bash$ gst-launch-0.8 { oggmux name=mux ! identity name=outidentity ! 
filesink name=filesink location=/tmp/test_dvd_rip.ogg { dvdreadsrc name=src
location=/dev/dvd ! dvddemux name=demux .audio_00 ! { queue
name=q-a-in ! a52dec ! audioconvert ! audioscale !
audio/x-raw-int,rate=44100,channels=2 ! audioconvert ! rawvorbisenc
name=a-encoder ! queue name=q-a-out ! mux. } { demux.video_00 !
queue name=q-v-in ! mpeg2dec ! videorate ! 
video/x--raw-yuv,framerate=\(double\)25.0 ! videocrop left=0 right=0
top=56 bottom=62 ! deinterlace ! videoscale ! 
video/x-raw-yuv,width=384,height=288 ! theoraenc name=v-encoder !
queue name=q-v-out ! mux. } } }

....
....
....

(process:5678): GStreamer-WARNING **: Unhandled state change from PLAYING to READY
No accelerated IMDCT transform found

(hangs here forever. /tmp/test_dvd_rip.ogg never grows. kill -USR1 5678 does nothing!)