Selecting a video capture card requires balancing resolution, frame rate, and interface compatibility. For professional use, prioritize cards that support 4K at 60FPS to ensure future-proofing. Key technical specs include the bus interface (USB 3.0/3.1 vs. PCIe); USB is ideal for portability, while PCIe offers lower latency and higher data bandwidth for multi-channel setups. Ensure the device supports UVC (USB Video Class) protocol for driver-free 'plug and play' functionality across Windows, macOS, and Linux.