Western Digital shrunk its media hub today and produced the WD TV Mini, a new extra-small version of its earlier media sharing device. The set-top box omits HDMI output but now measures just 3.6 inches square and 0.8 inches deep while still capable of playing 1080i video depending on the codec. RealVideo format support is equally new and complements the existing MPEG-1/2/4, VOB and XviD formats.