Lines Matching +full:video +full:- +full:interface

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
7 Video Output Interface
10 Video output devices encode stills or image sequences as analog video
11 signal. With this interface applications can control the encoding
14 Conventionally V4L2 video output devices are accessed through character
15 device special files named ``/dev/video`` and ``/dev/video0`` to
17 ``/dev/video`` is typically a symbolic link to the preferred video
20 .. note:: The same device file names are used also for video capture devices.
25 Devices supporting the video output interface set the
30 functions they may also support the :ref:`raw VBI output <raw-vbi>`
31 (``V4L2_CAP_VBI_OUTPUT``) interface. At least one of the read/write or
38 Video output devices shall support :ref:`audio output <audio>`,
41 :ref:`streaming parameter <streaming-par>` ioctls as needed. The
42 :ref:`video output <video>` ioctls must be supported by all video
49 former select an area of the video picture where the image will appear,
88 details. Video output devices must implement both the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>`
96 A video output device may support the :ref:`write() function <rw>`