[asterisk-bugs] [JIRA] (ASTERISK-27360) Audio file from ffmpeg pops in AGI (but not dialplan)

[Naftoli Gugenheim (JIRA)]

Naftoli Gugenheim created ASTERISK-27360:
--------------------------------------------

             Summary: Audio file from ffmpeg pops in AGI (but not dialplan)
                 Key: ASTERISK-27360
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27360
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
    Affects Versions: 14.3.0, 13.13.1
         Environment: Reproduced in all of:
* Ubuntu 17.04 official package installed directly on laptop
* cleardevice/docker-asterisk-latest-pjsip-fail2ban docker image on laptop and on ubuntu 16.04.3
* cleardevice/docker-cert-asterisk13-ubuntu docker image on laptop and on ubuntu 16.04.3
            Reporter: Naftoli Gugenheim


1. Using a custom webapp and recorder.js, I record an audio file. A specimen can be accessed here: https://drive.google.com/open?id=0B2SmgnDyV1aEWjBDTzJxRVh3dHM

2. I run ffmpeg -i /tmp/upload7121127648236719621.wav -ac 1 -ar 8000 -y /tmp/test1.wav. The result can be accessed here: https://drive.google.com/open?id=0B2SmgnDyV1aEckJKZWxtRHJ6RUU

3. I run sox /tmp/test1.wav /tmp/test.wav. The result can be accessed here: https://drive.google.com/open?id=0B2SmgnDyV1aEYmNIbkNOaDhwMjA

The Problem:

The file from step 2 plays fine using Playback and Background in the dialplan. However when using the AGI command STREAM FILE, there is a terrible popping sound at the beginning.

Here is what it sounds like listening to test1 repeated: https://drive.google.com/open?id=0B2SmgnDyV1aEZzFLczdQaXNYVTg

Here is what it sounds like listening to test repeated: https://drive.google.com/open?id=0B2SmgnDyV1aEWk9KZFgxNkc5WXc

The testing was done with this AGI script (changing the filename as needed):

#!/bin/bash


checkresults() {
	while read line
	do
	case ${line:0:4} in
	"200 " ) echo $line >&2
	         return;;
	"510 " ) echo $line >&2
	         return;;	
	"520 " ) echo $line >&2
	         return;;
	*      ) echo $line >&2;;	#keep on reading those Invlid command
					#command syntax until "520 End ..."
	esac
	done
}


declare -a array
while read -e ARG && [ "$ARG" ] ; do
	array=(` echo $ARG | sed -e 's/://'`)
	export ${array[0]}=${array[1]}
done


# following variables are available from asterisk 
echo $agi_request >&2
echo $agi_channel >&2
echo $agi_language >&2
echo $agi_type >&2
echo $agi_uniqueid >&2
echo $agi_callerid >&2
echo $agi_dnid >&2
echo $agi_rdnis >&2
echo $agi_context >&2
echo $agi_extension >&2
echo $agi_priority >&2
echo $agi_enhanced >&2


echo 'ANSWER'

checkresults

while true; do
	sleep 1
	echo begin >&2
	echo 'STREAM FILE /tmp/test ""'
	echo end >&2
	sleep 1 
	checkresults
done




--
This message was sent by Atlassian JIRA
(v6.2#6252)