matlab中涉usb摄像头视频的提取的问题，可以使用这个-issues involved in the extraction matlab usb camera video, you can use this to try

利用matlab对USB摄像头进行提取，但是所得的视频为无压缩视频，因此对硬盘空间要求比较高-USB camera using matlab for extraction, but the resulting video is uncompressed video, so the disk space requirements are relatively high