Reproducir audio o video desde un mpeg

Audio:

gst-launch-0.10 filesrc location=Vogue.mpeg ! mpegdemux ! mad ! audioconvert ! alsasink

gst-launch-0.10 filesrc location=Vogue.mpeg ! mpegdemux ! mad ! audioconvert ! autoaudiosink

Video:
gst-launch-0.10 filesrc location=4_Minutes.mpeg ! mpegdemux ! mpeg2dec ! ffmpegcolorspace ! autovideosink