HD/AV Dual Live Streaming Webcaster: High Quality video at high and low internet Mix analog audio with HDMI video,digital audio & other audio Built-in-audio level control,mike unit that automatically adjusts the resolution & takes the input No external power supply required Use with any USB Data card, where internet is low Supports capturing Live Audio & Video Use with any server including YouTube Website : www.ivb7.com ; Contact : 9789978981 / 49 /48 /62 /46