[pulseaudio-discuss] Dropped xxx samples. This is most likely because downstream can't keep up and is consuming samples too slowly.

[corbeille]

Hey Georg,

I have updated my to raspios since last time : Debian GNU/Linux 11
(bullseye).
It comes with :
- pulseaudio 14.2
- GStreamer 1.18.4

Is it also too old ?
I was hoping to avoid installing pulseaudio from source.
If so, I will give it a try...
++

Jack



Le dimanche 13 février 2022 à 17:05 +0100, Georg Chini a écrit :
> On 13.02.22 16:57, corbeille wrote:
> > Hello,
> > 
> > I did some additional tests.
> > And it seems the problem occurs when I have a second null sink.
> > With
> > only one null sink, I don't have any problem. Weird.
> > 
> > So here is an example of the configuration that causes the problem
> > :
> > 
> > 1st shell:
> > $ pacmd load-module module-null-sink sink_name=MySink
> > $ pacmd load-module module-null-sink sink_name=MySink2
> > 
> > 2nd shell:
> > $ gst-launch-1.0 pulsesrc device="alsa_input.usb-0d8c_C-
> > Media_USB_Headphone_Set-00.analog-mono" ! audioconvert !
> > audioresample
> > ! pulsesink device=MySink
> > 
> > 3rd shell:
> > $ gst-launch-1.0 pulsesrc device=MySink.monitor ! audio/x-
> > raw,channels=2 ! audioconvert ! audioresample ! opusenc ! oggmux !
> > shout2send ip=... port=... mount=... password=...
> > 
> > After 20 minutes, the sound becomes choppy and stop 4/5 minutes
> > after.
> > 
> > You can notice that I don't use the second null sink.
> > 
> > Is it a normal behavior ? If so, how can I do to achieve this
> > configuration on my RPi (by using multi null sink) :
> > 
> > gst_input1 => MySink => gst output1
> > gst_input2 => MySink2 => gst output2
> > 
> > without any trouble ?
> > Thanks.
> > ++
> > 
> > Jack
> > 
> > 
> > 
> > Le vendredi 11 février 2022 à 21:33 +0100, corbeille a écrit :
> > > Hello,
> > > 
> > > I am using pulseaudio (version 12.2) to "join" two audio streams
> > > created
> > > with gstreamer (1.14.4) on a raspberry pi (Raspbian GNU/Linux 10
> > > (buster)).
> > > 
> > > Here the real things :
> > > 
> > > In a first shell, i start with :
> > > $ pacmd load-module module-null-sink sink_name=MySink
> > > 
> > > Then I use gstreamer to get the sound from my audio input (in an
> > > other
> > > shell) :
> > > $ gst-launch-1.0 pulsesrc
> > > device="alsa_input.usb-0d8c_C-Media_USB_Headphone_Set-00.analog-
> > > mono"
> > > !
> > > audioconvert ! audioresample ! pulsesink device=MySink
> > > 
> > > and I send this sound on an icecast server (in an other shell) :
> > > $ gst-launch-1.0 pulsesrc device=MySink.monitor !
> > > "audio/x-raw,channels=2" ! audioconvert ! audioresample ! opusenc
> > > !
> > > oggmux ! shout2send ip=... port=... mount=... password=...
> > > 
> > > Everything is fine, but after 10 minutes, I get in the 3rd shell
> > > ($
> > > gst-launch-1.0 pulsesrc device=MySink.monitor ! ...) a sequence
> > > of
> > > messages like :
> > > 
> > > WARNING: from element
> > > /GstPipeline:pipeline0/GstPulseSrc:pulsesrc0:
> > > Can't record audio fast enough
> > > Additional debug info:
> > > gstaudiobasesrc.c(849): gst_audio_base_src_create ():
> > > /GstPipeline:pipeline0/GstPulseSrc:pulsesrc0:
> > > Dropped 10080 samples. This is most likely because downstream
> > > can't
> > > keep
> > > up and is consuming samples too slowly.
> > > WARNING: from element
> > > /GstPipeline:pipeline0/GstPulseSrc:pulsesrc0:
> > > Can't record audio fast enough
> > > Additional debug info:
> > > gstaudiobasesrc.c(849): gst_audio_base_src_create ():
> > > /GstPipeline:pipeline0/GstPulseSrc:pulsesrc0:
> > > Dropped 34560 samples. This is most likely because downstream
> > > can't
> > > keep
> > > up and is consuming samples too slowly.
> > > WARNING: from element
> > > /GstPipeline:pipeline0/GstPulseSrc:pulsesrc0:
> > > Can't record audio fast enough
> > > Additional debug info:
> > > gstaudiobasesrc.c(849): gst_audio_base_src_create ():
> > > /GstPipeline:pipeline0/GstPulseSrc:pulsesrc0:
> > > Dropped 48000 samples. This is most likely because downstream
> > > can't
> > > keep
> > > up and is consuming samples too slowly.
> > > ...
> > > 
> > > The sound become glitchy and stop after 2 or 3 minutes.
> > > 
> > > According to the message, the stream after "pulsesrc
> > > device=MySink.monitor" is too slow. But I don't understand why.
> > > 
> > > Do you know where is the problem in this setup and how to solve
> > > it ?
> > > Thanks !
> > > ++
> > > 
> > > Jack
> > > 
> Hello,
> 
> have you tried with a more recent version of pulseaudio? 12.2 is
> pretty
> old. You should use 15.0 or current git.
> 
> Regards
>         Georg
>