Product function: This product is a portable USB high-definition video capture card that can simultaneously capture HD audio and video signals and transmit them to mobile phones and computers for preview, editing, storage and other multi-functional applications. Product application: The HD interface of the product is connected to audio and video input signals, and the USB interface is connected to a mobile phone or computer to realize high-definition acquisition, video recording, video live broadcast, teaching recording, medical imaging, game live broadcast, video live broadcast, and high-definition video recording camera.