Re: how to use avdec_g726 to decode g726 raw data

[strong]

hi, Nicolas

    Thanks for your help.

    Now  I can make avdec_g726 work, like

gst-launch-1.0 filesrc location=8000_1_b5.g726 do-timestamp=true blocksize=100 ! audio/x-adpcm, bitrate=40000, rate=8000, channels=1, layout=g726, format=S16LE ! avdec_g726  ! alsasink sync=false

    But another question is "mute" can not be set when "volume" plugin is used, for example,

if the command line is like

gst-launch-1.0 filesrc location=8000_1_b5.g726 do-timestamp=true blocksize=100 ! audio/x-adpcm, bitrate=40000, rate=8000, channels=1, layout=g726, format=S16LE ! avdec_g726  ! volume volume=5.0 ! alsasink sync=false

   it can work.

But if the command line is like

gst-launch-1.0 filesrc location=8000_1_b5.g726 do-timestamp=true blocksize=100 ! audio/x-adpcm, bitrate=40000, rate=8000, channels=1, layout=g726, format=S16LE ! avdec_g726  ! volume mute=true ! alsasink sync=false

  it can not work, the print message is 

Setting pipeline to PAUSED ...

Pipeline is PREROLLING ...

Redistribute latency...

Pipeline is PREROLLED ...

Setting pipeline to PLAYING ...

New clock: GstAudioSinkClock

Got EOS from element "pipeline0".

Execution ended after 0:00:00.255093264

Setting pipeline to NULL ...

Freeing pipeline ...

   

    it seems that mute in volume will close the stream,  I do not know the reason

Thanks very much

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[Nicolas Dufresne-5]

Le lundi 22 mars 2021 à 11:50 +0800, strong a écrit :

hi, Nicolas

    Thanks for your help.

    Now  I can make avdec_g726 work, like

gst-launch-1.0 filesrc location=8000_1_b5.g726 do-timestamp=true blocksize=100 ! audio/x-adpcm, bitrate=40000, rate=8000, channels=1, layout=g726, format=S16LE ! avdec_g726  ! alsasink sync=false

    But another question is "mute" can not be set when "volume" plugin is used, for example,

if the command line is like

gst-launch-1.0 filesrc location=8000_1_b5.g726 do-timestamp=true blocksize=100 ! audio/x-adpcm, bitrate=40000, rate=8000, channels=1, layout=g726, format=S16LE ! avdec_g726  ! volume volume=5.0 ! alsasink sync=false

   it can work.

But if the command line is like

gst-launch-1.0 filesrc location=8000_1_b5.g726 do-timestamp=true blocksize=100 ! audio/x-adpcm, bitrate=40000, rate=8000, channels=1, layout=g726, format=S16LE ! avdec_g726  ! volume mute=true ! alsasink sync=false

  it can not work, the print message is 

Setting pipeline to PAUSED ...

Pipeline is PREROLLING ...

Redistribute latency...

Pipeline is PREROLLED ...

Setting pipeline to PLAYING ...

New clock: GstAudioSinkClock

Got EOS from element "pipeline0".

Execution ended after 0:00:00.255093264

Setting pipeline to NULL ...

Freeing pipeline ...

   

    it seems that mute in volume will close the stream,  I do not know the reason

mute is optimized, instead of filling the stream with silence, it will send gaps. As you have asked gstreamer to no do synchronization, gaps are consumed very fast as they aren't blocked by the audio queue. Drop the sync=false for better results.

Thanks very much

_______________________________________________

gstreamer-devel mailing list

[hidden email]

https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel