Multimedia applications

File formats. Multimedia applications. Multimedia techniques.

To identify the type of file, an extension is added to the filename when it is saved on disk.

Common text extensions:

.pdf (portable document format) .doc (MS Worddocument) .rtf (rich text format)

.htm or .html (hypertext markup language for Web files)

Graphics include charts, photos, drawings, buttons, .gif (graphics interchange format) .jpg (jpeg - joint photographic experts group) .tif (tagged image file) Video refers to recording, editing and displaying moving images.

Common formats:

.avi (audio video interleave) .mov (QuickTimemovie) .mpg (mpeg - moving picture experts group)

You can hear sound such as songs, movie soundtracks and speeches. Common audio formats:

.wav (Windowswave audio format) .ra (RealAudio file) .mp3 (compressed music files)

Animations are made up of a series of independent pictures put together in sequence to look like moving pictures.Common formats: .gif for animated gifs .swf for Flashfiles. Files compressed with Winziphave a .zip extension.

A popular format used to compress and distribute movies on DVDs or over the Net is DivX,a digital video codec (COmpress, DECompress).

Multimedia has become a huge force in culture, industry and education. Practically any type of information we receive can be categorized as multimedia, from television, to magazines, to web pages, to movies, multimedia is a tremendous force in both informing the public and entertaining us. Advertising is perhaps one of the biggest industry's that use multimedia to send their message to the masses. Where one type of media, let's say radio or text can be a great way to promote an item, using multimedia techniques can significantly make an item being advertised better received by the masses and in many cases with greater results. Software engineers use multimedia in applications such as computer simulations for industrial/military training or even entertainment. In public places (e.g. museums and stations), there are information kiosks that use multimedia. Kiosk systems are being used in a variety of applications, including information directories, customer self-service terminals, electronic catalogs, internet access terminals, tourism guides, and more.

Several software packages can be used in kiosk environment, including a presentation development package and an on-screen keyboard package.

On the Web, audio and video are integrated into web pages. For example, RealPlayer supports streaming, which lets you play sound (e.g. from radio stations) and videofiles as a continuous stream while they are downloading.

Дата добавления: 2015-05-29