decklinkaudiosink: GStreamer Bad Plugins 1.0 Plugins Reference Manual

decklinkaudiosink

decklinkaudiosink — Outputs Audio to a BlackMagic DeckLink Device

Properties

gint	device-number	Read / Write / Construct
gchar *	hw-serial-number	Read
guint64	alignment-threshold	Read / Write
guint64	buffer-time	Read / Write
guint64	discont-wait	Read / Write

Types and Values

struct

GstDecklinkAudioSink

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBaseSink
                    ╰── GstDecklinkAudioSink

Description

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

Sample pipeline

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gst-launch-1.0 \
  videotestsrc ! decklinkvideosink device-number=0 mode=1080p25 \
  audiotestsrc ! decklinkaudiosink device-number=0

Playout a 1080p25 test-video with a test-audio signal to the SDI-Out 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/Sink/Hardware

Element Pads

name	sink
direction	sink
presence	always
details	audio/x-raw, format=(string){ S16LE, S32LE }, channels=(int){ 2, 8, 16 }, rate=(int)48000, layout=(string)interleaved

Functions

Types and Values

struct GstDecklinkAudioSink

struct GstDecklinkAudioSink;

Property Details

The `“device-number”` property

  “device-number”            gint

Output device instance to use.

Flags: Read / Write / Construct

Allowed values: >= 0

Default value: 0

The `“hw-serial-number”` property

  “hw-serial-number”         gchar *

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

Flags: Read

Default value: NULL

The `“alignment-threshold”` property

  “alignment-threshold”      guint64

Timestamp alignment threshold in nanoseconds.

Flags: Read / Write

Allowed values: <= 18446744073709551614

Default value: 40000000

The `“buffer-time”` property

  “buffer-time”              guint64

Size of audio buffer in microseconds, this is the minimum latency that the sink reports.

Flags: Read / Write

Default value: 50000

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