Tip #3846 - MP4 Explained
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Q:
Can you explain to me what an MP4 is? I've obviously heard of MP3, but
now there's an MP4?! I'm so lost and confused. Please help!
A:
Yes, there is. I know, isn't it amazing how fast the world of technology
develops? It seems like we get caught up on one thing and the next day,
there's something new to learn about. I mean, we shouldn't complain, because
all of the technology we're surrounded by is what keeps some of us going
each day, but it definitely is a little hard to stay on top of everything
that comes about.
But even though understanding
everything gets a little difficult sometimes, it's not impossible. I promise
that after today, you will fully understand one more computer term and
you will be able to check it off your "find out what this is"
list! Alright, let's get right into it!
To start with a quick
definition, MP4 files are compressed video files. Their main purpose is
to make video files much smaller so that they are easier to work with
and support. Video files used to be very big in size and they were very
difficult to work with. But now, the same files are compressed with the
same material and they go by the new name of MP4s.
MP4 files work very
similarly to MP3 files in that they are compressed files that do not affect
the quality of sound. (In case you're not sure, MP3s are music and audio
files, so an MP4 is just taking that to the next level with videos). The
term MP4 is also known as MPEG-4 AVC, which stands for advanced video
coding. Now, if you're still not sure how the whole MP4 technology works,
make sure you keep reading, because it's going to get even more interesting,
I promise!
Since MP4s deal mostly
with video files, they are a little more complex than the MP3 music and
audio files. But, they are still able to be compressed by using special
coding procedures. For example, certain aspects of the files are minimized.
Those are usually the temporal and spatial redundancies. The motion and
intra estimations of the frequencies are usually transformed as well.
And last, but not least, the file goes through a lot of compression and
decompression, which is referred to as codec.
Now, I'm sure you're
probably wondering if there's such a thing as an MP4 player, right? Well,
yes there is. It works just like any other media player. You can purchase
the device at any regular electronics store and you then just hook it
up to your computer or television. It really is that easy, even if it
doesn't seem like it!
Of course, as with
everything else, the MP4 technology has its ups and downs. Let's start
with the advantages. MP4s are able to produce videos with a DVD quality
at a rate of 1 Mbps or less with a broadband Internet connection. (That's
blazing fast!) So, if you were to get an MP4 player, you could get your
videos and watch them in a matter of seconds. MP4 players can also play
older MP formats, including MP3 audio files.
As for the disadvantages,
there will more than likely be several piracy issues within the MP4 technology.
The MP3 format went through this as well. As you may already know, there
are pirated versions of movies on the Internet that are ready for download
at any time. So, with MP4s mainly dealing with videos, the piracy problems
are sure to get out of hand as this technology becomes more and more popular.
Just keep an eye out for that!
So, there it is. The
MP4 technology explained for you in as simple of terms as I could come
up with. I do hope you have a better understanding of this now and who
knows, maybe you'll be the next person to start MP4ing around!
~ Erin
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