Blu-ray and HD-DVD are the next generation of disc types allowing for high definition movies in 1080p. HD-DVD and Blu-Ray are not compatible with each other, but both types support normal DVDs.

Is the player a stationary player for home use without a screen, or is it a portable with a screen operated by batteries.

Indicates the types of discs the recorder can record on. Most recorders record on DVD but products with Blu-Ray and HD-DVD recording are on the horizon. Some products record both on discs and on an internal hard drive.

Indicates whether or not the player has a built in video/VCR.

Shows if there is a built-in hard drive. That means that you can record film, images or music.

BD Live offer a variety of Web-enabled features, from downloadable trailers to chat and instant-messaging functions.

Does the player have a CD/DVD changer with the possibility of having more than one disc in the player at the same time in order to be able to switch beetween multiple movies or cds.

Indicates if the player has support for memory cards. Could be SecureDigital (SD), MultiMediaCard (MMC) or any other type of memory card. A memory card reader can be used to display pictures stored on memory cards.

Filtering on Blu-Ray or HD-DVD and Multi-Region as "Yes" will not guarantee that the player plays multi-regional normal DVD discs. To be sure, check the information of your selected retailer for the product.

Upscaling is a process that mathematically matches the pixel count of the output of the DVD signal to the physical pixel count on an HDTV, which is typically 1280x720 (720p) or 1920x1080 (1080i).

Indicates if there is an on-board Dolby Digital Decoder .
Dolby Digital - A sound format that probably will become the standard regarding multi-channel sound. Other formats include Dolby Pro Logic and DTS. The difference between Dolby Pro Logic and Dolby Digital is that Dolby Digital splits the sound into five channels while Dolby Pro Logic uses four. Dolby Digital also provides two separate surround channels for greater realism, and an additional ".1" or "LFE" channel for low-frequency (bass) special sound effects. DTS is another 5.1 system similar to Dolby Digital.

THX is an exclusive set of standards and technologies established by the world-renowned film production company, Lucasfilm Ltd. THX grew from George Lucas' personal desire to make your experience of the film soundtrack, in both movie theatres and in your home theatre as faithful as possible to what the director intended. Movie soundtracks are mixed in special movie theatres called dubbing stages and are designed to be played back in movie theatres with similar equipment and conditions. The soundtrack created for movie theatres is then transferred directly onto Laserdisc, VHS tape, DVD, etc., and is not changed for playback in a small home theatre environment. THX engineers developed patented technologies to accurately translate the sound from the movie theatre environment into the home, correcting the tonal and spatial errors that occur.

The types of sound formats the player supports. Examples of popular sound formats are Dolby Digital, DTS, Dolby Prologic etc. This are only supported formats, not decoders.

Indicates the number of bits of the audio DAC (digital-to-analog converter) and its sampling frequency. Typical DVD players feature 24-bit DACs operating at 96kHz (96,000 times per second). 24-bit word length for audio encoding is the state-of-the-art and will be for the foreseeable future. DVD-Audio capable players use 192 kHz sampling rate DACs to reproduce the high-resolution audio information. Some state-of-the-art DVD-Video players also use 192 kHz sampling for better audio performance. For most "everyday consumers", 96kHz/24-bit audio DACs are sufficient. But if you're looking for a DVD-Audio player, 192kHz/24-bit audio DACs are required.

Indicates that the DVD player is capable of processing and outputting progressive scan images via the progressive scan component video output. Progressive scan images look more film-like and is less subject to certain motion artifacts as common with "conventional" interlaced scanning. This type of video signal is useful only if you have a digital TV(or HDTV). If you don't have a progressive scan capable TV, you can still use interlaced video output to drive your current TV. To fully reduce motion artifacts, its recommended to use a progressive scan DVD player that performs 3:2 pulldown.

Indicates the number of bits of the video DAC (digital-to-analog converter) and its sampling frequency. Typical DVD players feature 10-bit DACs operating at 27 MHz (27,000,000 times per second). State-of-the-art DVD players use up to 14-bit DACs operating at 108 MHz (quadruple the speed of typical DVD players) to render an ever better picture, closer to the original film master. For most "everyday consumers", 27MHz/10-bit video DACs are sufficient. But if you have a large screen TV (40" or larger), you may enjoy the subtle improvements in picture quality.

Indicates the physical disc formats supported by the player. This does not include any file formats which might be supported.

Indicates that the DVD player is capable of playing back the new DVD-Audio format. DVD-Audio is a super high resolution audio only format, featuring 6-channel surround sound. DVD-Audio playback requires 5.1 channel analog input and an "analog bypass" mode in the A/V receiver.

Shows if the DVD player supports SVCD format.

Shows if the DVD player supports VCD format.

Shows if the DVD player supports DivX format. DivX is a digital video compression format based on the MPEG-4 technology.

Shows if the DVD player can play music in MP3 format.

Some DVD-players can display photos burned on a CD. The most common types of CDs used for displaying photos are JPEG and Kodak picture CD.

The three-jack (RCA/Phono) component video connection splits the video signal into three parts (one brightness and two color signals). Component video has increased bandwidth for color information, resulting in a more accurate picture with clearer color reproduction and less bleeding. A growing number of TVs include component video jacks to provide the best possible picture quality (better than S-video or composite video) when connected to a compatible DVD player. Special wide-bandwidth component video connections are capable of carrying wider bandwidth video signals, like progressive-scan DVD and High-Definition digital television. All HDTV-ready TVs include at least one set of wide-bandwidth connections for connecting a separate HDTV tuner (or progressive-scan DVD player). A component video connection can carry high bandwidth signals such as 1080i and 720p.

HDMI (High-Definition Multimedia Interface) is the first and only industry-supported, uncompressed, all-digital audio/video interface. By delivering crystal-clear, all-digital audio and video via a single cable, HDMI dramatically simplifies cabling and helps provide consumers with the highest-quality home theater experience. HDMI provides an interface between any audio/video source, such as a set-top box, DVD player, or A/V receiver and an audio and/or video monitor, such as a digital television (DTV), over a single cable. HDMI supports standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable. It transmits all ATSC HDTV standards and supports 8-channel, 192kHz, uncompressed digital audio and all currently-available compressed formats (such as Dolby Digital and DTS), HDMI 1.3 adds additional support for new lossless digital audio formats Dolby TrueHD and DTS-HD with bandwidth to spare to accommodate future enhancements and requirements.

A digital coaxial connection refers to a wired connection that is used for transferring digital audio signals (such as PCM, Dolby Digital, and DTS) from a source device, such as CD or DVD player and an AV receiver or Surround Sound Preamp/Processor. Digital Coaxial Connections use RCA-style connection plugs.Also Known As: Digital Audio Connection, Digital Audio Coaxial Connection.