Web video primer
<Return to home page Web video primer. Video can tell a story better than most of the alternatives. Video clips in digital format are often found on the internet where the massive influx of new video clips during 2008 was hailed as a new phenomenon having a profound impact on both the Internet and other forms of media.

 

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Web video primer
Uses for video
Video technical specs
Online video training
Video presentations
Viral videos
Internet commercials
     
 
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  Introduction to video on the Internet
  The use of video is growing in most viewer segments
   
 
Sources for video clips include news and sporting events, historical videos, music videos, television programs, film trailers and vlogs. Web video 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. 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 web video. Video on demand however, is more closely associated with paid content of film studios, online video stores and cable providers. Video on demand also specifically references videos that start at a moment of the user's choice, as opposed to streaming, multicast and webcams in which the data is sent to the user live by a server.

There are streaming video technologies and ones that must be downloaded completely before playing can begin. There are several competing formats for video playback including Flash Video, Quick Time, Windows Media Player 10, and MPEG 4.

Streaming Vs Progressive Download
Streaming media is multimedia that is constantly received by, and normally presented to, an end-user while it is being delivered by a streaming provider (the term "presented" is used in this article in a general sense that includes audio or video playback). The name refers to the delivery method of the medium rather than to the medium itself. The distinction is usually applied to media that are distributed over telecommunications networks, as most other delivery systems are either inherently streaming (e.g. radio, television) or inherently non-streaming (e.g. books, video cassettes, audio CDs). The verb 'to stream' is also derived from this term, meaning to deliver media in this manner.

IPTV (Internet Protocol Television) is a system where a digital television service is delivered using Internet Protocol over a network infrastructure, which may include delivery by a broadband connection. A general definition of IPTV is television content that, instead of being delivered through traditional broadcast and cable formats, is received by the viewer through the technologies used for computer networks. For residential users, IPTV is often provided in conjunction with Video on Demand and may be bundled with Internet services such as Web access and VoIP. The commercial bundling of IPTV, VoIP and Internet access is referred to as "Triple Play" service (when these three are offered with mobility, the service is referred to as "Quadruple Play"). IPTV is typically supplied by a service provider using a closed network infrastructure. This closed network approach is in competition with the delivery of TV content over the public Internet, called Internet Television. In businesses, IPTV may be used to deliver television content over corporate LANs.

The term P2PTV refers to peer-to-peer (P2P) software applications designed to redistribute video streams in real time on a P2P network; the distributed video streams are typically TV channels from all over the world but may also come from other sources. The draw to these applications is significant because they have the potential to make any TV channel globally available.

Video blog
A video blog, sometimes shortened to vlog is a blog that comprises video. Regular entries are typically presented in reverse chronological order and often combine embedded video or a video link with supporting text, images, and other metadata.

Webcasting
A webcast is a media file distributed over the Internet using streaming media technology. A webcast may either be distributed live or on demand. Essentially, webcasting is “broadcasting” over the Internet. The generally accepted use of the term webcast is the "transmission of linear audio or video content over the Internet". A webcast uses streaming media technology to take a single content source and distribute it to many simultaneous listeners/viewers.
  The largest "webcasters" include existing radio and TV stations who "simulcast" their output, as well as a multitude of Internet only "stations". The term webcasting is usually reserved for referring to non-interactive linear streams or events.

Rights and licensing bodies offer specific "webcasting licenses" to those wishing to carry out Internet broadcasting using copyright material.

Webcasting is also used extensively in the commercial sector for investor relations presentations (such as Annual General Meetings), in E-learning (to transmit seminars), and for related communications activities. However, webcasting does not bear much, if any, relationship to the idea of web conferencing which is designed for many-to-many interaction. The ability to webcast using cheap/accessible technology has allowed independent media to flourish. There are many notable independent shows that broadcast regularly online. Often produced by average citizens in their homes they cover many interests and topics. Webcasts relating to computers, technology, and news are particularly popular and many new shows are added regularly.

Peercasting is a method of multicasting streams, usually audio and/or video, to the Internet via peer-to-peer technology. It can be used for commercial, independent, and amateur multicasts. Unlike traditional IP Multicast, peercasting can facilitate on-demand content delivery.
It usually works by having peers automatically relay a stream to a couple more peers, and the P2P network helping peers find a relay for a specified stream to connect to. However, this suffers from poor quality of service during times when relays disconnect or peers need to switch to a different relay.

Another solution used is minute swarming, wherein a live stream is broken up into minute length files that are swarmed via P2P software such as BitTorrent, Coral, or Dijjer. However, this suffers from excessive overhead for the formation of a new swarm every minute.
A new solution is to stripe a live stream into multiple substreams, akin to RAID striping. Forward error correction and timing information is applied to these substreams such that the original stream can be reformed using at least all but one of the substreams (fountain codes are an efficient way to make and combine the substreams). In turn, these streams are relayed using the first method.

Another solution is to permit clients to connect to a new relay and resume streaming from where they left off by their old relay. Relays would retain a back buffer to permit clients to resume streaming from anywhere within the range of said buffer. This would essentially be an extension to the Icecast protocol.

Interactivity
Interactivity Interfaces, Tools, games, diagrams, presentations, neat features.
While catchy graphics can make your site attractive and get the viewer's interest, some graphics may have a negative effect on your site. For every 10 seconds it takes for your graphics to load before your page contents can be seen, you risk losing 20% of your remaining viewers. The best advice is that before deciding how many graphics to use on your business Web site, consider your audience and their bandwidth connection to the Internet. Some markets still have 56k modems, while higher end demographics use cable modems and DSL connections.

Distributing
We use keyword phrases in your video titles and descriptions as this is how the search engines will index your video. Most videos show up in Google's result pages within 1-2 hours of submission.

Rather than submit your video to every online content site, we can use Tube Mogul or Traffic Geyser for you. Tube Mogul is free and Traffic Geyser is $99 per month.
     

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