A DVD player is a device that plays DVDs. DVD players use digital optical discs to play back video, audio, and other data. DVD players are usually compatible with CD audio discs and can also play back Video CDs, Super Video CDs, and DVD-ROMs.
The HDMI cable is a type of cable that is used to connect devices such as a DVD player, a Blu-ray player, a cable box, and a surround sound system. The HDMI cable is a digital cable that can carry video and audio signals. The HDMI cable can also carry digital audio signals.