GStreamer clock-rate =（int）48000问题

Question

I try to playout udp multicast audio stream.

gst-launch-1.0.exe udpsrc multicast-group=239.192.31.65 port=5004 caps="application/x-rtp,channels=(int)2,media=(string)audio,payload=(int)96,clock-rate=(int)44100,encoding-name=(string)L24" ! rtpjitterbuffer latency=10 ! rtpL24depay ! audioconvert ! autoaudiosink sync=false async=false

It works but audio plays slower than original stream due to wrong samplerate. Original stream samplerate is 48kHz. But if I try to set it, GStreamer quits with error.

gst-launch-1.0.exe udpsrc multicast-group=239.192.31.65 port=5004 caps="application/x-rtp,channels=(int)2,media=(string)audio,payload=(int)96,clock-rate=(int)48000,encoding-name=(string)L24" ! rtpjitterbuffer latency=10 ! rtpL24depay ! audioconvert ! autoaudiosink sync=false async=false

Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: Internal data stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop ():
/GstPipeline:pipeline0/GstUDPSrc:udpsrc0:
streaming stopped, reason not-negotiated (-4)
Execution ended after 0:00:00.018626636
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

I don't understand why.

Answer 1

You wouldn't believe - the problem was in soundcard settings - as soon as I set 48000 in soundcard setting in windows settings it start working!