Adobe Premiere plug-in file
PRM is a file extension for a plug-in file used with Adobe Premiere. PRM files extend the useability of Adobe Premiere by adding additional features. PRM files can contain extra effects and filters used with the video editing features of Adobe Premiere. PRM files are used by Adobe Premiere, though not directly viewable.
Learn more about .PRM files:
Visit the Adobe web page.
Read about Adobe at ITKnowledgeExchange.com.