The file extension MPGINDEX is used for the index files of imported MPEG video files from various Adobe media-processing products. MPGINDEX files are automatically generated files that are created when importing or adding an MPEG video file to a project.
Above all, this measure is intended to ensure faster work with the preview. In addition, such an MPEG video file must be checked only once.
Depending on the file type, the program creates various auxiliary files (cfa, pek) in the media cache. In addition, a media cache database is created on the specific Adobe programs can share. This gives the programs access to the media caches of the other programs. (if available)
In fact, MPGINDEX files are created by the Adobe Media Encoder, a software component that is part of almost all media-processing Adobe products.
You can create or clean up cache folders under 'Edit-> Preferences-> Media & Disk Cache' (Windows) or 'Settings-> Media & Disk Cache' (Mac OS). These files are only necessary during a project and can be deleted after completion.
Most often resolving problems with opening MPGINDEX files is very simple. Just install an appropriate program that supports such files. All of the listed programs support MPGINDEX files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of MPGINDEX files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate MPGINDEX files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Adobe Premiere Pro applications is not on the list, select "Browse" option in order to manually locate the directory where Adobe Premiere Pro has been installed.
Sometimes problems with opening MPGINDEX files may not lie with the application itself, but can arise due to other causes, such as: