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What You Need to Know About Digital Video Recorders

Digital video recorders or DVR's recordAnother advantage of having a digital video
videos that are in digital format to arecorder instead of older recording devices
medium. A disk drive is a sample of thisis that you can also command it to alert you
medium. These digital video recorders come inwhen it detects certain security threats.
the form of stand-alone set-top boxes thatBecause some digital video recorders have
are connected to a monitor or television setbuilt-in sensors that can detect movements as
for viewing. By connecting a digital videowell as changes in the environment, you can
recorder to your video surveillance system,program it to send you a notification through
you can easily record the images captured byyour e-mail in order to warn you of the
your  security  camera.event. With the help of a digital video
recorder, business owners can watch over
DVR  vs.  VCRtheir employees even though they are far
away. Even parents who are away on a business
Unlike the VCR and other older methods, thetrip can make sure that their kids are safe.
digital video recorder can impress you withAnd, they don't have to worry about leaving
its wide array of functions and benefits. Fortheir kids to a babysitter because they can
one thing, you can store more video footagesmonitor  her  every  move.
when you use a digital video recorder since
the  video  is  compressed onto a hard drive.Video  Compression  Formats
Another advantage of using a digital videoVideo compression in DVR's is necessary since
recorder is having more viewing and recordingraw video takes up gigabytes of space on a
options. Recording only when there is motionhard drive. So in order to make use of
is most popular but scheduled and alarmlimited hard drive space the video is
recording are also available. Being able tocompressed when recorded and decompressed
mark the footages that you store can make itwhen viewed. You've probably seen a number of
easier for you to find them later on. There'sDVR's stating different compression formats
no more need for you to go through piles ofsuch as MJPEG, MPEG-2, MPEG-4, Wavlet, H.263,
video tapes just to find the footage that youH.264. These are different methods of
are looking for. With an IP-based digitalcompression called Codec's, Codec is a short
video recorder, you also have the option ofname for coder-decoder. When purchasing a DVR
sending video feeds over the Internetwhat you will mainly find is MJPEG will be
allowing you to view them wherever you go.used in less expensive models intended for
This system is usually used by BPO companiesthe homeowner or individuals that may not be
for monitoring their employees all over therecording continuously. These models do a
world.good job of compressing and decompressing the
video adequately and their playback quality
With a digital video recorder, you also haveis good. In many cases MJPEG is all you need.
the option of storing the footage taken byHowever if you intend to use networking and
more than one camera at the same time. Youview or record the video remotely MPEG-4 or
can also view more than one camera on yourH.264 are better choices. Their per frame
monitor during live or playback mode. Yousize is smaller resulting in more frames per
just need to choose a digital video recordersecond that you can receive when viewing over
that has the number of channels that youthe internet and they also take up less space
need. This benefit is not available inon your hard drive. The MPEG-4 and H.264
conventional  recording  devices  like VCR's.digital video recorders will cost more but
may be worth the investment in the long run.



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