The problem is that people said they fail to open a DAV file on their computer, and they want to change the file format from DAV to MP4 for easier playback or editing.
This surveillance is widely used in areas like banks and stores, where security and monitoring are needed.
It transmits a signal to a specific place via video cameras on a limited set of monitors. Tip: CCTV is the acronym of closed-circuit television, which is also known as video surveillance.
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