avenc_ac3

libav ac3 encoder

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstAudioEncoder
                    ╰──avenc_ac3

Implemented interfaces

Factory details

Authors: – Wim Taymans , Ronald Bultje

Classification: – Codec/Encoder/Audio

Rank – secondary

Plugin – libav

Package – GStreamer FFMPEG Plug-ins

Pad Templates

sink

audio/x-raw:
       channels: 1
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 2
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 3
   channel-mask: 0x0000000000000103
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 3
   channel-mask: 0x0000000000000007
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 4
   channel-mask: 0x0000000000000c03
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 4
   channel-mask: 0x0000000000000033
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 4
   channel-mask: 0x0000000000000107
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 5
   channel-mask: 0x0000000000000c07
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 5
   channel-mask: 0x0000000000000037
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 2
   channel-mask: 0x000000000000000c
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 3
   channel-mask: 0x000000000000000b
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 4
   channel-mask: 0x000000000000010b
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 4
   channel-mask: 0x000000000000000f
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 5
   channel-mask: 0x000000000000010f
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 6
   channel-mask: 0x0000000000000c0f
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved
audio/x-raw:
       channels: 6
   channel-mask: 0x000000000000003f
           rate: { (int)48000, (int)44100, (int)32000 }
         format: F32LE
         layout: interleaved

Presence – always

Direction – sink

Object type – GstPad

src

audio/x-ac3:
       channels: [ 1, 6 ]
           rate: { (int)48000, (int)44100, (int)32000 }

Presence – always

Direction – src

Object type – GstPad

Properties

ac 

“ac” gint

set number of audio channels (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

ad-conv-type 

“ad-conv-type” ac-3-encoder-ad-conv-type *

A/D Converter Type (Private codec option)

Flags : Read / Write

Default value : unknown (-1)

ar 

“ar” gint

set audio sampling rate (in Hz) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

audio-service-type 

“audio-service-type” avcodeccontext-audio-service-type *

audio service type (Generic codec option, might have no effect)

Flags : Read / Write

Default value : ma (0)

bitrate 

“bitrate” gint

set bitrate (in bits/s) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

bitrate-tolerance 

“bitrate-tolerance” gint

Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far ratecontrol is willing to deviate from the target average bitrate value. This is not related to minimum/maximum bitrate. Lowering tolerance too much has an adverse effect on quality. (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 4000000

bufsize 

“bufsize” gint

set ratecontrol buffer size (in bits) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

center-mixlev 

“center-mixlev” gfloat

Center Mix Level (Private codec option)

Flags : Read / Write

Default value : 0.594604

channel-coupling 

“channel-coupling” ac-3-encoder-channel-coupling *

Channel Coupling (Private codec option)

Flags : Read / Write

Default value : auto (-1)

compression-level 

“compression-level” gint

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : -1

copyright 

“copyright” gint

Copyright Bit (Private codec option)

Flags : Read / Write

Default value : -1

cpl-start-band 

“cpl-start-band” ac-3-encoder-cpl-start-band *

Coupling Start Band (Private codec option)

Flags : Read / Write

Default value : auto (-1)

cutoff 

“cutoff” gint

set cutoff bandwidth (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

debug 

“debug” avcodeccontext-debug *

print specific debug info (Generic codec option, might have no effect)

Flags : Read / Write

Default value : (none)

dheadphone-mode 

“dheadphone-mode” ac-3-encoder-dheadphone-mode *

Dolby Headphone Mode (Private codec option)

Flags : Read / Write

Default value : unknown (-1)

dialnorm 

“dialnorm” gint

Dialogue Level (dB) (Private codec option)

Flags : Read / Write

Default value : -31

dmix-mode 

“dmix-mode” ac-3-encoder-dmix-mode *

Preferred Stereo Downmix Mode (Private codec option)

Flags : Read / Write

Default value : unknown (-1)

dsur-mode 

“dsur-mode” ac-3-encoder-dsur-mode *

Dolby Surround Mode (Private codec option)

Flags : Read / Write

Default value : unknown (-1)

dsurex-mode 

“dsurex-mode” ac-3-encoder-dsurex-mode *

Dolby Surround EX Mode (Private codec option)

Flags : Read / Write

Default value : unknown (-1)

dump-separator 

“dump-separator” gchararray

set information dump field separator (Generic codec option, might have no effect)

Flags : Read / Write

Default value : NULL

err-detect 

“err-detect” avcodeccontext-err-detect *

set error detection flags (Generic codec option, might have no effect)

Flags : Read / Write

Default value : (none)

export-side-data 

“export-side-data” avcodeccontext-export-side-data *

Export metadata as side data (Generic codec option, might have no effect)

Flags : Read / Write

Default value : (none)

flags 

“flags” avcodeccontext-flags *

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : (none)

flags2 

“flags2” avcodeccontext-flags2 *

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : (none)

frame-size 

“frame-size” gint

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

global-quality 

“global-quality” gint

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

loro-cmixlev 

“loro-cmixlev” gfloat

Lo/Ro Center Mix Level (Private codec option)

Flags : Read / Write

Default value : -1

loro-surmixlev 

“loro-surmixlev” gfloat

Lo/Ro Surround Mix Level (Private codec option)

Flags : Read / Write

Default value : -1

ltrt-cmixlev 

“ltrt-cmixlev” gfloat

Lt/Rt Center Mix Level (Private codec option)

Flags : Read / Write

Default value : -1

ltrt-surmixlev 

“ltrt-surmixlev” gfloat

Lt/Rt Surround Mix Level (Private codec option)

Flags : Read / Write

Default value : -1

max-pixels 

“max-pixels” gint64

Maximum number of pixels (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 2147483647

max-samples 

“max-samples” gint64

Maximum number of samples (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 2147483647

maxrate 

“maxrate” gint64

maximum bitrate (in bits/s). Used for VBV together with bufsize. (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

minrate 

“minrate” gint64

minimum bitrate (in bits/s). Most useful in setting up a CBR encode. It is of little use otherwise. (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

mixing-level 

“mixing-level” gint

Mixing Level (Private codec option)

Flags : Read / Write

Default value : -1

original 

“original” gint

Original Bit Stream (Private codec option)

Flags : Read / Write

Default value : -1

per-frame-metadata 

“per-frame-metadata” gboolean

Allow Changing Metadata Per-Frame (Private codec option)

Flags : Read / Write

Default value : false

room-type 

“room-type” ac-3-encoder-room-type *

Room Type (Private codec option)

Flags : Read / Write

Default value : unknown (-1)

stereo-rematrixing 

“stereo-rematrixing” gboolean

Stereo Rematrixing (Private codec option)

Flags : Read / Write

Default value : true

strict 

“strict” avcodeccontext-strict *

how strictly to follow the standards (Generic codec option, might have no effect)

Flags : Read / Write

Default value : normal (0)

surround-mixlev 

“surround-mixlev” gfloat

Surround Mix Level (Private codec option)

Flags : Read / Write

Default value : 0.5

thread-type 

“thread-type” avcodeccontext-thread-type *

select multithreading type (Generic codec option, might have no effect)

Flags : Read / Write

Default value : slice+frame

threads 

“threads” avcodeccontext-threads *

set the number of threads (Generic codec option, might have no effect)

Flags : Read / Write

Default value : unknown (1)

ticks-per-frame 

“ticks-per-frame” gint

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 1

trellis 

“trellis” gint

rate-distortion optimal quantization (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0

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