Magnet WITNESS is a digital video evidence capture tool designed specifically for forensic investigators, analysts, and legal professionals who need to preserve video from sources where direct export isn’t possible or desirable due to time constraints.
Instead of relying on third-party vendors or clunky export processes that often compromise quality or access, WITNESS offers a reliable, court-admissible method for securing evidence from even the most challenging systems. With a strong focus on forensic integrity, it ensures that what you capture can be confidently used in legal and investigative contexts.
Magnet WITNESS is relied on by professionals in fields where secure, verifiable video evidence is critical — particularly when dealing with restricted systems or on-site playback tools.
It’s especially valuable in time-sensitive scenarios where waiting for IT or vendor support could risk the loss of critical evidence.

Not all CCTV recording systems are built with export or investigation in mind. Many legacy CCTV systems, cloud-based surveillance platforms, and proprietary DVRs limit how, or if, footage can be extracted in a usable format for forensic analysis. The DVRs are often password-protected, and the GUI is different from manufacturer to manufacturer and model to model, resulting in significant time being wasted tracking down the password or user manuals. Using WITNESS will get you to the review stage much faster, helping to find those crucial case-cracking images.
Magnet WITNESS helps bridge the gap between inaccessible systems and the need for reliable, presentable video evidence. Instead of facing delays or data loss due to export restrictions, WITNESS provides an investigator-controlled solution that works in real time.
Unified Video Workflow
Magnet Witness offers a single, streamlined solution to acquire, review, and analyse video evidence, no more hopping between tools. Cases can include video from multiple sources allowing easier understanding of what material is available for a specific time period.
Built on DVR Examiner, but Levelled Up
Evolved from DVR Examiner by adding advanced capabilities including audio recovery from DVRs.
Acquiring high quality video from cloud platforms without time consuming manual downloads.
Expanded evidence capabilities to include video from body cams, dash cams, drones, mobile phones, and more, beyond just acquisition.
Wide-Ranging Video Sources Supported
Review video from a variety of sources: native and proprietary DVR formats, body cams, dash cams, drones, mobile phones, and cloud services like Ring or Arlo. Now supports Audio too.
Simplified Review Interface
One intuitive interface supports features like:
Smart Analytics for Faster Insights
Streamlined Output & Reporting
Latest Enhancements
Supported Cloud camera platforms
Download video from cloud based camera systems.

Q: What sources of video can Magnet WITNESS acquire from?
A: Magnet WITNESS can access recordings direct from the hard drive of a CCTV DVR and access critical evidence from body cams, mobile devices, drones, dash cams, and cloud-based surveillance systems, among other sources.
Q: Can Magnet WITNESS work with proprietary video file formats?
A: Yes. Magnet WITNESS quickly accesses video data in both native and proprietary file formats, accelerating media investigations that would otherwise require separate playback software for each format.
Q: Can Magnet WITNESS recover deleted footage from a DVR hard drive?
A: Yes. Magnet WITNESS can directly acquire data from surveillance and CCTV DVR hard drives, including footage that has been deleted or partially overwritten.
Q: How does Magnet WITNESS simplify reviewing footage from unfamiliar DVR systems?
A: Magnet WITNESS reduces the complexity of evidence review by letting investigators navigate unfamiliar third-party DVR menus through a single centralised tool, rather than learning each manufacturer's proprietary software.
Q: Can I track review progress across a large volume of video evidence in Magnet WITNESS?
A: Yes. Magnet WITNESS lets you track progress and identify evidence that is still under review with an easy-to-use, feature-rich interface.
Q: Can Magnet WITNESS show footage from multiple cameras together?
A: Yes. Magnet WITNESS lets investigators quickly see the complete picture across multiple video sources, providing better understanding and context for an incident.
Q: Can Magnet WITNESS produce a report suitable for court?
A: Yes. Magnet WITNESS turns complex evidence into a court-ready report and concatenated video that tells the complete story of an investigation.
Q: Does Magnet WITNESS keep an audit trail for legal defensibility?
A: Yes. Magnet WITNESS automatically generates auditable reports for every video input and output, ensuring full transparency and legal defensibility.
Q: Will video exported from Magnet WITNESS play on any computer?
A: Yes. Magnet WITNESS removes technical playback barriers by delivering video evidence in formats that play on any computer, improving case collaboration with colleagues and legal teams.
If you require any changelogs from older dates which arent currently visable, please contact info@demux.co.uk.
Added support for the following filesystems and file formats:
With this update, time/date values and offsets are now standardized across sources, clips, and sub-clips. The information in the Clip offset form now matches the clip list details offset information according to the following logic:
The BETA analytics feature has been removed from Witness. Feedback gathered during this BETA trial is being used to develop future new features.
Added support for the following filesystems and file formats:
Upgrade Note: This update resolves an issue found in the 1.14.1 release where exporting a clip using a proprietary format resulted in Magnet Witness also exporting in the Open format. (MMP-1983).
Please view previous Changelogs for details of other new features, fixed and known issues.
Upgrade Note: This update resolves issues found in the 1.14.0 release where moving the scrub bar in frame view caused an exception and the application may stop responding (MMP-1973), and where double-clicking an image in the main gallery cause the application to stop responding. (MMP-1974).
Apply filters to video clips using a non-destructive workflow that preserves evidence. Select one or many clips from the clip list, right click, and select Enhance to open the workflow. These filters provide a consistent and repeatable way to manage clips, add to, and replace clips in the enhancement list while maintaining am unaltered version of the original clips. The Enhancements clip list displays selected video and still clips in the order they're selected from the original clip list or playlist. Details for the clip appear in sortable columns, including Id, Source name, Channels, and a Remove icon. You can apply the available filters to one or many clips in one operation, including:

The filters you apply are tracked in the History panel, and you can adjust them as required at a later time. The player reflects the filters you currently have applied.
After you have applied the filters to your specific need, you can export a still image or transcoded video clips and generate a report on the enhanced content. The export and reporting experience is consistent with the existing workflows for content without enhancements applied, including the ability to retry jobs that were not successfully completed.
After running a clip properties job, the clip’s frame resolution (such as 1920x1080) is captured and displayed in the Resolution column in the clip list. This allows examiners to distinguish full-stream videos from substream clips, helping reduce duplicate exports and streamline review.
Added support for the following filesystems and file formats:
Apply filters to video clips using a non-destructive workflow that preserves evidence. Select one or many clips from the clip list, right click, and select Enhance to open the workflow. These filters provide a consistent and repeatable way to manage clips, add to, and replace clips in the enhancement list while maintaining am unaltered version of the original clips. The Enhancements clip list displays selected video and still clips in the order they're selected from the original clip list or playlist. Details for the clip appear in sortable columns, including Id, Source name, Channels, and a Remove icon. You can apply the available filters to one or many clips in one operation, including:

The filters you apply are tracked in the History panel, and you can adjust them as required at a later time. The player reflects the filters you currently have applied.
After you have applied the filters to your specific need, you can export a still image or transcoded video clips and generate a report on the enhanced content. The export and reporting experience is consistent with the existing workflows for content without enhancements applied, including the ability to retry jobs that were not successfully completed.
After running a clip properties job, the clip’s frame resolution (such as 1920x1080) is captured and displayed in the Resolution column in the clip list. This allows examiners to distinguish full-stream videos from substream clips, helping reduce duplicate exports and streamline review.
Added support for the following filesystems and file formats:
Upgrade Note: This update resolves issues from the 1.13.0 release where physical disk sources could become unavailable or could not be relocated after saving a scanned disk query and restarting Magnet Witness (MMP-1815), and where using Sparse Disk caused previously supported filesystems to no longer be recognized (VFSE-215).
Due to recent Microsoft Windows changes, a Prerequisite Setup Wizard automatically appears when installing Witness 1.13.0. To complete this wizard:
Note: After the wizard completes, you return to the Magnet Setup process
You can now open cases stored anywhere using the files with the new .witness case extension, available under the Open a saved case area of the start screen. When you open a case in this way, Witness creates an association to the case at the location you provide, and the case appears in the Open a recent case list on the start screen. Note that this method does not move your case folder to a new location.
The Witness case folder uses a uniform folder structure to help ensure cases are well-organized, easily accessible, and can be shared or moved without breaking references. The .witness file resides in the /[CaseName_Folder] along with other files containing information about your case, including cloud data, video data, reports, and export files. When you open cases created before Magnet Witness version 1.13.0, they are updated to use the new folder structure.
Note: Folder information is provided to aid in navigating the case files. It is not recommended that you edit or update the case files from this location, nor should you change the folder structure. Any changes may cause problems opening your case.
The updated submission process for requesting unsupported filesystem or file formats enables users to quickly and easily complete the workflow using a pop-up form.
See the Magnet Witness User Guide for more information.
When you open a side tab (such as Tags, Notes, Thumbnails, Clip list details, and Preview Details), the controls are pinned by default, ensuring that you don't accidentally remove a tab, and that the display adjusts so the side tab does not cover the display area. As a result, the controls (down arrow menu, pin, and X) no longer appear on either the left or right tabs. To minimize or close the side tab, click the side tab name. If you have a side tab open and you click a different side tab, the side tab with the previous focus is automatically closed and the newly clicked side tab is displayed with the name highlighted.
These changes also update the Details pane to no longer have an autohide area.
Added support for the following filesystems & file formats:

Due to recent Microsoft Windows changes, a Prerequisite Setup Wizard automatically appears when installing Witness 1.13. To complete this wizard:
NOTE: After you complete the wizard workflow, you return to the Magnet Witness setup process.
For more information, see the How to complete the Prerequisite Setup Wizard when Installing Magnet Witness 1.13.0 knowledge base article.
You can now open cases stored anywhere using the files with the new .witness case extension, available under the Open a saved case area of the start screen. When you open a case in this way, Witness creates an association to the case at the location you provide, and the case appears in the Open a recent case list on the start screen. Note that this method does not move your case folder to a new location.
The Witness case folder uses a uniform folder structure to help ensure cases are well-organized, easily accessible, and can be shared or moved without breaking references. The .witness file resides in the /[CaseName_Folder] along with other files containing information about your case, including cloud data, video data, reports, and export files. When you open cases created before Magnet Witness version 1.13, they are updated to use the new folder structure.
Note: Folder information is provided to aid in navigating the case files. It is not recommended that you edit or update the case files from this location, nor should you change the folder structure. Any changes may cause problems opening your case.
The updated submission process for requesting unsupported filesystem or file formats enables users to quickly and easily complete the workflow using a pop-up form.
If you are connected to the internet, complete the form and submit filesystem profiler and file format files from Witness to support@magnetforensics.com.
If you are not connected to the internet, fill out the no-internet form and save the form, profiler, and associated files. When you have internet service, email the saved files.
See the Magnet Witness User Guide for more information.
When you open a side tab (such as Tags, Notes, Thumbnails, Clip list details, and Preview Details), the controls are pinned by default, ensuring that you don't accidentally remove a tab, and that the display adjusts so the side tab does not cover the display area. As a result, the controls (down arrow menu, pin, and X) no longer appear on either the left or right tabs. To minimize or close the side tab, click the side tab name. If you have a side tab open and you click a different side tab, the side tab with the previous focus is automatically closed and the newly clicked side tab is displayed with the name highlighted.
These changes also update the Details pane to no longer have an autohide area.
Added support for the following filesystems and file formats:
Fixed Issues
Known Issues
The previously available concatenation feature which enables users to join clips from any source into a single file, is being renamed to Merge. A new, simplified Concatenation feature is now available to join clips of the same format and from the same channel of a single source.
A new Merge option appears in the right-click context menu, Settings, Reports, and in the Export menu of the clip list.
Note: A concatenated file uses the best open format for the selected files, similar to the existing Export job. You cannot concatenate a filesystem that is limited to export in propriety files; instead, users should use the Merge job type.
See the Magnet Witness User Guide for more information.

The Magnet Witness clip list now includes vendor tags for cloud system sources. These tags enable you to quickly scan the results of what was identified in the clip analysis, such as movement, person, or vehicle.
See the Magnet Witness User Guide for more information.

Added support for the following filesystems & file formats:
If you create a subclip of a multimedia stream that has an unknown start time, the subclip is also saved with an unknown time. This unknown value also appears in the Clip List Report, Export Reports, Case Summary, Source Details, Clip List Details, and Preview Details.
The Magnet Witness clip list now includes vendor tags for cloud system sources. These tags enable you to quickly scan the results of what was identified in the clip analysis, such as movement, person, or vehicle.
See the Magnet Witness User Guide for more information.





A default Clip properties job now runs automatically on the first clip of each channel at scan to provide a thumbnail and detect if audio is present in the clip.
A full Clip properties job extracts thumbnails, audio details if available, and media info for all clips in the evidence source for later analysis.
You can optionally run a full Clip properties job as part of the evidence source scan, or run it after processing your evidence sources from the clip list.
After source detection, filesystem specific audio support is now included in the source properties summary. If audio is detected on a clip, after previewing or running a Clip properties job, an icon appears in the Media column of the clip list.

Added support for the following filesystems & file formats:
View clips associated with a single source to focus your analysis on that source.

If the program is interrupted during an export job, a notification will indicate which cases contain incomplete jobs when the app is restarted.
Save time by easily retrying incomplete jobs, or jobs with failed clips, from the previous jobs panel. Further, quickly add failed clips to a playlist for further inspection.

Magnet Witness will automatically select the most compatible Open format (MP4, MOV, or AVI) for the original media. The introduction of a simplified export process is an effort to reduce playback errors that stem from incompatible original media and container format pairings. You can use the "Advanced configuration" to choose a different format if required.
Proprietary (formerly known as Native) format exports have not changed.

The Playback speed control is now located to the right of the Preview player controls. Simply click on the dropdown to adjust the rate at which the video is played.

Added support for the following filesystems & file formats:
When previewing in autoplay, the next clip now preloads for faster previewing.
To avoid errors caused by applying offsets that would result in a negative date/time for a clip, the earliest date that can be entered in the Edit metadata form is now limited to 1970-01-01.
Magnet Witness now identifies if a new source filesystem and/or file format added to your case supports audio.
Audio support is now indicated in the detection results, source details panel, and export report. After a clip with audio is previewed, audio support is also indicated in the new "Media" column of the clip list.
Magnet Witness nows supports audio for the following frequently used filesystems:
(You can select AWS eu-west2 (which is London) as the storage destination)
You can set up a Magnet One account here
