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-Stands for graphics interchangeable format
- The format supports 8 bit graphics
- There are 256 colors in the colour pallet chosen from the 24-bit RGB color space.
- The GIF format us the RGB color space
- GIF supports small animations and clips
- GIF is mainly used on the World Wide Web and is the second most common after JPEG
- they are well suited for simple graphics such as cartoons or logos with solid areas of color and text

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Steve Wilhite created the GIF file format on June 15th 1987

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GIF's only support an 8-bit colour palette. Meaning that GIF files are limited to only 256 Colours that can be used.
This means images saved as GIFs will also lost their detail and range of values.

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Supported by all web browsers

Relatively small file size

Is a lossless form of compression so it can be restored to its original form

Simple to make with an animation software.

Ability to grab attention easily

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Dithering is a way of reducing the colour range of an image down to 256 Colours or less.
Dithering creates the illusion that there are 3 colours present when there are only two colours.
Dithering has a negative effect on compression and reduces the amount a GIF can be compressed.

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The company that created the GIF format, CompuServe  mistakenly thought that the LZW compression algorithm was open source and Unysis required subsequent users of the LZW algorthim  have to pay licensing fees. People accused of LZW trying to cash in on the file format but they deny this.

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If you want to keep your Animated GIF file size small then you should try and keep the GIF fairly simple as this will bring the file size down.

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Unysis holds the patwnt to LZW

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GIFs cannot be opaque, they are either transparent or not.

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- stands for Dynamic HyperText Markup Language 

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- stands for Dynamic HyperText Markup Language 

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-The combinations of technologies included are XHTML, scripts Cascading Style Sheets (ccs) and Document Object Modelling (DOM)
- The Dynamic part of the name changes static HTML content, after the page has loaded completely
Examples of DHTML:
-Embed a ticker that refreshes its content automatically with data
-Rollover buttons or drop down menus
-It was introduced in the IE4 browser
Advantages:
-Loads contents fast
-doesn't require plug-ins
Disadvantages:
- Cost a lot to get DHTML editor software
-HTML coding is long and complex

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Quicktime is a media player that can be found on computers running the Mac OS. It is developed by Apple and was first released on the 2nd of December 1991. It allows Mac users to view various formats of digital video

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RealPlayer was initially released in April 1995

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Realplayer is a cross-platform media player.

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the company Futurewave created what would become flash.When macromedia bought futurewave and renamed smartsketch to macromedia flash.  Finally it was bought by Adobe and is now called Adobe flash.

Main file formats

FLA- only openable by flash and is the master file
SWF- The compressed video form of a flash animation.

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RealPlayer has a number of features such as:

Video Download Utility

Web Browser

Visualizations

Audio Recording

CD Ripping

Media Converter

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You do not have to pay for the software specifically but it is only available on the Mac OS (as of 2016 when Apple ceased support for the software on Windows which means you have to purchase a mac device.

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Realplayer has been accused of containing adware and spyware within their program which was sending data which was identifiable about people's music listening habits.
Although Realplayer released a patch for it and removed the spyware.

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Shockwave was originally created by Macromedia
SWF

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Silverlight was released in 2007 by Microsoft.
Silverlight is an application framework used for writing and running rich internet applications, its features and purposes are very similar to Adobe Flash.

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What does it provide?

Encoding and trans-coding video and audio fomr one format to another.

Decoding video and audio, then sending the decded stream to the graphics or audio subsystem for playback. In Mac OS X, QuickTime sends cideo playback to the Quartz Extreme (OpenGL) Compositor.

A plug-in architecture for supporting additional codecs (such as DivX)

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smooth animations

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When was RealPlayer first released?The first version of RealPlayer was introduced in April 1995 as "RealAudio Player" and was one of the first media players capable of streaming media over the Internet.What is it?One of the first media players capable of streaming media over the Internet.Give examples of some of its functions:Compatibility with all sorts of video formats (m4v, mp3, 3gp, avi, rv, mp4, wav)Real Downloader lets you download videos you want from thousands of websites, and watch them later in your RealPlayer libraryCreate Playlists to organize your videos in your RealPlayer libraryBuilt-in video-to-MP3 converter lets you extract audio from your videosAnd many others.Controversy surrounding Real Player?The controversy surrounding Real Player was back in 1998 when the G2 beta of the media system had a bug where it failed and produced an error message. The CEO of Real Player said Microsoft is breaking his software. Spokes people at Microsoft argued that it didn’t. When was Silverlight first released and by who?The first version of Silverlight 5 was released on December 2, 2010 and on December 9, 2011 in its final version and it was created by Microsoft.What is Silverlight?Silverlight is an application framework for writing and running rich internet applications that was actively developed and marketed by Microsoft.

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When was RealPlayer first released?The first version of RealPlayer was introduced in April 1995 as "RealAudio Player" and was one of the first media players capable of streaming media over the Internet.What is it?One of the first media players capable of streaming media over the Internet.Give examples of some of its functions:Compatibility with all sorts of video formats (m4v, mp3, 3gp, avi, rv, mp4, wav)Real Downloader lets you download videos you want from thousands of websites, and watch them later in your RealPlayer libraryCreate Playlists to organize your videos in your RealPlayer libraryBuilt-in video-to-MP3 converter lets you extract audio from your videosAnd many others.Controversy surrounding Real Player?The controversy surrounding Real Player was back in 1998 when the G2 beta of the media system had a bug where it failed and produced an error message. The CEO of Real Player said Microsoft is breaking his software. Spokes people at Microsoft argued that it didn’t. When was Silverlight first released and by who?The first version of Silverlight 5 was released on December 2, 2010 and on December 9, 2011 in its final version and it was created by Microsoft.What is Silverlight?Silverlight is an application framework for writing and running rich internet applications that was actively developed and marketed by Microsoft.

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Flash files don't work on Apple products such as iPads and iPhones.

You can only view flash if you have flash player installed into your machine or browser.
websites with alot of flash animation do not show up as commonly on search engines as the engines do not have enough data on them.

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AIFF, WAV, DV, MP3 and MPEG-1
(additional QuickTime extensions allows other formats like OGG, ASF, FKV, MKV, DivX Media format, and others.