Music is an art form consisting of sound and silence expressed through time. Elements of sound in music are pitch (including melody and harmony), rhythm (including tempo and meter), structure, and sonic qualities of timbre, articulation, dynamics, and texture.
The creation, performance, significance, and even the definition of music vary according to culture and social context. Music ranges from strictly organized compositions and performances to improvisational or aleatoric forms. Music can be divided into genres and sub-genres, although the dividing lines and relationships between music genres are often unclear and/or controversial. Within "the arts", music can be classified as a performing art, a fine art, or an auditory art form.
Video clips in digital format are often found on the internet where the massive influx of new video clips during 2006 was hailed as a new phenomenon having a profound impact on both the internet and other forms of media. Sources for video clips include news and sporting events, historical videos, music videos, television programmes, film trailers and vlogs. Webvideo in its current form distinguishes itself from what is mostly known as video on demand mainly in terms of technology, interface and cost for the user.
YouTube is a video sharing website where users can upload, view and share video clips. YouTube was created in mid-February 2005 by three former PayPal employees. The San Bruno-based service uses Adobe Flash technology to display a wide variety of video content, including movie clips, TV clips and music videos, as well as amateur content such as videoblogging and short original videos.
MP3 is an audio-specific format. The compression removes certain parts of sound that are outside the hearing range of most people. It provides a representation of pulse-code modulation — encoding audio in much less space than straightforward methods, by using psychoacoustic models to discard components less audible to human hearing, and recording the remaining information in an efficient manner.
The current hype in online video viewing only arose when sites were introduced that offered free hosting for the high bandwidth content and the possibility to easily integrate these into personal Blogs or websites. This enabled online videos to cross over into the mainstream. The arrival of these sites also gave rise to more widespread use of the name webvideo. Video on demand however, is more closely associated with paid content of film studios, online video stores and cable providers.