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Video4Linux (V4L for short) is a collection of device drivers and an API for supporting realtime video capture on Linux systems. [1] It supports many USB webcams, TV tuners, and related devices, standardizing their output, so programmers can easily add video support to their applications.
Run command with specified security context seq: Prints a sequence of numbers sleep: Delays for a specified amount of time stat: Returns data about an inode: stdbuf: Controls buffering for commands that use stdio stty: Changes and prints terminal line settings tee: Sends output to multiple files test: Evaluates an expression timeout: Run a ...
The first alpha version of OpenCV was released to the public at the IEEE Conference on Computer Vision and Pattern Recognition in 2000, and five betas were released between 2001 and 2005. The first 1.0 version was released in 2006. A version 1.1 "pre-release" was released in October 2008. The second major release of the OpenCV was in October 2009.
For example, when the question "How do you back up a Chromebook" is asked, it is implied to refer to data backup, but instead, shows two hands pushing a Chromebook back to the end of a table. This is followed by the statement, "You don't have to back up a Chromebook," showing how all data is stored on the web. [61]
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.
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 connected to a VCR, and entire screencasts preserved this way. [2]
ChromeOS, sometimes styled as chromeOS and formerly styled as Chrome OS, is a Linux distribution developed and designed by Google. [8] It is derived from the open-source ChromiumOS operating system and uses the Google Chrome web browser as its principal user interface.
An MS-DOS command line, illustrating parsing into command and arguments. A command-line argument or parameter is an item of information provided to a program when it is started. [20] A program can have many command-line arguments that identify sources or destinations of information, or that alter the operation of the program.