.Dav File
Definition
Dahua's proprietary container format wrapping an H.264 or H.265 stream plus metadata. Cannot be opened directly by mainstream players; converted with vendor tools or AmpedDVRConv.
- Vendor
- Dahua
- Contains
- H.264 or H.265 stream plus metadata
- Compatibility
- Not openable by mainstream media players directly
- Conversion tools
- Vendor tools or AmpedDVRConv
Common questions
Why can't a standard forensic video player open a .dav file directly even though it wraps a common codec?+
The proprietary container structure around the H.264/H.265 stream, including Dahua's custom metadata and header format, is not recognised by standard players expecting formats like MP4 or AVI, so the container itself needs to be parsed or converted even though the underlying video codec is a widely supported standard.
What risk does converting a .dav file for viewing introduce into an evidentiary chain?+
Conversion can strip or alter embedded metadata such as timestamps and camera identifiers if the tool used is not forensically validated, so examiners should use a tool proven to preserve the original metadata and should retain and hash the original .dav file alongside any converted copy used for review.
Related terms
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