
test.wav was generated using:

  gst-launch-0.10 \
      audiotestsrc samplesperbuffer=128 num-buffers=1 wave=saw \
          freq=0.8405 ! \
      audio/x-raw-int,width=16,depth=16,signed=true,channels=1 ! \
      wavenc ! \
      filesink location=test.wav

3x16x16.mkv was generated using:

   ln -s 2x2.png f0.png
   ln -s 2x2.png f1.png
   ln -s 2x2.png f2.png
   gst-launch-0.10 \
       multifilesrc do-timestamp=false location=f%d.png \
           caps="image/png,pixel-aspect-ratio=1/1,framerate=30/1" ! \
       pngdec ! \
       videorate ! \
       videoscale ! \
       ffmpegcolorspace ! \
       video/x-raw-yuv ! \
       matroskamux ! \
       filesink location=3x16x16.mkv
