Notes about the H3R file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The H3R file type is primarily associated with 'H3R Panasonic Video Camera File' by Panasonic Corporation of North America. H3R is a very high-compression, tamper-proof proprietary video format sometimes used for security cameras. A VIEWER.EXE program is usually provided with the camera for viewing these files. There is no general conversion program at this time of this entry.
Detailed information for file extension H3R:
Primary association: H3R Panasonic Video Camera File
File classification: Video
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.