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*** The Pro version can save video record and snapshot into external SD Card or USB Disk, supports loop-recording and without ads ***
"USB Dual Camera" can let your android device connect to 2 USB WebCams or video capture cards via USB-OTG at the same time. You can record video or capture snapshot.
"USB Dual Camera" can record video into two mp4 files synchronously if you connect to 2 USB WebCams at the same time and record. This feature can also records audio separately if both of the cameras have audio input. It can also set to create full Side-by-Side (SBS) 3D video. You can use your 3D video player to view 3D video.