Screencast

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Not to be confused with Screenshot or Screencam.
Look up screencast in Wiktionary, the free dictionary.

A screencast is a digital recording of computer screen output, also known as a video screen capture, often containing audio narration. The term screencast compares with the related term screenshot; whereas screenshot is a picture of a computer screen, a screencast is essentially a movie of the changes over time that a user sees on a computer screen, enhanced with audio narration.

Contents

[edit] Origin of the term

In 2004, columnist Jon Udell invited readers of his blog to propose names for the emerging genre.[1] Udell selected the term "screencast", which was proposed by both Joseph McDonald and Deeje Cooley.[2]

The terms "screencast" and "Screencam" are often used interchangeably,[3][4] due to the market influence of ScreenCam as an screencasting product of early 1990s.[5] ScreenCam, however, is a federal trademark in the United States, whereas screencast is not trademarked and has established use in publications as part of Internet and Computing vernacular.[6][7]

[edit] Uses

Question book-new.svg This section does not cite any references or sources. (November 2011)
Adjusting photo with levels.ogg
An example of screencasting: A video showing how to change a photo using "levels" in GIMP.

Screencasts can help demonstrate and teach the use of software features. Creating a screencast helps software developers show off their work. Educators may also use screencasts as another means of integrating technology into the curriculum. Students can record video and audio as they demonstrate the proper procedure to solve a problem on an interactive whiteboard.

Screencasts are useful tools for ordinary software users as well: They help filing report bugs in which the screencasts take the place of potentially unclear written explanations; they help showing others how a given task is accomplished in a specific software environment.

Organizers of seminars may choose to routinely record complete seminars and make them available to all attendees for future reference and/or sell these recordings to people who cannot afford the fee of the live seminar or do not have the time to attend it. This will generate an additional revenue stream for the organizers and makes the knowledge available to a broader audience.

This strategy of recording seminars is already widely used in fields where using a simple video camera or audio recorder is sufficient to make a useful recording of a seminar. Computer-related seminars need high quality and easily readable recordings of screen contents which is usually not achieved by a video camera that records the desktop.

[edit] Hardware

An alternative solution for capturing a screencast is the use of a hardware RGB or DVI frame grabber card. This approach does not have the OpenGL limitations mentioned above, and places the burden of the recording and compression process on a machine separate from the one generating the visual material being captured.[8]

[edit] See also

[edit] References

  1. ^ Udell, Jon (2004-11-15). "Jon Udell: Name that genre". InfoWorld. Archived from the original on 2009-07-10. http://jonudell.net/udell/2004-11-15-name-that-genre.html. Retrieved 2008-06-12. 
  2. ^ Udell, Jon (2004-11-17). "Jon Udell: Name that genre: screencast". InfoWorld. Archived from the original on 2009-07-10. http://jonudell.net/udell/2004-11-17-name-that-genre-screencast.html. Retrieved 2008-06-12. 
  3. ^ "Definition of ScreenCam". PC Magazine: Encyclopedia. Ziff Davis. 2010-05-09. http://www.pcmag.com/encyclopedia_term/0,2542,t=ScreenCam&i=50922,00.asp. Retrieved 2010-12-30. 
  4. ^ "Definition of Screencast". PC Magazine: Encyclopedia. Ziff Davis. 2010-05-09. http://www.pcmag.com/encyclopedia_term/0,2542,t=screencast&i=60127,00.asp. Retrieved 2010-12-30. 
  5. ^ McCracken, Harry (1994-05-09). "Lotus' ScreenCam is Easy Multimedia". InfoWorld (InfoWorld Media Group) 16 (19): 121. ISSN 0199-6649. http://books.google.com/books?id=gzgEAAAAMBAJ&pg=PA121&dq=lotus+screencam&hl=en&ei=vm0aTaqSE4i9nAfe87zODg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC4Q6AEwAA#v=onepage&q=lotus%20screencam&f=false. Retrieved 2010-12-28. 
  6. ^ Braun, Linda (2007). Listen up! Podcasting for Schools and Libraries. Medford, New Jersey: Information Today, Inc. ISBN 978-1-57387-304-8. 
  7. ^ Notess, Greg (2006). Teaching Web Search Skills. Medford, New Jersey: Information Today. ISBN 978-1-57387-267-6. 
  8. ^ "Automate Video Capture for Screencasting". http://www.epiphan.com/solutions_new/?arid=46. 

[edit] Further reading

Wikibooks has a book on the topic of
Wikimedia Commons has media related to: Screencast videos
  1. Udell, Jon (16 November 2005). "What Is Screencasting". O'Reilly Digital Media. O'Reilly. http://digitalmedia.oreilly.com/pub/a/oreilly/digitalmedia/2005/11/16/what-is-screencasting.html?page=1. Retrieved 7 December 2010. 
  2. Christian (24 September 2010). "Guide: Recording your Linux desktop with ffmpeg". www.technotes.se — Technical guides and discussions. http://www.technotes.se/?p=28. Retrieved 7 December 2010. 
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