What is a USM file?
A .USM file is primarily a game video file. CRI Middleware created this format. Game developers use the CRIWARE software development kit to store high-quality video cutscenes and audio. These files are very common in console and PC video games. In rare cases, a .USM file might also be a Unity Scene File.
How to open USM files?
Standard media players usually cannot open a .USM file directly. Modders and advanced users rely on specific extraction software. You can use community tools like VGMToolbox to demultiplex the hidden video and audio streams. The video is often an MPEG format, while the audio is usually an .ADX or .HCA format. After extraction, you can use command-line tools like FFmpeg or universal players like VLC media player to view the content.
Best practices and troubleshooting
Because .USM has multiple possible meanings, you must know the source of your file. If it comes from a game folder, it is likely a CRIWARE video. If you try to play it directly and see an error, the file requires extraction first. Do not rename the extension to .MP4 or .AVI because this will not change the complex internal structure of the media.
Software and tools
viewer.online/usm can analyze .USM files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available. If you need to play the file on standard devices, we recommend file conversion to sensible target formats on convert.guru. You can usually convert an extracted .USM into .MP4 or .MKV.
Summary
viewer.online/usm is useful for identifying, inspecting, and understanding .USM files without installing software or dealing with compatibility problems. Because the format can be complex, our tool helps you discover the true nature of your file instantly.