No sound play with aac codec

[Blondin]

hello all,

I launch this first pipeline

gst-launch-1.0 -vvv audiotestsrc ! audio/x-raw,rate=44100,channels=2 !
voaacenc bitrate=128000 ! aacparse ! queue ! shmsink
socket-path=/tmp/output_a  wait-for-connection=true

This pipeline below don't work .. Can you help me to configure this audio
pipeline ?

gst-launch-1.0 shmsrc socket-path=/tmp/output_a ! capssetter caps=audio/mpeg
! aacparse ! decodebin ! audioconvert ! autoaudiosink

regards





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[Tim Müller]

On Fri, 2020-10-02 at 09:19 -0500, Blondin wrote:

Hi,

> gst-launch-1.0 -vvv audiotestsrc ! audio/x-raw,rate=44100,channels=2
> ! voaacenc bitrate=128000 ! aacparse ! queue ! shmsink
> socket-path=/tmp/output_a  wait-for-connection=true


Try

  .. ! aacparse ! audio/mpeg,stream-format=adts ! shmsink

and then

> gst-launch-1.0 shmsrc socket-path=/tmp/output_a ! capssetter
> caps=audio/mpeg ! aacparse ! decodebin ! audioconvert ! autoaudiosink

  shmsrc .. ! decodebin ! ...

(ADTS is typefindable, "raw" AAC not so much).

Alternatively you can also set proper/full AAC caps on the capsetter
caps (with stream-format field and codec_data and all that).

Cheers
 Tim

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Tim Müller, Centricular Ltd - http://www.centricular.com

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