What is a CPI file?
A .CPI file is most commonly an AVCHD Video Clip Information file. Digital camcorders from Sony and other manufacturers use this format to store metadata about high-definition video clips. The .CPI file contains details like frame rate, aspect ratio, and timestamps. It does not contain the actual video data.
Because the .CPI extension is used by different systems, it can have multiple meanings. Some .CPI files are Keyboard Expansion Pack data files used by Yamaha Corporation instruments. Others are FreeArc compressed game data archives for Capcom games, or Codepage Information files from Microsoft.
How to open CPI files?
Because .CPI has multiple possible meanings, we recommend using viewer.online/cpi to identify the actual format of your file. viewer.online/cpi analyzes .CPI files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Software and tools
If your file is an AVCHD Video Clip Information file, you usually do not open it directly. Instead, media players like VLC media player or video editors like Adobe Premiere Pro read the .CPI file automatically when you play or import the associated .MTS or .M2TS video files.
For Yamaha music files, you can use the Yamaha Expansion Manager to load the data onto compatible instruments.
Best practices and troubleshooting
Users often try to play a .CPI file thinking it is a video. If you want to watch the video, look for the corresponding .MTS or .M2TS file in the same folder structure. You cannot convert a .CPI file to video because it only holds text metadata. However, you can easily convert the related video files to standard formats like .MP4 or .MKV on convert.guru.
Summary
viewer.online/cpi directly opens and previews .CPI files in the browser, eliminating the need to install software or troubleshoot compatibility issues.