Content

Since prices of camcorders have declined with advancing technology, many individuals now have digital video recording devices. Also, mobile phones have increasingly installed cameras, which allows the recording of short films. Video Portals include a platform for these short films. Since the content comes mainly from the users of these portals, we also speak of user-generated content.

In addition to the self-produced content, however, many are also some copyright-protected videos uploaded by third parties, such as music videos or TV shows. Many video sites have a maximum file size and length for uploaded videos, this leads to a reduction in video quality. The maximum length of video can be partially circumvented by splitting into several films.

Technical aspects

The requirement to provide a variety of video films without a significant impact to the large number of users available, can be met with traditional digital video formats. Therefore the portals in general limit the resolution of video on VGA (640 × 480) and also use client software such as Flash for the buffering and playback of moving images via streaming control – it can start playing a video after a few seconds possibly well before the entire movie is downloaded. It may however be required to install the program and the appropriate playback plugin in the browser.

Technical aspects

The fabric of online encyclopedias is in digital form and much more practical compared to what the printed encyclopedia and multimedia content offer. It in fact has several interesting options such as enabling animation, films and sound recordings and distribution. The information is available as a database and can be queried interactively although they differ from printed online encyclopedias as do not respect the lyrical content (especially not when originally printed encyclopedias have been digitized), but regarding the links and search capabilities. Also, a large part of the information in these database are created by internet users and not the site’s owners.

Their current expenditures are also not in the form of mere transfer of printed editions or card boxes, The data that are available are in the form of electronic media, and it is only necessary to use the common electronic database for the construction of lexemes and indexing (automatically generated cross-references ).The power is then through the systematic re-writing by the collective of authors on the basis of lexical databases, for example by the network protocol "DICT" provided. The systematic of the content in these systems can by spatial images of the network structure of lexical items which are controlled to serve as a navigation tool.

Type of data

Different search engines are used to search different types of data. First, these may be separated into "document types" such as text, image, audio, video and others. Results pages are designed in response to this genus. When searching for text data, a text fragment that contains the search terms is usually displayed (often called snippet). Image search engines show a thumbnail on the right images. A large proportion of all searches on the Internet refers to actual people and their activities. A search engine for people will find publicly available information such as names of persons, their info and contact details, displayed as a list of links.

Presentation of the results

The page on which search results are displayed to the user (sometimes referred to as search engine results page , in short called SERP), are divided (often physically) for many search engines in the natural listings and sponsored links .To facilitate the use of the search engines for the user, results are displayed by relevance, each search engine having their own criteria to classify the results as such.