http://ubuntuforums.org/showthread.php?t=340699
mplayer -dumpfile soubor.rm -dumpstream rtsp://ct1.server.streaming.visual.cz/ct/high1/UdalostiP241106.rm -ss 00:41:58 −endpos 01:19:52
mencoder -oac copy -ovc copy "mms://202.67.154.138/Live_Free_Or_Die_Hard/Live_Free_Or_Die_Hard.wmv" -o "Live_Free_Or_Die_Hard.wmv"