About DVD's
DVDs
have become the most popular playing media and it's no surprise
Superior picture, sound quality and affordable
prices have sent classical VCRs back to history.
But, before you buy a DVD player, you should consider the
following:
Connection and
Picture Quality
The video signal from your
DVD player can get to your TV using either "composite video",
"S-Video", "component video" or "RGB" formats. Composite video is
the lowest quality, RGB is the best.
Aspect
Ratio
Most movies are presented with a 16:9
"aspect ratio", which is different from the 4:3 ratio of a standard
TV screen.
All DVD players will let you watch the movies in
16:9, with a blank strip along the top and bottom. This is called
"letterbox" format. Some also have a "pan and scan" feature that
lets you watch them on the full screen, but with the sides of the
image trimmed, but only if the disc allows it.
Sound
If you plan to simply hook
up your DVD player to a TV, the sound will only be as good as your
TV speakers. Even with expensive TVs, that's usually pretty poor.
Some DVD players come with a subwoofer outlet socket. Adding
a subwoofer will improve the bass sound, but it's much better to
connect the player to a stereo system. The digital audio signal can
get to the receiver either by copper wires (coaxial digital output)
or a fibre optic cable (optical digital output). Either way, most
systems will sound great to most people, when connected to a good
sound system.
The full potential of DVD can only be
appreciated using the player's home theatre surround-sound
capability. For this, you will need a Dolby Digital (AC3) and/or DTS
(Digital Theatre Systems) receiver and five or six speakers. Also
either the player or receiver must have a built-in decoder for the
digital audio signal.
A headphone socket is offered on some
models, but it won't be necessary if your TV (or surround sound amp)
already has one. A microphone input opens the door to the wonderful
world of karaoke.
DRC or Dynamic
Range Control
A feature on many DVD players that
lets you alter the balance of loud and soft sounds. Most valuable if
you find the music too loud for the dialogue.
Parental Control
There are at
least three ways the player will let you restrict access. One is a
simple "child lock" on the whole machine, that requires a code
number (pin) to undo.
Another, usually called "parental
control", checks the (US) rating on the DVD - if it's restricted, a
pin is required. You set trigger levels on an eight-point scale on
your unit to stop discs being played.
Then there's the "disc
lock" approach, which allows you to rate and store the rating for up
to 50 of your own discs.
Compatibility
Playing CDs
DVD players aren't
just restricted to playing digital versatile discs. They can also
play audio CDs (including recordable/rewritable CDs), which is more
than can be said for many dedicated CD players. What's even more
impressive, almost all new models can play MP3s!
With a
generous variety of audio outputs and the right equipment, a DVD
player is a viable option for using with a stereo as well as a TV.
The menu options tend to revolve around DVD playback, but CD
features such as resume, shuffle and repeat are becoming more
common.
Playing recordable
DVDs
If you have a digital camcorder and a DVD
burner, there's a good chance your DVD player will be able to play
your digital home movies. There are five different formats: DVD-R,
+R, -RW, +RW and -RAM.
Unfortunately, although most new DVD
players can cope with one or more of these formats, their packaging
(and even instruction manuals) don't always make it clear. Ask in
the shop.
JPEG viewer
Some players allow you to view single image files
copied to a CD, DVD or even a memory card.
DVD zones
New movies are
released to cinemas in different countries at different times. DVD
versions of movies are zoned in an attempt to prevent them being
played in any country before the movie has had its cinema release
there. So, all digital versatile discs and most of the machines that
play them are zoned for a particular region: New Zealand and
Australia are in Zone 4. Europe is Zone 2. The US is Zone 1.
For more info about how DVD's work visit How DVD Works