Presentation on file types

1. MP3 & MP4
File Format
By:
Shehrbano
Safa
Asma
Rida

2.  What is MP4?
MP4 is short for MPEG-4 Part 14.MP4 is a container
format, meaning it is used to store audio and/or video
data, rather than to code the information. MP4 video
and audio can also be streamed over the
internet. This is also true of most other modern
container formats.
Because MP4 is a container format, it does not have
a standard method of coding the audio or video
information. Instead, codes dictate how the audio or
video will be coded and possibly compressed. For
audio, Advanced Audio Coding, or AAC, is the most
popular codec for compressing audio for transfer on
the internet.

3.  What is the difference between Mp3 and Mp4 ?
MP3 is an audio compression format used to
compress and store audio on a computer. MP4 is a
media container format used to store media of many
possible types on a computer.
Therefore, an MP3 file is limited with regard to the
method of compression and can only store
audio. MP4 on the other hand, can store video as well
as audio. It can even store subtitles for a video
file. Also, since MP4 is a container, it can store audio
and video that have been compressed in different
fashions. In fact, an MP4 file could be audio that has
been compressed as an MP3.

4. What are the advantages of Mp4?
allows streaming over the Internet
creates the basis for developing other mobile media
codecs included in “MP4 Family”
supports high-quality audio
can be simply decomposed into constituent objects
flexible object structure depends directly on their
type
large hardware support

5. What are the disadvantages ?
 they can play back only archived content.
You can't use them to stream live events.
Also, MP4 files require you to wait for pre-buffering
before viewing content, increasing the amount of
time it takes to view the video as a whole.

6. What is mp3?
 MP3 stands for MPEG-1 Audio Layer 3. It is a digital
audio encoding format that can be used to effectively
compress sound files with minimal loss in perceived
quality. MP3 is strictly an audio encoding format,
which means that it cannot be used for photo or
video encoding, unlike some of the other formats out
there.

8. Advantages of mp3
 This is a compressed format which makes the sound
files substantially smaller.
 The sound quality is very good. If an mp3 file is
recorded and compressed properly the quality can rival
that of an actual CD.
 New technology is emerging that will allow you to
“stream” the file so that the audience doesn’t have to
wait for the entire file to download before they can
hear it.

9. Disadvantages of mp3
 The file size is still larger than a Real Audio file and a
whole song would still take quite awhile to download
over a normal phone line connection.
 Your audience must download and install a helper
application or plug in to hear the sounds.
 Its small size lends to easy copying and distribution
over the Internet.

10. Applications of mp3
1.Radio
2.8-Tracks
3.Cassette tape
4.Compact Disca
5.Digital Auto tapes
6.Mini Disc