3.6 Multimedia/Digital MediaComponents (Audio and Video) by Francisco Oliveira

Audio

Podcasts

A podcast is a series of digital media files that are released episodically and often downloaded through web syndication.

Audio Editing Software

In Music, Audio editing is the process of taking recorded sound and changing it directly on the recording medium.

Examples Of Audio Editing Software

Audacity

Wavosaur

DJ Audio Editor

Audacity

This is an open source audio editor that is multiplatform. It is free and has an excelent set of tools making it one of the most popular audio editors. It is compatible with various file formats, it can record live audio and can also convert file formats.

Wavosaur

This is a free audio editor and recorder and can only run on microsoft operating systems. It, like Audacity, can run almost any file format and also has a good set of tools.

DJ Audio Editor

This is a more simple editor. It can only run basic

MP3 files and has only very basic, simplistic

Tools. It has a clean layout.

MIDI

Musical Instrument Digital Interface enables

Electronic musical instruments and computers

To communicate and exchange data.

MP3

This is the most popular audio format. This

Format eliminates portions of the file that are

Inaudible. This allows for a compression of

About 1/10 of the original size.

MP4

This format is very similar to the MP3 with the

Main difference being that this format can also

Support other media such as video.

WAV

This format is commonly used to store

Uncompressed, CD-quality files. This means they

Are quite large files (Around 10MB per minute

of music). If the file is encoded with various

Codecs its size would decrease.

Video

Video Editing software

Video editing can also be called Non Linear

Editing (NLE), and is an application software

That Enables people to edit videos on a

computer.

Vidcasts

Vidcasts are short for video podcasts. This

Describes the online delivery videos on demand,

Similarly to podcasts.

Special Effects

The illusions used in films, television and

Theatres Used to simulate the imagined events

in a story are called Special effects. These

Effects can either be done on the computer or

mechanically

AVI

Audio Video Interleave stores data that can be

Encoded with several different codecs, and can

Contain both video and audio data.

MPEG

This is the most common format, like the AVI

Format, can support both video and audio data.

The audio and video tracks are compressed

Separately:

Video – MPEG-4 video encodingAudio – AAC compression

Video codecs

A video codec is a software that enables video

Compression and decompression for digital

Video.

MOV

This is the QuickTime format. This is often used

On the internet, for saving movie and video files.

This format contains several tracks, containing

Video, audio, text or effects.

The End