gst-launch-0.10 \
videomixer name=m sink_1::xpos=320 ! ffmpegcolorspace ! fbdevsink \
rtspsrc location="rtsp://blablabla" ! rtph264depay ! decodebin ! videoflip method=clockwise ! ffmpegcolorspace ! videoscale ! video/x-raw-rgb,width=320,height=480,pixel-aspect-ratio=1/1 ! m. \
rtspsrc location="rtsp://blablabla" ! rtph264depay ! decodebin ! videoflip method=clockwise ! ffmpegcolorspace ! videoscale ! video/x-raw-rgb,width=320,height=480,pixel-aspect-ratio=1/1 ! m.