Video4Linux or V4L is a
about v4l + v4l2
- is the original video capture/overlay API of the linux kernel. It appeared late the 2.1.x development cycle in the linux kernel.
- is the second generation of the video4linux API which fixes a number of design bugs of the first version. It was integrated into the standard kernel in 2.5.x.
Althrough v4l2 is integrated into the standard kernel a number of drivers don't support the new v4l2 API yet, so we'll likely see v4l and v4l2 coexist for some time.
v4l maintainer withdraw announcement
video4linux mailing list
v4l wiki: main page
wiki: how to submit v4l patches
Anatomy of a v4l driver