Hi All,
I am trying to transcode between OPUS and G711. I encountered a strange problem which I couldn’t find any clue about the cause. After the channel has been answered with opus, I hear a strange sound (highly distorted version of my voice) for 10 seconds and it starts to operate properly with the message "[DEBUG] switch_core_media_bug.c:1198 Removing BUG from…” . I can reproduce same problem with echo application. Here is my logs and opus.conf.xml files. Did anybody experienced this issue?
Thanks.
/Volkan
My FreeSWITH Version:
FreeSWITCH Version 1.6.16+git~20170407T164913Z~3da6bd0108~64bit (git 3da6bd0 2017-04-07 16:49:13Z 64bit)
Opus.xml config:
<configuration name="opus.conf">
<settings>
<param name="use-vbr" value="1"/>
<param name="use-dtx" value="1"/>
<param name="complexity" value="10"/>
<param name="maxaveragebitrate" value="14400"/>
<param name="maxplaybackrate" value="8000"/>
<param name="packet-loss-percent" value="15"/>
<param name="keep-fec-enabled" value="1"/>
<param name="use-jb-lookahead" value="0"/>
<param name="advertise-useinbandfec" value="1"/>
<param name="asymmetric-sample-rates" value="1"/>
</settings>
</configuration>
Freeswitch Log:
2017-09-25 22:01:06.277462 [DEBUG] sofia.c:7058 Remote SDP:
v=0
o=- 8070049943 45777 IN IP4 192.168.100.2
s=dvjtiwu
c=IN IP4 192.168.100.2
t=0 0
m=audio 10036 RTP/AVP 103 8 0 9 101
a=rtpmap:103 opus/48000/2
a=fmtp:103 maxplaybackrate=8000;maxaveragebitrate=15500;useinbandfec=1;usedtx=1
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:20
a=nortpproxy:yes
.
.
.
.
.
2017-09-25 22:01:06.337394 [INFO] mod_dialplan_xml.c:637 Processing 2223 <2223>->*71 in context default
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [opus:103:48000:20:0:1]/[opus:116:48000:20:0:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4484 Audio Codec Compare [opus:116:48000:20:0:1] ++++ is saved as a match
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [opus:103:48000:20:0:1]/[PCMU:0:8000:20:64000:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [opus:103:48000:20:0:1]/[PCMA:8:8000:20:64000:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [PCMA:8:8000:20:64000:1]/[opus:116:48000:20:0:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [PCMA:8:8000:20:64000:1]/[PCMU:0:8000:20:64000:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [PCMA:8:8000:20:64000:1]/[PCMA:8:8000:20:64000:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4484 Audio Codec Compare [PCMA:8:8000:20:64000:1] ++++ is saved as a match
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [PCMU:0:8000:20:64000:1]/[opus:116:48000:20:0:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [PCMU:0:8000:20:64000:1]/[PCMU:0:8000:20:64000:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4484 Audio Codec Compare [PCMU:0:8000:20:64000:1] ++++ is saved as a match
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [PCMU:0:8000:20:64000:1]/[PCMA:8:8000:20:64000:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [G722:9:8000:20:64000:1]/[opus:116:48000:20:0:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [G722:9:8000:20:64000:1]/[PCMU:0:8000:20:64000:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4429 Audio Codec Compare [G722:9:8000:20:64000:1]/[PCMA:8:8000:20:64000:1]
2017-09-25 22:01:06.357410 [DEBUG] switch_core_media.c:4345 Set telephone-event payload to 101@8000
2017-09-25 22:01:06.357410 [DEBUG] mod_opus.c:596 Opus encoder: set bitrate based on maxaveragebitrate value found in SDP or local config [14400bps]
2017-09-25 22:01:06.357410 [DEBUG] mod_opus.c:613 Opus encoder: set audio bandwidth to [NARROWBAND] based on maxplaybackrate value found in SDP or local config [8000Hz]
2017-09-25 22:01:06.357410 [DEBUG] mod_opus.c:596 Opus encoder: set bitrate based on maxaveragebitrate value found in SDP or local config [14400bps]
2017-09-25 22:01:06.357410 [DEBUG] mod_opus.c:613 Opus encoder: set audio bandwidth to [NARROWBAND] based on maxplaybackrate value found in SDP or local config [8000Hz]
2017-09-25 22:01:06.357410 [DEBUG] switch_rtp.c:4096 Starting timer [soft] 960 bytes per 20ms
v=0
o=FreeSWITCH 1506342472 1506342473 IN IP4 192.168.100.12
s=FreeSWITCH
c=IN IP4 192.168.100.12
t=0 0
m=audio 23594 RTP/AVP 103 101
a=rtpmap:103 opus/48000/2
a=fmtp:103 useinbandfec=1; usedtx=1; maxaveragebitrate=14400; maxplaybackrate=8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=sendrecv
2017-09-25 22:01:06.837459 [DEBUG] switch_rtp.c:7229 Correct audio ip/port confirmed.
2017-09-25 22:01:06.837459 [DEBUG] switch_core_io.c:448 Setting BUG Codec opus:116
2017-09-25 22:01:06.837459 [DEBUG] mod_opus.c:596 Opus encoder: set bitrate based on maxaveragebitrate value found in SDP or local config [14400bps]
2017-09-25 22:01:06.837459 [DEBUG] mod_opus.c:613 Opus encoder: set audio bandwidth to [NARROWBAND] based on maxplaybackrate value found in SDP or local config [8000Hz]
2017-09-25 22:01:06.837459 [DEBUG] switch_core_io.c:780 Engaging Read Buffer at 320 bytes vs 15
[...CREEPY VOICE STARTS HERE AND ENDS WITH THE BELOW MESSAGE...]