WIKIBOOKS
DISPONIBILI
?????????

ART
- Great Painters
BUSINESS&LAW
- Accounting
- Fundamentals of Law
- Marketing
- Shorthand
CARS
- Concept Cars
GAMES&SPORT
- Videogames
- The World of Sports

COMPUTER TECHNOLOGY
- Blogs
- Free Software
- Google
- My Computer

- PHP Language and Applications
- Wikipedia
- Windows Vista

EDUCATION
- Education
LITERATURE
- Masterpieces of English Literature
LINGUISTICS
- American English

- English Dictionaries
- The English Language

MEDICINE
- Medical Emergencies
- The Theory of Memory
MUSIC&DANCE
- The Beatles
- Dances
- Microphones
- Musical Notation
- Music Instruments
SCIENCE
- Batteries
- Nanotechnology
LIFESTYLE
- Cosmetics
- Diets
- Vegetarianism and Veganism
TRADITIONS
- Christmas Traditions
NATURE
- Animals

- Fruits And Vegetables



ARTICLES IN THE BOOK

  1. Adobe Reader
  2. Adware
  3. Altavista
  4. AOL
  5. Apple Macintosh
  6. Application software
  7. Arrow key
  8. Artificial Intelligence
  9. ASCII
  10. Assembly language
  11. Automatic translation
  12. Avatar
  13. Babylon
  14. Bandwidth
  15. Bit
  16. BitTorrent
  17. Black hat
  18. Blog
  19. Bluetooth
  20. Bulletin board system
  21. Byte
  22. Cache memory
  23. Celeron
  24. Central processing unit
  25. Chat room
  26. Client
  27. Command line interface
  28. Compiler
  29. Computer
  30. Computer bus
  31. Computer card
  32. Computer display
  33. Computer file
  34. Computer games
  35. Computer graphics
  36. Computer hardware
  37. Computer keyboard
  38. Computer networking
  39. Computer printer
  40. Computer program
  41. Computer programmer
  42. Computer science
  43. Computer security
  44. Computer software
  45. Computer storage
  46. Computer system
  47. Computer terminal
  48. Computer virus
  49. Computing
  50. Conference call
  51. Context menu
  52. Creative commons
  53. Creative Commons License
  54. Creative Technology
  55. Cursor
  56. Data
  57. Database
  58. Data storage device
  59. Debuggers
  60. Demo
  61. Desktop computer
  62. Digital divide
  63. Discussion groups
  64. DNS server
  65. Domain name
  66. DOS
  67. Download
  68. Download manager
  69. DVD-ROM
  70. DVD-RW
  71. E-mail
  72. E-mail spam
  73. File Transfer Protocol
  74. Firewall
  75. Firmware
  76. Flash memory
  77. Floppy disk drive
  78. GNU
  79. GNU General Public License
  80. GNU Project
  81. Google
  82. Google AdWords
  83. Google bomb
  84. Graphics
  85. Graphics card
  86. Hacker
  87. Hacker culture
  88. Hard disk
  89. High-level programming language
  90. Home computer
  91. HTML
  92. Hyperlink
  93. IBM
  94. Image processing
  95. Image scanner
  96. Instant messaging
  97. Instruction
  98. Intel
  99. Intel Core 2
  100. Interface
  101. Internet
  102. Internet bot
  103. Internet Explorer
  104. Internet protocols
  105. Internet service provider
  106. Interoperability
  107. IP addresses
  108. IPod
  109. Joystick
  110. JPEG
  111. Keyword
  112. Laptop computer
  113. Linux
  114. Linux kernel
  115. Liquid crystal display
  116. List of file formats
  117. List of Google products
  118. Local area network
  119. Logitech
  120. Machine language
  121. Mac OS X
  122. Macromedia Flash
  123. Mainframe computer
  124. Malware
  125. Media center
  126. Media player
  127. Megabyte
  128. Microsoft
  129. Microsoft Windows
  130. Microsoft Word
  131. Mirror site
  132. Modem
  133. Motherboard
  134. Mouse
  135. Mouse pad
  136. Mozilla Firefox
  137. Mp3
  138. MPEG
  139. MPEG-4
  140. Multimedia
  141. Musical Instrument Digital Interface
  142. Netscape
  143. Network card
  144. News ticker
  145. Office suite
  146. Online auction
  147. Online chat
  148. Open Directory Project
  149. Open source
  150. Open source software
  151. Opera
  152. Operating system
  153. Optical character recognition
  154. Optical disc
  155. output
  156. PageRank
  157. Password
  158. Pay-per-click
  159. PC speaker
  160. Peer-to-peer
  161. Pentium
  162. Peripheral
  163. Personal computer
  164. Personal digital assistant
  165. Phishing
  166. Pirated software
  167. Podcasting
  168. Pointing device
  169. POP3
  170. Programming language
  171. QuickTime
  172. Random access memory
  173. Routers
  174. Safari
  175. Scalability
  176. Scrollbar
  177. Scrolling
  178. Scroll wheel
  179. Search engine
  180. Security cracking
  181. Server
  182. Simple Mail Transfer Protocol
  183. Skype
  184. Social software
  185. Software bug
  186. Software cracker
  187. Software library
  188. Software utility
  189. Solaris Operating Environment
  190. Sound Blaster
  191. Soundcard
  192. Spam
  193. Spamdexing
  194. Spam in blogs
  195. Speech recognition
  196. Spoofing attack
  197. Spreadsheet
  198. Spyware
  199. Streaming media
  200. Supercomputer
  201. Tablet computer
  202. Telecommunications
  203. Text messaging
  204. Trackball
  205. Trojan horse
  206. TV card
  207. Unicode
  208. Uniform Resource Identifier
  209. Unix
  210. URL redirection
  211. USB flash drive
  212. USB port
  213. User interface
  214. Vlog
  215. Voice over IP
  216. Warez
  217. Wearable computer
  218. Web application
  219. Web banner
  220. Web browser
  221. Web crawler
  222. Web directories
  223. Web indexing
  224. Webmail
  225. Web page
  226. Website
  227. Wiki
  228. Wikipedia
  229. WIMP
  230. Windows CE
  231. Windows key
  232. Windows Media Player
  233. Windows Vista
  234. Word processor
  235. World Wide Web
  236. Worm
  237. XML
  238. X Window System
  239. Yahoo
  240. Zombie computer
 



MY COMPUTER
This article is from:
http://en.wikipedia.org/wiki/Podcasting

All text is available under the terms of the GNU Free Documentation License: http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License 

Podcast

From Wikipedia, the free encyclopedia

(Redirected from Podcasting)
An orange square with waves was introduced by Mozilla Firefox to indicate that an RSS feed is present on a webpage.  By mutual agreement, the same icon has also been adopted by Microsoft Internet Explorer and Opera.
An orange square with waves was introduced by Mozilla Firefox to indicate that an RSS feed is present on a webpage. By mutual agreement, the same icon has also been adopted by Microsoft Internet Explorer and Opera.

A podcast is a media file that is distributed by subscription (paid or unpaid) over the Internet using syndication feeds, for playback on mobile devices and personal computers[1]. Like 'radio', it can mean both the content and the method of syndication. The latter may also be termed podcasting. The host or author of a podcast is often called a podcaster.

Though podcasters' web sites may also offer direct download or streaming of their content, a podcast is distinguished from other digital audio formats by its ability to be downloaded automatically using software capable of reading feed formats such as RSS or Atom.

History

Main article: History of podcasting

The concept of podcasting was suggested as early as 2000 and its technical components were available by 2001, then implemented in the program Radio Userland[1]. In 2003 regular podcasts started showing up on well-known Web sites and software support spread.

Name

The editors of the New Oxford American Dictionary declared "podcasting" the 2005 word of the year, defining the term as "a digital recording of a radio broadcast or similar program, made available on the Internet for downloading to a personal audio player".[2]

The name has aroused some controversy for implying one needs an iPod to listen to podcasts. In fact, a podcast can be any sort of audio file. Some alternate names have been proposed such as the more neutral "netcasting" and "blogcasting". Some of these name-changing efforts were the result of confusion over cease-and-desist letters sent by Apple to companies using terms similar to 'iPod' in their product names[3]. However, the Apple Trademark Department has stated that Apple does not license the term 'podcast' or object to its generic usage[4]. None of the alternate terms has yet received as wide a use as 'podcast.'

Mechanics

The publish/subscribe model of podcasting is a version of push technology, in that the information provider chooses which files to offer in a feed and the subscriber chooses among available feed channels. While the user is not "pulling" individual files from the Web, there is a strong "pull" aspect in that the receiver is free to subscribe to (or unsubscribe from) a vast array of channels. Earlier Internet "push" services (e.g., PointCast) allowed a much more limited selection of content.

Podcasting is an automatic mechanism whereby multimedia computer files are transferred from a server to a client, which pulls down XML files containing the Internet addresses of the media files. In general, these files contain audio or video, but also could be images, text, PDF, or any file type.

The content provider begins by making a file (for example, an MP3 audio file) available on the Internet. This is usually done by posting the file on a publicly available webserver; however, BitTorrent trackers also have been used, and it is not technically necessary that the file be publicly accessible. The only requirement is that the file be accessible through some known URI (a general-purpose Internet address). This file is often referred to as one episode of a podcast.

The content provider then acknowledges the existence of that file by referencing it in another file known as the feed. The feed is a list of the URLs by which episodes of the show may be accessed. This list is usually published in RSS format (although Atom can also be used), which provides other information, such as publish date, titles, and accompanying text descriptions of the series and each of its episodes. The feed may contain entries for all episodes in the series, but is typically limited to a short list of the most recent episodes, as is the case with many news feeds. Standard podcasts consist of a feed from one author. More recently multiple authors have been able to contribute episodes to a single podcast feed using concepts such as public podcasting and social podcasting.

The content provider posts the feed on a webserver. The location at which the feed is posted is expected to be permanent. This location is known as the feed URI (or, perhaps more often, feed URL). The content provider makes this feed URI known to the intended audience.

A consumer uses a type of software known as an aggregator, sometimes called a podcatcher or podcast receiver, to subscribe to and manage their feeds.

A podcast specific aggregator is usually an always-on program which starts when the computer is started and runs in the background. They work exactly like any newsreader someone would use to manage other web subscriptions. It manages a set of feed URIs added by the user and downloads each at a specified interval, such as every two hours. If the feed data has substantively changed from when it was previously checked (or if the feed was just added to the application's list), the program determines the location of the most recent item and automatically downloads it to the user's computer. Interestingly, it is estimated that perhaps only 20% of podcasts are actually consumed on portable media players; 80% are consumed on the PC onto which they are downloaded, or deleted from the PC without being listened to.[5] Some applications, such as iTunes, also automatically make the newly downloaded episodes available to a user's portable media player.

The downloaded episodes can then be played, replayed, or archived as with any other computer file.

To conserve bandwidth, users may opt to search for content using an online podcast directory. Some directories allow people to listen online and initially become familiar with the content provided from an RSS feed before deciding to subscribe. For most broadband users, bandwidth is generally not a major consideration; it could fairly be stated that podcasting itself is a technology that came with the increases in global bandwidth and broadband popularity.

Other uses

Main article: Uses of podcasting

Podcasting's initial appeal was to allow individuals to distribute their own "radio shows," but the system quickly became used in a wide variety of other ways, including distribution of school lessons [6], official and unofficial audio tours of museums, conference meeting alerts and updates, and by police departments to distribute public safety messages. The Pediaphon project (Wikipedia:Pediaphon) provides dynamically generated podcasts of all English and German language Wikipedia articles.

See also

General podcasting community

  • Autocasting (the automatic generation of podcasts from text-only sources)
  • Blogcasting (the blogging podcast)
  • Social media (for other forms of consumer created content)
  • Streaming media
  • User-generated content

Podcasting distribution networks

  • Content Delivery Network (common service for delivering podcasts)
  • MMS podcast (mobile podcasting and viewing through mobile phones using MMS)
  • Mobilecast (mobile podcasting and listening through mobile phones)
  • Podcasting by traditional broadcasters www.publicpodcaster.com
  • Narrowcasting (podcasting is a form of narrowcasting)
  • Peercasting (peercasting allows live streams to be redistributed by the viewers/listener, greatly reducing bandwidth needs for the originating broadcaster
  • VoiceCast (podcast delivery through a telephone call)

Audio podcasting

  • MP3 blog (podcasting single song downloads)
  • Phonecasting (creating podcasts using a phone)
  • Skypecasting (different meanings: "hosting a skypecast session" or "creating podcasts by recording a Skype conference call")
  • Soundseeing tour (podcast utilizing ambient noise and descriptions)
  • Webcasting Live interactive audio

Video image podcasting

  • Photofeed (image podcasting)
  • Video podcast vodcast - vodcasting (video podcasting)
  • Screencast - screen capture video recording

External links

Listen to this article (info)
Spoken Wikipedia
This audio file was created from an article revision dated 2005-12-05, and may not reflect subsequent edits to the article. (Audio help)
More spoken articles
Wikibooks
Wikibooks has a book on the topic of
Podcasting
  • Creative Commons Podcasting Legal Guide

Lists of podcast directories:

  • Podcast 411 Directory of Directories
  • Podcasting News' List of Podcast Directories
  • iPodder.org OPML Directory Listings
  • podcast.opml.org OPML Directory

Notes and references

  1. ^ http://technology.guardian.co.uk/weekly/story/0,16376,1683937,00.html
  2. ^ Oxford University Press, 2005-12-05 Podcast is word of the year
  3. ^ http://www.twit.tv/2006/09/22/a_cast_by_any_other_name
  4. ^ http://globalgeek.thepodcastnetwork.com/2006/11/29/in-writing-apple-does-not-licence-the-term-podcast/
  5. ^ Dixon, Colin; Greeson, Michael. "Recasting the Concept of Podcasting: Part I." TDG Research. 3-23-06. Accessed 8-10-06.
  6. ^ http://www.map100.com/mapinteresting.php/podcasts-increasing-in-popularity/
Retrieved from "http://en.wikipedia.org/wiki/Podcast"