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