4ch H.264 HD SDI DVR 1080P realtime playing, recording,playback BNC,VGA,HDMI video ... CH Detailed Product Description4ch H.264 HD SDI DVR 1080P realtime playing, recording,playback BNC,VGA,HDMI video ... VOIP not support Live Video Resolu-tion 1080p Playback Resolution 1080p Playback1ch 1080P realtime playback, 4ch D1/CIF substreamImage Control ... express and by sea send to you . SDI DVR hd sdi 1080p dvr