video.rst (1278B)
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2 3.. _dvb_video: 4 5####################### 6Digital TV Video Device 7####################### 8 9The Digital TV video device controls the MPEG2 video decoder of the Digital 10TV hardware. It can be accessed through **/dev/dvb/adapter0/video0**. Data 11types and ioctl definitions can be accessed by including 12**linux/dvb/video.h** in your application. 13 14Note that the Digital TV video device only controls decoding of the MPEG video 15stream, not its presentation on the TV or computer screen. On PCs this 16is typically handled by an associated video4linux device, e.g. 17**/dev/video**, which allows scaling and defining output windows. 18 19Some Digital TV cards don't have their own MPEG decoder, which results in the 20omission of the audio and video device as well as the video4linux 21device. 22 23The ioctls that deal with SPUs (sub picture units) and navigation 24packets are only supported on some MPEG decoders made for DVD playback. 25 26These ioctls were also used by V4L2 to control MPEG decoders implemented 27in V4L2. The use of these ioctls for that purpose has been made obsolete 28and proper V4L2 ioctls or controls have been created to replace that 29functionality. 30 31 32.. toctree:: 33 :maxdepth: 1 34 35 video_types 36 video_function_calls