Your best bet for conversion of the .dav recordings produced a range of digital video recorders by alienDVR is to use the software provided by the same company called alienDVR Police Evidence Converter Module, that allows users to convert their .dav recordings to .avi, .wmv a .rm videos.
Some 3rd party video conversion software may also claim they support dav videos, but that may be just marketing trick to fool search engines. In reality special proprietary video formats are rarely supported in 3rd party programs.Open DAV file Open WMV file
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