Erro de atualização do Gstreamer Mac OS X

Estou tentando transmitir áudio no Mac OS X, mas continuo recebendo este erro:

gst-launch osxaudiosrc ! audioresample ! audioconvert ! alawenc ! rtppcmapay ! udpsink port=10001 host=192.168.2.10

Setting pipeline to PAUSED …
ERROR: Pipeline doesn’t want to pause.
ERROR: from element /GstPipeline:pipeline0/GstUDPSink:udpsink0: Could not get/set settings from/on resource.
Additional debug info:
gstmultiudpsink.c(804): gst_multiudpsink_configure_client (): /GstPipeline:pipeline0/GstUDPSink:udpsink0:
Could not set TTL socket option (22): Invalid argument
Setting pipeline to NULL …
Freeing pipeline …

Isso funciona no Windows substituindoosxaudiosrc comautoaudiosrc, alguém sabe qual é o problema?

obrigado

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