What types of devices can be used to convert analog video into digital format in Milestone XProtect?

The correct choice identifies hardware encoders as devices that can effectively convert analog video to digital format, which is a crucial function within Milestone XProtect's system. Hardware encoders are designed specifically for this purpose, and manufacturers like D-Link and Axis produce reliable models that ensure high-quality conversion. These devices capture the analog video signal and encode it into a digital format that can be easily processed, stored, and managed by digital video surveillance systems like XProtect.

Using hardware encoders allows for integration of legacy analog cameras into modern IP-based video systems, expanding your surveillance capabilities. This integration is essential for organizations looking to leverage existing analog infrastructure while transitioning to digital technology.

The other options highlight devices or formats that either do not serve the purpose of the question or are too restrictive. For example, software encoders can be relevant in certain contexts, but they cannot alone provide the hardware interfaces necessary for the physical signals from analog sources. High-definition cameras and wireless cameras pertain more to specific types of video sources rather than the conversion process itself, making them less applicable to the question regarding the conversion of analog signals.