Blu-Rays are used only for high definition. Blu-Rays hold up 5 times more data than a DVD can hold. Blu-Rays have capabilities that are way ahead of DVDs, such as accessing the bonus material while watching the movie
The main difference is the color of the laser used. Regular DVD players have used the traditional red laser, whereas the new Blu-Ray DVD players use an innovative blue laser. So what's the big deal? The primary difference is that blue light has a shorter wavelength than red light and thus allows the capability of faster speeds, more data storage, advances in miniaturization, and improved efficiency overall, among others. The blue laser light is emitted by GaN semiconductors, which are very expensive to produce and extremely rare. The first blue laser was produced by Dr. Shuji Nakamura in late 1999 in Nichia Chemical Corporation Laboratories. _________________________________________________________________________________________ Picture resolution. A regular DVD player in the U.S. is what's called an NTSC player and has 525 lines of resolution. The HD DVD has 700 to 1080 lines of resolution, depending on the way the disk was burned.
Blu-Rays are the highest HD out there yet and they will only play on Blu-ray Players which will only work on HDTVs. DVDs are not high definition, but they are compatible with Blu-Ray machines.
Parameters
Blu-ray
DVD Storage capacity 25GB (single-layer)
50GB (dual-layer)
4.7GB (single-layer)
8.5GB (dual-layer)
Laser wavelength 405nm (blue laser) 650nm (red laser) Numerical aperture (NA) 0.85 0.60 Disc diameter
Disc thickness
120mm
1.2mm
120mm
1.2mm
Protection layer
Hard coating
0.1mm
Yes
0.6mm
No
Track pitch
0.32µm
0.74µm
Data transfer rate (data)
Data transfer rate (video/audio)
36.0Mbps (1x)
54.0Mbps (1.5x)
11.08Mbps (1x)
10.08Mbps (<1x)
Video resolution (max)
Video bit rate (max)
1920×1080 (1080p)
40.0Mbps
720×480/720×576 (480i/576i)
9.8Mbps
Video codecs MPEG-2
MPEG-4 AVC
SMPTE VC-1
MPEG-2
-
-
Audio codecs Linear PCM
Dolby Digital
Dolby Digital Plus
Dolby TrueHD
DTS Digital Surround
DTS-HD
Linear PCM
Dolby Digital
DTS Digital Surround
-
-
-
Interactivity
BD-J
DVD-Video
Blu Ray players are the upgrade to the DVD player, and as such offers better picture resolution for the viewer. An important distinction is that Blu Ray players can read and play DVDs but DVD players cannot read and play Blu Ray discs.
Blu Ray Discs are able to hold more data which in turn means it is capable of holding HD copies, which if you have a HD TV will mean a greater quality viewing. Regular DVD just has normal resolution although the difference can only be seen if the TV is not an old standard one.
Bluray is the HD or high definition version of DVDs. "Regular" or Standard Definition DVDs are what play on standard screens while bluray is intended for HDTVs.
Beacaus bluray is newer and they think everybody has a bluray player... eventually it will come on dvd.
A DVD player cannot play a BluRay disc. A BluRay player can play both BluRay discs and DVDs.
No
Could be nothing more than the Bluray DVD's that you're watching aren't encoded in 5.1 surround.
A DVD player is a better decision than a BluRay player based on price alone. This type of player is cheaper. A BluRay player may be a better idea because it can also play DVDs and has more advanced features.
No. DVD quality will be displayed whether the player is a DVD player or a Bluray player. DVDs won't be the same quality as a Bluray disc of course.
Yes
To play a high definition DVD, you need a high definition DVD player. There are two types available currently. HD DVD, developed by Toshiba is one and BluRay, developed by Sony is the other. They are not compatible, so an HD DVD will not play on a BluRay player and a BluRay disc will not play on an HD DVD player. BluRay looks like it is the winner in the format war between the two companies over the last years so it is likely that Toshiba's format will disappear in the coming months. Note that HD DVD can refer to the Toshiba format but it can also refer to high definition DVDs in general.
No it cannot you need a ps3 or a bluray player
HD DVD and Bluray were competing high definition disc formats. In 2009 HD DVD was withdrawn from sale as it became apparent that Bluray had won the HD disc battle. The two formats are not compatible so HD DVDs can only be played on an HD DVD player.
No. All current 3D disc content is HD and so use Bluray discs. You have to have a 3D Bluray player.
the only difference is that the cut scenes look a little better on PS3 due to 360 having to compress them to fit on a dvd vs a bluray.