Code:
rtmpdump -r "rtmp://199.9.255.110/app" -a "app" -y "jtv_kZKC9fq_yWWA5ZVo" -j "7b24f4a701025b87632811318452e398849afeb2:{\"swfDomains\": [\"justin.tv\", \"jtvx.com\", \"xarth.com\", \"twitchtv.com\", \"twitch.tv\", \"newjtv.com\", \"jtvnw.net\", \"wdtinc.com\", \"imapweather.com\", \"facebook.com\", \"starcrafting.com\"], \"streamName\": \"jtv_kZKC9fq_yWWA5ZVo\", \"expiration\": 1328037050.9632249, \"server\": \"jfk01-video2-2\"}" -W "http://www-cdn.jtvnw.net/widgets/live_frontpage_player.rd45ce085ba85e5ba1bd318d6073a3002923fb0af.swf" -v -o t.flv