Overview
About FEX DVR™
FEX-DVR is a forensic video analysis tool built for one of the hardest problems in digital evidence: recovering and presenting CCTV footage from the proprietary, undocumented filesystems used by DVR and NVR hardware. Where a general-purpose forensic suite sees an unrecognized disk full of raw bytes, FEX-DVR reads the underlying recorder format directly — reconstructing recordings, timestamps, and channel layout exactly as the original device wrote them. It works from standard forensic disk images (E01/Ex01), so examiners can analyse a seized recorder’s drive without altering the source evidence and while preserving a defensible chain of custody.
At its core, FEX-DVR understands the on-disk structures that DVR manufacturers never publish. It natively decodes the filesystems and frame formats used across a wide range of devices — including Hikvision, Dahua, Swann, and numerous other vendors — parsing each one’s native index structures to enumerate every recording the device captured. Critically, it does not depend on those structures being intact: when a device’s index is partial, overwritten, or absent, FEX-DVR falls back to signature-based carving across unallocated space, recovering video that has been deleted, orphaned, or stranded outside any recognized partition. The result is the maximum possible recovery from drives that other tools report as empty or unknown.
For review and presentation, FEX-DVR provides a purpose-built workflow rather than a generic media player. A unified Clip List organizes every recovered recording with its channel, resolution, and time range; synchronised Multi-View plays multiple cameras together against a shared clock so an event can be followed across angles; and a timeline, bookmarking, and Bates-numbering system lets examiners mark, label, and reference specific moments consistently throughout a case. From this same workspace, the application generates structured documentation — cover pages, case summaries, device inventories, exhibit lists, and frame-accurate stills — producing the kind of repeatable, well-evidenced reports that hold up under scrutiny.
FEX-DVR is developed and maintained by GetData Forensics, with a release process built around rigorous verification: every supported format is validated against real-world forensic images, parser behavior is documented at the byte level, and findings are cross-checked across multiple independent devices before they ship. The application is continually extended as new recorder formats and firmware variants are encountered in the field, so the range of devices it can recover grows with each release. For investigators facing a recorder that “just won’t open,” FEX-DVR is designed to be the tool that turns an opaque disk into admissible, intelligible evidence.