An AJP file with extension .ajp is defined by its origin, usually showing up as a CCTV/DVR backup where the device saves video in a proprietary container that normal apps can’t read, generated after selecting a camera and date/time for export to USB/CD/DVD, and typically relying on a companion viewer such as a Backup Player or AJP Player to view and sometimes convert the footage.

If the file wasn’t produced by a CCTV system, an AJP may come from legacy tools like Anfy Applet Generator or CAD/CAM utilities like Alphacam, which means it isn’t video, and you can figure out which one you have by inspecting file size and folder neighbors—camera-export AJP files are very bulky and may show up next to player executables, while project-type AJP files are lightweight and appear beside web or CAD items, and checking the file’s Properties or glancing at it in a text editor can reveal readable config-like text for project files versus
unreadable binary for DVR exports.
To open an .AJP file, the proper step varies by its source because Windows and standard video players don’t identify it correctly, and if yours came from a DVR export, the recommended solution is to look in the same export directory for the included playback tool—names like Player.exe, BackupPlayer. If you have any sort of questions pertaining to where and exactly how to use
AJP file reader, you could call us at the web site. exe, or AJPPlayer.exe—launch it, load the AJP, and then use its export/convert feature to obtain a normal MP4 or AVI file.
If nothing came with the AJP file, your best move is to find out the DVR/NVR brand or the software normally used for live viewing, then install the vendor’s official CMS/VMS/backup player, because many systems only decode AJP through their own client; after installation, open that client manually and use its Open/Playback/Local File function to load the AJP, and if playback works but export is unavailable, the last workaround is a full-screen screen recording, which is less than ideal but sometimes unavoidable.
If the AJP didn’t originate from surveillance equipment, it might be used by outdated animation tools or CAD/CAM software, meaning it requires the original application to open it, so check the surrounding folder for hints such as project-related filenames, readmes, or CAD formats like DXF/DWG, then install the correct program and open the file through it, noting that smaller sizes usually fit project files while very large sizes resemble CCTV containers.
If you prefer, you can tell me the size along with names of nearby files or a screenshot, and I can almost always confirm if it’s a DVR export and advise which playback tool will open it.