Created using the following gst-launch line from the HD H.264+AAC in
MPEG4 file:

gst-launch \
filesrc location=Sita_Sings_the_Blues_1080p.mp4 num-buffers=200 \
! qtdemux name=d ! queue \
! ffdec_h264 ! videoscale ! videorate \
! video/x-raw-yuv,height=288,width=352,framerate=25/1 \
! mpeg2enc bitrate=1152 \
! queue ! mplex name=m \
! filesink location=Sita_Sings_The_Blues_Clip.mpg \
d. ! queue ! faad ! audioresample ! audio/x-raw-int,rate=44100 \
! audiorate ! twolame bitrate=224 ! m.