Discussion Forums > Technology

Is the difference between DVD and Blu-ray?

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nstgc:
[edit2] This poll is not meant to compare older movies/series. For example, I have a 1080p version of Card Captor Sakura. It about 80% larger and not much better than the 480p version. This is mostly due to the limits of the original source.[/edit2]

[edit3] I am referring to either original media or rips that are of good quality. Assume that both sources are rips not made by retards, and are both at least 300MB per 20 minutes.[/edit3]

I know several people who just can't tell the difference between SD and HD saying that with a proper upscaler they are the same. For those on this board I have trouble seeing how that is considering that the various well defined lines should make it clear. I will admit that sometimes the DVD source is better. In fact the DVD release of Gundam Unicorn was better than the BD version despite the BD being about 15% larger (by file size). I won't say that SD videos look bad, just that it tends to be clear that they are different.

[edit] I would like to tack on that I think that for HD video that is smaller than 200MB, it looks worse. 720p has 125% more pixes than compared to 480p, and 1080p has 125% more than 720p. It really doesn't start making a positive difference until about 220MB.

blubart:
there are just to many variables to make this poll conclusive in any way.

- are we talking about actual HD content (aka the real BD) or rips done by some more or less good encoder? i believe 90+% of the bakabt users never watched a real BD or BDISO.
- if the user has a crappy display setup (like watching his stuff on a 5" screen in the worst case) it's not a matter of if the user is capable of telling the difference between a DVD and BD or if there is a notable difference at all - nobody would be able to tell just because of the display.
- if we are talking about rips there is still the matter of the encoder. an idiot who believes an anime actually produced in HD can be sized down to 200mb for a 720p encode without losing detail will obviously produce an inferior rip to the good encoder that picks the right filesize for source and target resolution. that has nothing to do with SD or HD though.
- lastly even today quite a number of animes are still created in SD. take index for example - barely 720p material, where the differences between an SD upscale and a HD rip becomes indistinct. that is not an issue for old material only.

anime produced in HD, properly transfered to the BD/DVD and ripped by an experienced encoder with a reasonable setup and bitrate will always result in the BDrip looking better (as in more detailed) on an HD capable display device simply because of the limits imposed by the DVD.

halfelite:
tell them to go watch baraka. By far the most stunning bluray movie ever. If we are talking rips of things. I cant comment without seeing some samples. Like the person above there is just to many ifs.  If you compare a straight dvd video with a normal dvd upscale and no fancy $1,000 video processor. You can tell a difference. remember upscale does  not add things that are not there. Its just doubling the pixels in a complex algorithm to match the current count So you lose out on detail.

vuzedome:
Even hardware dvd upscaling technology fails.

rathoriel:
This thread brought back some old memories of music CD's. Remember the old 3 letter coding AAD, ADD, DDD. when CD's first came out they had this codeing on the back...after awhile they just did away with it a=analog and d=digital...if memory serves me the first letter was for the original recording, the second the mastering and the final was always D for the end product CDs are digital. you could always rip a VHS tape and burn to a DVD but it will only be as good as the source. For DVD or bluray to shine the original has to be created to the specs of the end product.

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