It is possible to edit assets residing on file-based media, such as P2 cards, XDCAM cartridges, SxS cards, or DVDs. However, Premiere Pro performs faster if you first transfer the assets to a local hard disk. Using Windows File Explorer (Windows) or Finder (Mac OS), transfer files from file-based acquisition media. Then, import the files on the hard disk into Premiere Pro projects.
When transferring files to hard disk from file-based media, transfer the folder containing all related files and all of its subfolders. Keep the folder structure intact. For example, when transferring files from AVCHD file-based media, transfer the BDMV folder and all its contents. When transferring files from DVCPRO HD media, transfer the CONTENTS folder and all its contents. When transferring files from XDCAM EX media, transfer the BPAV folder and all its contents. When transferring files from DVD, transfer all the contents of the VIDEO_TS folder, and if it exists, all the contents of the AUDIO_TS folder.