If you have a generic "EasyCAP" or "USB Video Capture" device, search Archive.org for "EasyCAP drivers" or "LV5HD original CD." Many users have uploaded ISO images of the original mini-CDs.
Some LV5HD Hybrid drivers are Windows-only. On macOS, check if the device supports —if so, it works natively in apps like QuickTime Player (File > New Movie Recording). If a driver is required, it will be a .pkg installer. After installation, reboot and check System Information > USB for device recognition. lv5hd hybrid usb driver download