Videos

Video
== Video is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images representing scenes in motion. ==

- Wikipedia, The free encyclopedia

=Description of topic = There are two types of videos

Analogue Videos:
The recording of this type of video is done by capturing and stores continuous waves of red, green and blue colours. Sice in captures waves of these colours,it's continuity enables it to have a wider capacity to capture precisely each colour of the object or landscape. Therefore, analogue videos tend to use a higher amount of memory for its storage. Analogue videos can be caputred with a VHS cam recorder.



VHS or Video Home System is the most popular Video Casette Recording format(VCR). It was the trigger for tha market of movies since it's tape was long enough to watch a 2 hour recording.

Nowadays, that the digital world is becoming more and more popular each day, there are many easy ways to convert an analogue video into a digital video, making it easier for the user to edit the video with a wide range of options. In order to do so, an ADC ( Analogue to Digital Converter ) is needed; ADC is a device which converts a "continuous quantity to a discrete digital number".[1]

Digital videos:
Digital video is audio/visual in a [|binary] format. Information is presented as a sequence of [|digital] data, rather than in a continuous signal as analog information is.[2] Digital video consists in the capturing of different colored "dots" which joined together form an image. An image which joined together to other consequent images, form a video.
 * == Analogue == || == **Digital ** == ||
 * Videos which are a group of analogue pictures (film) || Videos which are formed by a group of digital images. Edited in a computer with an application software.  ||

= Vocabulary =
 * = Analogue ||= Digital ||= RGB ||
 * = Frame ||= ADC ||= Pixels ||
 * = Bits ||= Color depth ||= VHS ||

= Video Formats =
 * **[|.3g2]** || 3GPP2 Multimedia File ||
 * **[|.3gp]** || 3GPP Multimedia File ||
 * **[|.asf]** || Advanced Systems Format File ||
 * **[|.asx]** || Microsoft ASF Redirector File ||
 * **[|.avi]** || Audio Video Interleave File ||
 * **[|.flv]** || Flash Video File ||
 * **[|.mov]** || Apple QuickTime Movie ||
 * **[|.mp4]** || MPEG-4 Video File ||
 * **[|.mpg]** || MPEG Video File ||
 * **[|.rm]** || Real Media File ||
 * **[|.swf]** || Flash Movie ||
 * **[|.vob]** || DVD Video Object File ||
 * **[|.wmv]** || Windows Media Video File ||

[3]

Creation / edit of media

Moviemaker
Moviemaker is a program offered by Microsoft which enables users to edit, create, record both audio and video and share videos. It is a very useful tool since it also able to export the created movie to the web, via email or to a CD. It is a veru friendly program which requires no previous training and is therefore extremely useful for the creation of homemade movies ot projects. Other similar program which is commonly used for the editing and creation of digital videos is **iMovie.**

 


 * Tricky questions **
 * In cinemas, is the video projected, analogue or digital?
 * Which type of video has a higher quality?
 * What is the difference between iMovie and Moviemaker?


 * SOURCES **

[1]http://en.wikipedia.org/wiki/Analog-to-digital_converter [2]http://searchsoa.techtarget.com/sDefinition/0,,sid26_gci211952,00.html http://www.fileinfo.com/common.php http://toolkit.mindbites.com/wp-content/uploads/2008/02/imovie.jpg