How did they fit it into such a small amount of space? Did they come out with a new type of video encoding that I'm unaware of? I try to keep up to date on all the newest video formats. :huh:
(http://i203.photobucket.com/albums/aa146/tlordame/how.jpg)
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Dual layer dvds can go up to 9gb....compress compress compress and you can fit a lot onto one dvd. As long as its in the MPEG-2 standard, it will play.
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It's in a rather large VOB format, as is the LBT 5 dvd. They are in exactly the same format. Perhaps a new filing system for the disk? There is no evidence of compression.
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.vob is the dvd standard...a new video can start in the middle of a vob file and the reason a computer or dvd player knows where to find it is due to other parts of the dvd structure. That doesn't determine what's on the dvd or how much is on there because you can change the bitrate of the MPEG-2 file. (you can rename a .vob file to .mpeg and it will play but you lose the ability to turn subtitles on/off, skip chapters, etc.)
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When I open the vob file into my video conversion program, it gives all the technical info such as audio and video bitrate and quality level along with the format (Pal or whatever that other ones called). It is exactly the same with the LBT 5 dvd and the newer one with 2 of them on there. I don't see how they could be compressed. Wouldn't compression reduce quality as well as make the disk harder to read? Also, why would it have the same information if they are compressed? I have nothing that will tell me the disk's format, but I think it must be different if the two disks both have the same information but one of them takes up less space. Like the filing systems of computers. First it was FAT16(fat), FAT32, and then it was NTFS. Obviously, FAT32 and NTFS can store more data more efficiently than that regular FAT filing system. That's what I suspect from the newer disk. I must research this. Perhaps I could look up the disk's manufacturer to see what sort of disk it is. I'd like to acquire some blank ones and a burner if possible. :D
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Well, this certainly proves my theory and all of the articles saying that the double features have one disc. :D
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I was thinking of getting some of these double feature, how do they look? Do they have the extras the other single movie ones have, scene access, and so on?
Though I know little about such things I'd guess, like someone earlier mentioned, maybe their double layer. Also if there is any loss in video quality, and maybe there is none, maybe it's something you can not see on a regular tv. I've read someone that a regular dvd can display a picture quality a bit better then what most tv's can display. Forgot the numbers, something like for example modern tv's can display 450 and dvd's 700. Forgot the exact numbers and what they mean, so maybe these dvd's can do 600 or 550 instead of 700 for example.
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I made a similar thread for your exact same question. Look here (http://www.gangoffive.net/index.php?topic=1792) to see what came of it.
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It has all special features and extras, but it will only play in full format (no widescreen). Since I have a wide screen monitor, I just use VLC media player to adjust the aspect ratio. :D
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Austin, no dvd can hold more than 4.7gb of data on a single layer; dual layers will give you more space of course. The thing is for a dvd to play if needs to have a certain file structure (VIDEO_TS is the big one) and appropriate files inside that folder. You can't tell what's there or how its compressed just by looking at them. The maximum one .vob file can be is 1gb. You can put all sorts of stuff in there, but the space is finite. Single layer dvds (the ones you can burn yourself) max out at 1 hour 30 minutes of video footage. This is standard for any dvd video.
With dual layers you have over 9gb of data. Depending on the type of film, you can fit more than one in there, and with animation (especially 2D) you can get away with more compression than something like Surf's Up could. Its whatever you choose to do within the limit of space provided.
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It has all special features and extras, but it will only play in full format (no widescreen). Since I have a wide screen monitor, I just use VLC media player to adjust the aspect ratio. :D
I can't imagine that looks good.
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I can't imagine that looks good
The picture quality is excellent which is what I don't understand. As for the aspect ratio, it works perfectly as well.
I know how much a standard DVD can hold. Both LBT 5 and the double feaure are dual layer disks, but they are of the same quality and LBT 5 takes up more space than LBT 6 and 7 combined. I still don't understand how this is possible when there is no compression on the double feature disk. I put the vob files through my converter to see their specs, and they're identical! I have no clue how that's possible.
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My only thought is that there is erroneous data on the LBT 5 file which is inflating it for no benefit.
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A scratched DVD could certainly cause issues in reading the disc, which may produce strange and inaccurate figures.
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Both DVD's are brand new. Besides, I take good care of my stuff. The chances of it being scratched is very low. :^.^:
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Maybe it's double layered and more highly compressed since it's 2d animation, like someone suggested above with very little loss of video quality.
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I spent a few hours today decrypting and copying the dvd onto a standard 4.7gb disk. Surprisingly, it works just fine and it looks great! I cannot understand it. I had to compress it to 74% of it's original quality though.
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Both DVD's are brand new. Besides, I take good care of my stuff. The chances of it being scratched is very low. :^.^:
DVD could still rot and you wouldn't notice it. I had one that no computer would touch yet it looked entirely brand new, so something was certainly wrong. You can't always see it.
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I've read elsewhere where some have had their dvd's seem to rot or something and some of their dvd's seem to still be in great condition even after many years. I guess it depends on the materials used, and the quality of the manufacturing.
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I've read elsewhere where some have had their dvd's seem to rot or something and some of their dvd's seem to still be in great condition even after many years. I guess it depends on the materials used, and the quality of the manufacturing.
...Or the quality of the user.... :D
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I guess it could be that too, didn't think of that. I keep my dvd's in binders with disk sleeves, instead of their dvd containers.
I wonder if animation can stand more compression then live action video with less loss of video quality.
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I invest a lot of money into protecting my CD's and DVD's. Probably more than they're worth. I have a special coating I spray on them to prevent scratches and resist heat and I also always keep them in protective covers. I also have some "CD Rings" that go around the CD and make it virtually impossible to scratch when playing them or just having them out. I've never had a scratched CD that was done by fault of my own (though I've bought a few used ones that were in pretty bad shape)
:lol
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I've heard mixed experiences about those cd ring things that go around a disk. Never heard of any spray stuff you spray onto disks to protect them.
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Environment makes a huge difference too on how long things last. Hot and humid generally isn't good for them. Your spray will do nothing if you scratch the top of the disc (label side up)...you can actually do more harm that way than scratching the bottom believe it or not. Manny said it best, the user dictates how well the disc will play.
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I guess it's a combination of user, environment and how one cares for them.
I read somewhere that double sided are more easy to scratch and mess up then single sided.