A screencast is a digital recording of computer screen output, also known as a video screen capture, often containing audio narration. A computer is a Machine that manipulates data according to a list of instructions. A narrative or story is a construct created in a suitable format (written spoken poetry prose images song Theater, or Dance) that describes a sequence of Although the term screencast dates from 2004, products such as Lotus ScreenCam were used as early as 1994. Lotus Software (called Lotus Development Corporation before its acquisition by IBM) is a Software company with headquarters in Westford,  Early products produced large files and had limited editing features. More recent products support more compact file formats such as Adobe Flash and have more sophisticated editing features allowing changes in sequence, mouse movement, and audio. Adobe Flash (previously called Shockwave Flash and Macromedia Flash) is a set of Multimedia software created by Macromedia and currently
Just as a screenshot is a picture of a user's screen, a screencast is essentially a movie of what a user sees on their monitor. A screenshot, screen capture, or screen dump is an Image taken by the Computer to record the visible items displayed on the monitor
Screencasts are useful for demonstrating software features. Creating a screencast helps software developers show off their work. Screencasts are a useful tool for ordinary software users as well, to help report bugs (the movie takes the place of potentially unclear written explanations) or to show others how a given task is accomplished in a specific software environment. Screencasts are excellent tools for learning how to use computers, and several podcasts have started to teach computer users how to use software through screencasts. A podcast is a series of audio or Video digital-media files which is distributed over the Internet by syndicated Download
Considering the high cost of instructor / faculty led training and the relative ineffectiveness of typical computer based training (CBT) systems, screencasting is likely to become a very popular technique for imparting high-quality knowledge at a low cost. Electronic learning (or e-Learning or eLearning) is a type of education where the medium of instruction is computer technology
For example, organizers of computer related seminars may choose to routinely record complete seminars and make them available on DVDs to all attendees for future reference and/or sell these recordings to people who cannot afford the fee of the live seminar or don't have time to attend it. DVD (also known as " Digital Versatile Disc " or " Digital Video Disc " - see Etymology)is This will generate an additional revenue stream for organizers of seminars and make the knowledge available to a broader audience, so generating a win-win situation for everybody.
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 achievable by using a video camera to film the desktop which is usually projected onto the wall by a projector.
A drawback of most commercial screencasting programs for the PC is their inability to make videos of OpenGL applications, though Demo Builder, Fraps, and Growler Guncam can cope with this. A personal computer ( PC) is any Computer whose original sales price size and capabilities make it useful for individuals and which is intended to be operated OpenGL ( Open G raphics L ibrary is a standard specification defining a cross-language Cross-platform API for writing applications that produce Fraps (derived from '''Fra'''mes '''p'''er '''s'''econd) is a benchmarking screen capture and real-time video capture utility for DirectX and OpenGL applications Growler Guncam is a video game recording tool
In 2004, columnist Jon Udell invited readers of his blog to propose names for the emerging genre. Jon Udell is an "Evangelist" at Microsoft. Previously he was lead analyst for the InfoWorld Test Center Udell selected the term screencast, which was proposed by both Joseph McDonald and Deeje Cooley. His "Heavy metal umlaut" screencast is a well-known example - which explains how Wikipedia works, illustrating the history of the Heavy metal umlaut wikipedia article. ***************************************************************************************** * * The heavy metal umlaut is the gratuitous or decorative use of an umlaut over letters in the name of a heavy metal band such as
It should be noted that the term "ScreenCam" or "ScreenCam Movie" is sometimes used to refer to the same concept, especially given Lotus/IBM's pioneering work in producing a screen-recording utility back in the 1990s. However, "ScreenCam" is a term originally trademarked by Lotus Corporation and really refers to the name of a software product. The trademark of the term has since changed, and is currently held by a software manufacturer, SmartGuyz, Incorporated, who is producing a software product that in like manner records the screen and allows creation of editable, self-playing movies. Hence the two terms, "ScreenCast" and "ScreenCam", while related, are not interchangeable, as one refers to generic creation and playback of screen movies, while the other refers to a trademarked software product produced by a commercial entity.
Since then, the term has gained widespread use, and the use of screencasts has itself become more popular.
An alternative solution for capturing a screencast is the use of a hardware RGB or DVI frame grabber card. A frame grabber is an electronic device that captures individual digital still frames from an analog video signal or a digital video stream 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. OpenGL ( Open G raphics L ibrary is a standard specification defining a cross-language Cross-platform API for writing applications that produce