cutter

cutter — Audio Cutter to split audio into non-silent bits

Synopsis

                    GstCutter;

Object Hierarchy

  GObject
   +----GstObject
         +----GstElement
               +----GstCutter

Properties

  "leaky"                    gboolean              : Read / Write
  "pre-length"               guint64               : Read / Write
  "run-length"               guint64               : Read / Write
  "threshold"                gdouble               : Read / Write
  "threshold-dB"             gdouble               : Read / Write

Description

Analyses the audio signal for periods of silence. The start and end of silence is signalled by bus messages named "cutter". The message's structure contains two fields:

  • GstClockTime "timestamp": the timestamp of the buffer that triggered the message.

  • gboolean "above": TRUE for begin of silence and FALSE for end of silence.

Example launch line

gst-launch -m filesrc location=foo.ogg ! decodebin ! audioconvert ! cutter ! autoaudiosink
Show cut messages.

Synopsis

Element Information

plugin cutter
author Thomas Vander Stichele <thomas at apestaart dot org>
class Filter/Editor/Audio

Element Pads

name sink
direction sink
presence always
details audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int){ 8, 16 }, depth=(int){ 8, 16 }, signed=(boolean)true
name src
direction source
presence always
details audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int){ 8, 16 }, depth=(int){ 8, 16 }, signed=(boolean)true

Details

GstCutter

typedef struct _GstCutter GstCutter;

Property Details

The "leaky" property

  "leaky"                    gboolean              : Read / Write

do we leak buffers when below threshold ?.

Default value: FALSE

The "pre-length" property

  "pre-length"               guint64               : Read / Write

Length of pre-recording buffer (in nanoseconds).

Default value: 0

The "run-length" property

  "run-length"               guint64               : Read / Write

Length of drop below threshold before cut_stop (in nanoseconds).

Default value: 0

The "threshold" property

  "threshold"                gdouble               : Read / Write

Volume threshold before trigger.

Default value: 0

The "threshold-dB" property

  "threshold-dB"             gdouble               : Read / Write

Volume threshold before trigger (in dB).

Default value: 0

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