Linux Kernel in a Nutshell

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VIDEO_DEV — Video For Linux

This option enables support for audio/video capture and overlay devices and FM radio cards. The exact capabilities of each device vary.

The kernel includes support for the new Video for Linux Two API, (V4L2) as well as the original system. Drivers and applications need to be rewritten to use V4L2, but drivers for popular cards and applications for most video capture functions already exist.

Additional info and docs are available at http://linuxtv.org. Documentation for V4L2 is also available at http://bytesex.org/v4l.

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