GStreamer-CRITICAL error on vainilla usage of the encoder (gst-launch)

[lalanne]

Hello:
When trying this test (2 gst-launch instances communicating via RTP)
Sender side

gst-launch-1.0 --gst-plugin-path=/usr/local/lib/gstreamer-1.0 -v filesrc location=bienvenidoTmp.wav ! wavparse ! g729enc ! rtpg729pay ! udpsink host=127.0.0.1 port=6002 sync=true

Receiver side

gst-launch-1.0 -v udpsrc port=6002 caps="application/x-rtp" ! rtpg729depay ! avdec_g729 ! autoaudiosink

The sender side show this errors

(gst-launch-1.0:12731): GStreamer-CRITICAL **: 12:05:09.432: gst_buffer_map_range: assertion 'GST_IS_BUFFER (buffer)' failed
(gst-launch-1.0:12731): GStreamer-CRITICAL **: 12:05:09.433: gst_buffer_unmap: assertion 'GST_IS_BUFFER (buffer)' failed
(gst-launch-1.0:12731): GStreamer-CRITICAL **: 12:05:09.452: gst_buffer_map_range: assertion 'GST_IS_BUFFER (buffer)' failed
(gst-launch-1.0:12731): GStreamer-CRITICAL **: 12:05:09.454: gst_buffer_unmap: assertion 'GST_IS_BUFFER (buffer)' failed
(gst-launch-1.0:12731): GStreamer-CRITICAL **: 12:05:09.461: gst_buffer_map_range: assertion 'GST_IS_BUFFER (buffer)' failed
(gst-launch-1.0:12731): GStreamer-CRITICAL **: 12:05:09.463: gst_buffer_unmap: assertion 'GST_IS_BUFFER (buffer)' failed
(gst-launch-1.0:12731): GStreamer-CRITICAL **: 12:05:09.471: gst_buffer_map_range: assertion 'GST_IS_BUFFER (buffer)' failed
(gst-launch-1.0:12731): GStreamer-CRITICAL **: 12:05:09.473: gst_buffer_unmap: assertion 'GST_IS_BUFFER (buffer)' failed

The audio is received correctly by the receiver side(you can hear ir clearly), but at the end of the audio file instead of closing the file, you can hear a loud audio distortion at the same time when the CRITICAL errors of Gstreamer are shown on the standard output.

Could you give me any guidance on how to solve this?

Thanks in advance.

[sdroege]

See #4