Yes they are. Bluray players have an HDMI output for their high definition signal output as well as analog connections for compatibility with displays that are not HDMI compatible.
Beacaus bluray is newer and they think everybody has a bluray player... eventually it will come on dvd.
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 In 2009 HD DVD was withdrawn from sale as it became apparent that Bluray had won the HD disc battle.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.
Bluray and HD DVD are the two trade names for high definition discs and players. Bluray is by far the better choice for the simple reason that HD DVD was withdrawn in 2009. Bluray had won the HD format war so HD DVD quietly left the stores. There are a number of HD DVD discs around as well as the players. As the two systems are in-compatible, don't trash your HD DVD player just yet. It will still do a do job of playing the HD DVD discs you still have.
Could be nothing more than the Bluray DVD's that you're watching aren't encoded in 5.1 surround.
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.
A DVD player cannot play a BluRay disc. A BluRay player can play both BluRay discs and DVDs.
Yes, BluRay DVD players also play non Blu-Ray DVDs with no problem.
A Bluray disc stores five times more data than a DVD. Therefore, a DVD will not have the capacity to store the contents of a Bluray disc.
The introduction of high definition discs saw two formats launched. Bluray is one and HD DVD was the other. The format war was won by the Bluray system and HD DVD was withdrawn in 2009. Both Bluray and HD DVD are high definition players but note that "HD DVD" is the name of the format and is confusingly close to the generic description of high definition disc players. Bluray and HD DVD are not compatible so a disc of one type will not play on the other format. There are a handful of dual format disc players but they were expensive and few were sold. If you have HD DVD discs then you need to hand on to an HD DVD player if you want to watch them. All high definition discs on sale now are Bluray and of course will need a Bluray player to play them.
No
bluray
CD's, DVD's NO BLURAY