An AJP file in the .ajp format has meaning tied to its creator, most often acting as a CCTV/DVR backup where the device stores video in a proprietary container that normal players cannot open, produced when a user exports a selected channel and time window to a USB stick or disc, and commonly bundled with or requiring a viewer such as a Backup Player / AJP Player to access or convert the footage.
If the file wasn’t generated by a camera system, an AJP may come from older software like Anfy Applet Generator or show up in CAD/CAM workflows such as Alphacam and therefore isn’t video, and you can usually tell which type you have by comparing file size and companion files—CCTV exports are large to enormous and may include viewer programs, while project-style AJP files are smaller and appear with web or CAD assets, and checking Properties or opening it in a text editor briefly can show readable text for project files versus gibberish-like binary for DVR footage.
To open an .AJP file, you need a method that reflects how it was generated, since Windows and typical video software can’t interpret it properly, and if it’s a CCTV/DVR export, your best bet is the viewer/player supplied with the footage—often located in the same folder and named something like Player.exe or BackupPlayer.exe—which you can launch to load the AJP and then use its built-in export/convert tools to save out an MP4 or AVI.
If no bundled player exists, the next approach is figuring out the system type so you can download the correct CMS/VMS or backup viewer, since many CCTV formats only decode within their manufacturer’s client; once installed, launch the client first and select Open/Playback/Local File to load the AJP, and if you can watch it but can’t export it, your last-resort option is to record the playback on screen, which isn’t perfect but may be necessary.
If the AJP file doesn’t trace back to a DVR, it may belong to older animation/app-creation tools or CAD/CAM workflows, requiring the same program that made it, so look around its folder for identifying app names, documentation, or related file types like DXF/DWG, then open it inside the correct software, noting that file size can guide you—tiny files usually mean project/config content, while huge ones are often CCTV backups.
If you prefer, you can paste the AJP’s size along with names of nearby files or a screenshot, and I can almost always tell whether it’s CCTV-related and advise which playback tool will open it.
