Viewplaycap is primarily a Windows-based software used for viewing and capturing video from USB devices like endoscopes, microscopes, and borescopes
Ensure the file name is something like viewplaycap_v2.3.1.apk and not viewplay_cap_free.exe (which is a Windows virus).
USB OTG Support: Your Android device must support "USB On-The-Go" to power and communicate with external USB devices. You can verify this using a free tool like the USB OTG Checker on Google Play.