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DVD Buying Guide
DVD players are a simple enhancement to your home entertainment system.
They make movies look great, and provide better image and sound quality.
Of all the DVD-type players, Blu-rays are known for having the best image
quality; however, with some simple additions, DVD players can definitely
compete. Twice as good as a VHS player, a DVD player gives better resolution,
dual sided/dual layer discs, and options for viewing in widescreen or letterbox
format. DVD players offer options for sound too, CD-quality sound and several
configurations of Dolby 5.1 surround sound.
Questions to Ask Before Purchasing a DVD Player
Should I buy a DVD player or a Blu-ray player? Are you trying
take advantage of every aspect of your HDTV? Blu-ray players have a higher
resolution than DVD players, but DVD players can upconvert so they can
produce a higher resolution. The DVD player still sends the same digital
signal to the TV, but with HDMI cables the player will send cleaner signals
to the TV, giving your image and sound a boost.
Can I play CDs and DVDs on my player?
The best solution for people looking to play both CDs and DVDs is a DVD
player that has a multiple disc changer. DVD players can play and store
anywhere from one to hundreds of discs. They are even capable of remembering
the last disc played.
What if I still need a VHS player too? Easy solution, a combination
VHS and DVD player. The combination units have many features that make
them very enticing. They can play CDs, have a better resolution than VHS
only players, and some have a DVD burner option so you can record your
favorite shows.
I have so many VHS tapes, is a DVD player for me? The same DVD/VHS
combination unit will be the best option for you. Make sure you get the
DVD recorder combo unit. This will enable you to record the VHS tapes
onto a DVD. Not only will you be able to record VHS to DVD, you will also
be able to record programming from TV to DVD.
Is a portable DVD player right for me? Do you travel a lot or
would you like to have it in the car? Then a portable DVD player is the
choice for you. They are small enough to take most places and fit on a
lap. They can be mounted in cars, boats, or most vehicles.
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Do I need to buy additional cables?
One consideration, what kind of TV will you hook up to the DVD player?
If you have an HDTV then you would benefit from buying High Definition
Media Interface (HDMI) cables. They are like an upgrade for DVD players.
They will give you better image and sound quality. Most DVD players are
capable of hooking up to a TV one of three ways: component, S-Video, and
composite.
HDMI
HDMI cables are able to send Hi-Def video and multi-channel audio to a
TV. HDMI cables are important for a few reasons. They send the best audio
and video to your TV from any number of components. If you have an HDTV
and a Blu-ray player, an up-converting DVD player, Playstation 3, or an
Xbox 360 chances are that you will want to use HDMI cables.
HDMI cables are not all the same. They are constructed of different materials,
have varying lengths, and some are rated for the signal quality they must
maintain over long lengths. HDMI cables must be tested at an authorized
HDMI testing center to be able to carry the HDMI name. Testing centers
are very strict with the specifications that the cables must have.
There are a few different types of HDMI cables: HDMI 1.3 and HDMI 1.4.
HDMI 1.3: Bitrate increases on the 1.3 as well as the bandwith. This
cable can support Deep Color whereas the previous cables could not. CEC
capacitance limits were changed, CEC commands for timer control were brought
back-with added audio commands, and the sRGB quantization range was clarified.
HDMI 1.4: Released in June of 2009, version 1.4 increases the resolution
available through the cables, HDMI Ethernet Channel allowing for a transfer
rate of 100 Megabytes per second between the two HDMI devices. An automotive
connection system has been added, along with and Auto Return Channel,
micro HDMI connector, and added support for color.
1080p: This is one of the more important terms to know when buying
a DVD player. Usually, the resolution is described in numbers and letters.
1080p, 720p, and 1080i are the numbers that are associated with High Definition
TV (HDTV). The numbers stand for the lines of pixels in the screen. The
total number of pixels is measured by multiplying the lines of pixels
(horizontal and vertical). For instance, when a TV is 1080p, it is actually
1920 (horizontal lines of pixels) X 1080 (vertical lines of pixels) =
2,073,600 total pixels. The letters associated with the numbers "P"
and "I" stand for progressive and interlaced.
16:9 and 4:3, also known as Aspect Ratio: An aspect ratio of an
image is its width divided by its height. In terms of a DVD player, the
aspect ratio is how the image is altered to fit the TVs aspect ratio.
16:9 is the universal standard for High-Definition TVs and 4:3 is the
universal standard for standard definition TVs.
3-2 pull down processing: When video based movies are converted
to progressive scan they need some modifications to flow without interruption.
The fluidity becomes uninterrupted when extra frames are created and two
original frames are combined.
Component Video: Between S-Video, Composite, and Component-Component
is the best signal you can send to your TV from your VCR or DVD player.
The component signals are separated into color and brightness. The color
and brightness signals are separated into two separate signals each. This
gives a better, clearer signal and eliminates color bleeding and improves
color precision.
Composite Video: The brightness and color signals are combined
into one signal.
DivX: Is the brand name of the company that created a technology
similar to mp3s. With DivX technology, a large video file can be compressed
into a considerably smaller file.
Dolby Digital: This surround sound technology gives the listener
undeniable music quality from any source. Dolby can produce anything from
1-5.1 channels of surround. (Dolby Digital Plus offers up to 7.1 channels
of surround) If the DVD player that you are purchasing does not include
a Dolby decoder, then you will have to connect it with a receiver. Dolby
Digital has been the standard for surround sound for many years.
DTS Digital Theater System: Similar to Dolby Digital surround,
but DTS is usually 5.1 channel only. DTS is used for commercial, theatrical,
and consumer applications.
DVD Audio A: Audio format for sending High-Fidelity audio from
a DVD to a TV or receiver.
Frame: When movies are made they are a series of still shots (frames).
If you hit pause, you would see a "frame" of the movie.
HDCD-High Definition Compatible Digital: These CDs have a patented
encode-decode process that is owned by Microsoft which improves the audio
quality over a standard CD.
HDCP-High-Bandwidth Digital Content Protection: A security function
that requires compatibility between the sender (DVD) and the receiver
(TV). Compatibility must be built-in to both the sender and the receiver.
HD DVD: Similar to Blu-ray, HD-DVD offers full HD video and better
sound than a regular DVD
JPEG CD: Storing photographs on CD in JPEG format enables many
photos to be compressed for easier storage and transfer.
MPEG-Moving Pictures Experts Group: Set standards for compression
of audio and video.
OUTPUTS
Coaxial Digital Output-Digital Output: This output is the source of
sound from the DVD player to the TV. Most DVD players have both the coaxial
digital output and the optical digital output. Coaxial outputs are made
with standard cables and copper. There is a possibility of interference
with Coaxial output because the cable is susceptible to magnetic interference.
Optical Digital Output--Digital Output: Optical Digital Output
provides the second option for connecting a DVD player and a TV/Receiver
for sound. The Optical Digital Output is made with fiber optics and therefore
eliminates interference.
Pan and Scan: Enables widescreen video to fit standard a standard
TV's aspect ratio. This is the same thing that happens when VHS tapes
are played on a TV (message appears "formatted to fit your screen".
Parental Lockout: When the DVD has a rating capability, the DVD
player could read the rating and either play or not play the DVD based
on the guidelines employed by the user.
PCM-Pulse Code Modulation: This is the audio signal that is sent
from the DVD player to the TV. Once the signal hits the TV the audio is
amplified and played on the speakers.
Progressive scan: Creates a film-like image on the TV. They give
the image a higher screen resolution than interlaced DVD players of the
past.
Recordable DVD: A recordable DVD is a blank DVD. DVDR and DVDRW
are both able to have images and sound transferred from a Digital Video
Recorder (DVR) or DVD burner onto the disc. The DVDR can only be written
once, and DVDRW can be written multiple times.
Region Codes: This is a safeguard for the movie industry. DVD players
have region codes built-in so that DVDs from other regions can't be played.
This is a safety measure for the movie industry to keep movies released
in one region from being played too soon or at all in a different region.
Scaler: Converts the video signal received from the DVD to a resolution
other than it original format. Blu-ray players have similar properties.
Signal to Noise Ratio: Compares the level of audio/video signal
to the level of background noise.
Super Audio CD (SACD): SACD is a technology developed by Sony
and Phillips giving CDs more detailed sound than a normal CD.
Video Up conversion: Some DVD players have the ability to convert
lower image resolution to a higher one by surrounding existing pixels
with additional ones.
Revised 10/06/2009 |