audioconvert

audioconvert

Properties

GstAudioDitherMethod dithering Read / Write
GstAudioNoiseShapingMethod noise-shaping Read / Write

Types and Values

struct GstAudioConvert

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBaseTransform
                    ╰── GstAudioConvert

Description

Audioconvert converts raw audio buffers between various possible formats. It supports integer to float conversion, width/depth conversion, signedness and endianness conversion and channel transformations (ie. upmixing and downmixing), as well as dithering and noise-shaping.

Example launch line

1
 
gst-launch-1.0 -v -m audiotestsrc ! audioconvert ! audio/x-raw,format=S8,channels=2 ! level ! fakesink silent=TRUE
This pipeline converts audio to 8-bit. The level element shows that the output levels still match the one for a sine wave. 
1
 
gst-launch-1.0 -v -m uridecodebin uri=file:///path/to/audio.flac ! audioconvert ! vorbisenc ! oggmux ! filesink location=audio.ogg
The vorbis encoder takes float audio data instead of the integer data output by most other audio elements. This pipeline decodes a FLAC audio file (or any other audio file for which decoders are installed) and re-encodes it into an Ogg/Vorbis audio file.

Synopsis

Element Information

plugin

 audioconvert

author

 Benjamin Otte <otte@gnome.org>

class

 Filter/Converter/Audio

Element Pads

name

 sink

direction

 sink

presence

 always

details

 audio/x-raw, format=(string){ S8, U8, S16LE, S16BE, U16LE, U16BE, S24_32LE, S24_32BE, U24_32LE, U24_32BE, S32LE, S32BE, U32LE, U32BE, S24LE, S24BE, U24LE, U24BE, S20LE, S20BE, U20LE, U20BE, S18LE, S18BE, U18LE, U18BE, F32LE, F32BE, F64LE, F64BE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string)interleaved

name

 src

direction

 source

presence

 always

details

 audio/x-raw, format=(string){ S8, U8, S16LE, S16BE, U16LE, U16BE, S24_32LE, S24_32BE, U24_32LE, U24_32BE, S32LE, S32BE, U32LE, U32BE, S24LE, S24BE, U24LE, U24BE, S20LE, S20BE, U20LE, U20BE, S18LE, S18BE, U18LE, U18BE, F32LE, F32BE, F64LE, F64BE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string)interleaved

Functions

Types and Values

struct GstAudioConvert

struct GstAudioConvert;

The audioconvert object structure.

Property Details

The “dithering” property

  “dithering”                GstAudioDitherMethod

Selects between different dithering methods.

Flags: Read / Write

Default value: GST_AUDIO_DITHER_TPDF

The “noise-shaping” property

  “noise-shaping”            GstAudioNoiseShapingMethod

Selects between different noise shaping methods.

Flags: Read / Write

Default value: GST_AUDIO_NOISE_SHAPING_NONE

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