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Screen Recording
A screencast is a digital recording of computer screen output, also known as a video screen capture or a screen recording, often containing audio narration. The term ''screencast'' compares with the related term ''screenshot''; whereas screenshot generates a single picture of a computer screen, a screencast is essentially a movie of the changes over time that a user sees on a computer screen, that can be enhanced with audio narration and captions. Etymology In 2004, columnist Jon Udell invited readers of his blog to propose names for the emerging genre. Udell selected the term "screencast", which was proposed by both Joseph McDonald and Deeje Cooley. The terms "screencast" and "screencam" are often used interchangeably, due to the market influence of ScreenCam as a screencasting product of the early 1990s. 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 computi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer
A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as Computer program, programs. These programs enable computers to perform a wide range of tasks. A computer system is a nominally complete computer that includes the Computer hardware, hardware, operating system (main software), and peripheral equipment needed and used for full operation. This term may also refer to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of Programmable logic controller, industrial and Consumer electronics, consumer products use computers as control systems. Simple special-purpose devices like microwave ovens and remote controls are included, as are factory devices like industrial robots and computer-aided design, as well as general-purpose devi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Capture
Video capture is the process of converting an analog video signal—such as that produced by a video camera, DVD player, or television tuner—to digital video and sending it to local storage or to external circuitry. The resulting digital data are referred to as a ''digital video stream'', or more often, simply ''video stream''. Depending on the application, a video stream may be recorded as computer files, or sent to a video display, or both. Devices Special electronic circuitry is required to capture video from analog video sources. At the system level this function is typically performed by a dedicated video capture device. Such devices typically employ integrated circuit video decoders to convert incoming video signals to a standard digital video format, and additional circuitry to convey the resulting digital video to local storage or to circuitry outside the video capture device, or both. Depending on the device, the resulting video stream may be conveyed to external circui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Vision Mixer
In video production, a software vision mixer is a piece of software which is able to switch between various video sources. In some cases, this software is also able to composite (combine) video from various sources. It essentially acts as a software version of a hardware vision mixer. In contrast to a hardware vision mixer, a software vision mixer allows for a larger number of channels, connection types, and transition effects, and allows for greater flexibility of computer A computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations ( computation) automatically. Modern digital electronic computers can perform generic sets of operations known as programs. These prog ...-based content integration, text and graphics overlay, and media programming. Another difference between software and hardware vision mixers is that software mixers are limited by the computer's performance. Software vision mixers are generally less expensive th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screenshot
screenshot (also known as screen capture or screen grab) is a digital image that shows the contents of a computer display. A screenshot is created by the operating system or software running on the device powering the display. Additionally, screenshots can be captured by an external camera, using photography to capture contents on the screen. Screenshot techniques Digital techniques The first screenshots were created with the first interactive computers around 1960. Through the 1980s, computer operating systems did not universally have built-in functionality for capturing screenshots. Sometimes text-only screens could be dumped to a text file, but the result would only capture the content of the screen, not the appearance, nor were graphics screens preservable this way. Some systems had a BSAVE command that could be used to capture the area of memory where screen data was stored, but this required access to a BASIC prompt. Systems with composite video output could be co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slidecast
A podcast is a program made available in digital format for download over the Internet. For example, an episodic series of digital audio or video files that a user can download to a personal device to listen to at a time of their choosing. Streaming applications and podcasting services provide a convenient and integrated way to manage a personal consumption queue across many podcast sources and playback devices. There also exist podcast search engines, which help users find and share podcast episodes. A podcast series usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. Discussion and content within a podcast can range from carefully scripted to completely improvised. Podcasts combine elaborate and artistic sound production with thematic concerns ranging from scientific research to slice-of-life journalism. Many podcast series provide an associated website with links and show notes, guest biographies, transcripts, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Online Lecture
An online lecture is an educational lecture designed to be posted online. Lectures are recorded to video, audio or both, then uploaded and made viewable on a designated site. Students may go to a certain designated site to view the lecture online at a time which is convenient for them. The lecture may also be available for live viewing online at the time it is recorded. Traditionally, vocal education is possible only when the teacher and the pupil are together in the same room, where the teacher passes on the information in the same vicinity of the student. The development of the online lecture makes it possible so that the teacher and student no longer have to be in the same vicinity to teach and learn, respectively. There are certain advantages to online lecturing. Students may access online lectures posted on their designated websites anywhere in the world, at any time they wish, as long as they have an internet connection. They can also be repeated for the sake of note taking. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comparison Of Screencasting Software
This page provides a comparison of notable screencasting software, used to record activities on the computer screen. This software is commonly used for desktop recording, gameplay recording and video editing. Screencasting software is typically limited to streaming and recording desktop activity alone, in contrast with a software vision mixer, which has the capacity to mix and switch the output between various input streams. Comparison by specification Comparison by features The following table compares features of screencasting software. The table has seven fields, as follows: # Product name: Product's name; sometime includes edition if a certain edition is targeted # Audio: Specifies whether the product supports recording audio commentary on the video # Entire desktop: Specifies whether product supports recording the entire desktop # OpenGL: Specifies whether the product supports recording from video games and software that employ OpenGL to render digital image # Direc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Searching (film)
''Searching'' is a 2018 mystery thriller film directed by Aneesh Chaganty in his feature debut, written by Chaganty and Sev Ohanian and produced by Timur Bekmambetov. Set entirely on computer screens and smartphones, the film follows a father ( John Cho) trying to find his missing 16-year-old daughter (Michelle La) with the help of a police detective (Debra Messing). This was the first mainstream Hollywood thriller headlined by an Asian-American actor. A co-production between the United States and Russia, the film premiered at the Sundance Film Festival on January 21, 2018, and was theatrically released in the United States on August 24, 2018, by Sony Pictures Releasing. The film was a financial and critical success, grossing over $75 million worldwide against a $880,000 budget and receiving praise for its direction, acting, unique visual presentation and unpredictable storyline. At the Independent Spirit Awards, Cho was nominated for Best Male Lead. A sequel, ''Missing'', is s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dark Web
The dark web is the World Wide Web content that exists on ''darknets'': overlay networks that use the Internet but require specific software, configurations, or authorization to access. Through the dark web, private computer networks can communicate and conduct business anonymously without divulging identifying information, such as a user's location. The dark web forms a small part of the deep web, the part of the Web not indexed by web search engines, although sometimes the term ''deep web'' is mistakenly used to refer specifically to the dark web. The darknets which constitute the dark web include small, friend-to-friend peer-to-peer networks, as well as large, popular networks such as Tor, Freenet, I2P, and Riffle operated by public organizations and individuals. Users of the dark web refer to the regular web as Clearnet due to its unencrypted nature. The Tor dark web or onionland uses the traffic anonymization technique of onion routing under the network's top-level dom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unfriended
''Unfriended'' is a 2014 computer screen supernatural horror film directed by Levan Gabriadze and produced by Timur Bekmambetov. The first feature film to be entirely set on a computer screen, it is produced in the so-called Screenlife format. The film stars Shelley Hennig, Moses Storm, Renee Olstead, Will Peltz, Jacob Wysocki, and Courtney Halverson as high school students in a Skype conversation which is haunted by a student, played by Heather Sossaman, who was bullied and committed suicide. The film is told almost entirely through a screencast of a MacBook. The film premiered at the Fantasia Festival on July 20, 2014, and was theatrically released by Universal Pictures in the United States on April 17, 2015. The film received mixed reviews from critics and was a massive box-office success, grossing $62 million against a $1 million budget. A sequel, '' Unfriended: Dark Web'', was released in 2018. Plot High school student Laura Barns committed suicide by gunshot after an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frame Grabber
A frame grabber is an electronic device that captures (i.e., "grabs") individual, digital still frames from an analog video signal or a digital video stream. It is usually employed as a component of a computer vision system, in which video frames are captured in digital form and then displayed, stored, transmitted, analyzed, or combinations of these. Historically, frame grabber expansion cards were the predominant way to interface cameras to PCs. Other interface methods have emerged since then, with frame grabbers (and in some cases, cameras with built-in frame grabbers) connecting to computers via interfaces such as USB, Ethernet and IEEE 1394 ("FireWire"). Early frame grabbers typically had only enough memory to store a single digitized video frame, whereas many modern frame grabbers can store multiple frames. Modern frame grabbers often are able to perform functions beyond capturing a single video input. For example, some devices capture audio in addition to video, and so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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