[gst-devel] problem sending audio/mpeg over RTP

[Bebjak, Michal]

Hi,

I'm developing an client-server aplication which should use GStreamer. I want to endcode the audio into MP3 and send it oved RTP to the client. I first tried to run this following commands:

server terminal:  gst-launch-0.10 -v audiotestsrc ! lame ! rtpmpapay ! udpsink
client terminal:  gst-launch-0.10 -v udpsrc ! 'application/x-rtp, media=audio, payload=96, media=(string)audio, clock-rate=(int)90000, encoding-name=(string)MPA' !
                  rtpmpadepay ! 'audio/mpeg,mpegversion=1,layer=3,channels=1,rate=44100' ! mad ! audioconvert ! volume volume=0.2 ! autoaudiosink


They both work independently but when I try to send the audio from server to client the client crashes. The terminal output is:


$ gst-launch-0.10 -v udpsrc ! 'application/x-rtp, media=audio, payload=96, media=(string)audio, clock-rate=(int)90000, encoding-name=(string)MPA' !
rtpmpadepay ! 'audio/mpeg,mpegversion=1,layer=3,channels=1,rate=44100' ! mad ! audioconvert ! volume volume=0.2 ! autoaudiosink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/pipeline0/capsfilter0.sink: caps = application/x-rtp, media=(string)audio, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MPA
/pipeline0/capsfilter0.src: caps = application/x-rtp, media=(string)audio, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MPA
/pipeline0/rtpmpadepay0.sink: caps = application/x-rtp, media=(string)audio, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MPA
ERROR: from element /pipeline0/udpsrc0: Internal data flow error.
Additional debug info:
gstbasesrc.c(1318): gst_base_src_loop (): /pipeline0/udpsrc0:
streaming task paused, reason error
Execution ended after 1513470000 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
/pipeline0/rtpmpadepay0.sink: caps = NULL
/pipeline0/capsfilter0.sink: caps = NULL
/pipeline0/capsfilter0.src: caps = NULL
Setting pipeline to NULL ...
FREEING pipeline ...

Can someone please help me to make it work?? Thanks a lot!!

Michael