under ubuntu-x86
record : gst-launch-0.10 alsasrc ! lamemp3enc ! filesink location=output.mp3
or use autoaudiosrc
playback : gst-launch-0.10 filesrc location=output.mp3 ! mad ! alsasink
or use autuaudiosink
mp4 playback : gst-launch-0.10 -v filesc location=aa.mp4 ! flvdemux name=d d.video ! queue ! ffdec_h264 ! colorspace ! autovideosink d.audio ! queue ! decodebin ! autoaudiosink
rtsp client
gst-launch-0.10 rtspsrc location=rtsp://localhost:8554/test ! rtpmpadepay ! mad ! alsasink