v4l2src

v4l2src — Reads frames from a video4linux2 (BT8x8) device

Synopsis

                    GstV4l2Src;

Object Hierarchy

  GObject
   +----GstObject
         +----GstElement
               +----GstBaseSrc
                     +----GstPushSrc
                           +----GstV4l2Src

Implemented Interfaces

GstV4l2Src implements GstURIHandler, GstImplementsInterface, GstTuner, GstColorBalance, GstVideoOrientation and GstPropertyProbe.

Properties

  "device"                   gchar*                : Read / Write
  "device-name"              gchar*                : Read
  "flags"                    GstV4l2DeviceTypeFlags  : Read
  "queue-size"               guint                 : Read / Write
  "always-copy"              gboolean              : Read / Write
  "device-fd"                gint                  : Read

Description

v4l2src can be used to capture video from v4l2 devices, like webcams and tv cards.

Example launch lines

gst-launch v4l2src ! xvimagesink

This pipeline shows the video captured from /dev/video0 tv card and for webcams.

gst-launch v4l2src ! jpegdec ! xvimagesink

This pipeline shows the video captured from a webcam that delivers jpeg images.

Details

GstV4l2Src

typedef struct _GstV4l2Src GstV4l2Src;

Opaque object.

Property Details

The `"device"` property

  "device"                   gchar*                : Read / Write

Device location.

Default value: "/dev/video0"

The `"device-name"` property

  "device-name"              gchar*                : Read

Name of the device.

Default value: NULL

The `"flags"` property

  "flags"                    GstV4l2DeviceTypeFlags  : Read

Device type flags.

The `"queue-size"` property

  "queue-size"               guint                 : Read / Write

Number of buffers to be enqueud in the driver in streaming mode.

Allowed values: [1,16]

Default value: 2

The `"always-copy"` property

  "always-copy"              gboolean              : Read / Write

If the buffer will or not be used directly from mmap.

Default value: TRUE

The `"device-fd"` property

  "device-fd"                gint                  : Read

File descriptor of the device.

Allowed values: >= G_MAXULONG

Default value: -1

			GStreamer Good Plugins 0.10 Plugins Reference Manual
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