V4L2based

V4L2, or Video for Linux 2, is a collection of device drivers and an API for supporting realtime video capture on Linux systems. It was developed as an improvement over the original V4L (Video for Linux) framework, which was found to be insufficient for modern video capture requirements. V4L2 was introduced in the Linux kernel version 2.5.44, released in January 2003.

The V4L2 API provides a standardized interface for video capture devices, allowing applications to interact with these devices in a consistent manner. It supports a wide range of video capture and output devices, including webcams, TV tuners, and video capture cards. The API is designed to be flexible and extensible, allowing for the addition of new features and devices as technology advances.

V4L2-based applications can be found in various domains, including multimedia, security, and broadcasting. They leverage the V4L2 API to capture, process, and transmit video data in real-time. Some popular V4L2-based applications include video conferencing tools, surveillance systems, and digital signage software.

The V4L2 framework is maintained by the Linux kernel community and is continually updated to support new hardware and software technologies. It is an essential component of the Linux ecosystem, enabling a wide range of video capture and processing applications.