decklinkaudiosrc: GStreamer Bad Plugins 1.0 Plugins Reference Manual

decklinkaudiosrc

decklinkaudiosrc — Inputs Audio from a BlackMagic DeckLink Device

Properties

guint64	alignment-threshold	Read / Write
guint	buffer-size	Read / Write
GstDecklinkAudioConnection	connection	Read / Write / Construct
gint	device-number	Read / Write / Construct
guint64	discont-wait	Read / Write
GstDecklinkAudioChannels	channels	Read / Write / Construct
gchar *	hw-serial-number	Read

Types and Values

struct

GstDecklinkAudioSrc

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBaseSrc
                    ╰── GstPushSrc
                        ╰── GstDecklinkAudioSrc

Description

Capture Video and Audio from a BlackMagic DeckLink Device. Can only be used in conjunction with decklinkvideosink.

Sample pipeline

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gst-launch-1.0 \
  decklinkvideosrc device-number=0 mode=1080p25 ! autovideosink \
  decklinkaudiosrc device-number=0 ! autoaudiosink

Capturing 1080p25 video and audio from the SDI-In of Card 0. Devices are numbered starting with 0.

Synopsis

Element Information

plugin	decklink
author	David Schleef <ds@entropywave.com>, Sebastian Dröge <sebastian@centricular.com>
class	Audio/Source/Hardware

Element Pads

name	src
direction	source
presence	always
details	audio/x-raw, format=(string){ S16LE, S32LE }, channels=(int)2, rate=(int)48000, layout=(string)interleaved
	audio/x-raw, format=(string){ S16LE, S32LE }, channels=(int){ 8, 16 }, channel-mask=(bitmask)0x0000000000000000, rate=(int)48000, layout=(string)interleaved

Functions

Types and Values

struct GstDecklinkAudioSrc

struct GstDecklinkAudioSrc;

Property Details

The `“alignment-threshold”` property

  “alignment-threshold”      guint64

Timestamp alignment threshold in nanoseconds.

Flags: Read / Write

Allowed values: <= 18446744073709551614

Default value: 40000000

The `“buffer-size”` property

  “buffer-size”              guint

Size of internal buffer in number of video frames.

Flags: Read / Write

Allowed values: [1,G_MAXINT]

Default value: 5

The `“connection”` property

  “connection”               GstDecklinkAudioConnection

Audio input connection to use.

Flags: Read / Write / Construct

Default value: Automatic

The `“device-number”` property

  “device-number”            gint

Output device instance to use.

Flags: Read / Write / Construct

Allowed values: >= 0

Default value: 0

The `“discont-wait”` property

  “discont-wait”             guint64

Window of time in nanoseconds to wait before creating a discontinuity.

Flags: Read / Write

Allowed values: <= 18446744073709551614

Default value: 1000000000

The `“channels”` property

  “channels”                 GstDecklinkAudioChannels

Audio channels.

Flags: Read / Write / Construct

Default value: 2 Channels

The `“hw-serial-number”` property

  “hw-serial-number”         gchar *

The serial number (hardware ID) of the Decklink card.

Flags: Read

Default value: NULL