Move or clean the media cache database – Adobe Premiere Pro CC v.7.xx User Manual
Page 101
Note:
Note:
Note:
On Windows, specify only partitions formatted for the NTFS file format as scratch disks. On Mac OS, use partitions formatted for Mac OS
Extended. FAT32 partitions are not recommended for video. They do not support large file sizes.
Third-party tools are available that allow NTFS drives to work with Mac OS. See
and
On Mac OS, disable journaling for best performance.
Specify your fastest hard disks for capturing footage and storing scratch files. You can use a slower disk for audio preview files and the
project file.
Specify only disks attached to your computer. A hard disk located on a network is usually too slow. Avoid using removable media because
Premiere Pro always requires access to scratch disk files. Scratch disk files are preserved for each project, even when you close the project.
They are reused when you reopen the project associated with them. If scratch disk files are stored on removable media and the media are
removed from the drive, the scratch disk is not available to Premiere Pro.
You can divide a single disk into partitions and set up partitions as scratch disks. However, partioning doesn’t improve performance because
the single drive mechanism becomes a bottleneck. For best results, set up scratch disk volumes that are physically separate drives.
You can capture audio and video to separate drives, if supported by the format codec. (The native DV and HDV capture in Premiere Pro
does not support capturing audio separate from video.) Set the locations for new files by choosing Edit > Preferences > Scratch Disks
(Windows) or Premiere Pro > Preferences > Scratch Disks (Mac OS). If you don’t change the defaults, all files captured or created by
Premiere Pro are stored in the same folder in which it stores the project files.
Online resources for improving system performance
advice from experienced users on setting up disks for a video editing system.
For a collection of videos and articles about making Premiere Pro work faster can be found
learn about hard disk setup for optimum performance in Adobe Premiere Pro and After Effects.
To learn how to format a disk as NTFS on Windows,
To learn how to format a disk as HFS+ on Mac OS,
. The information on this page is valid for Mac OS
X 10.4-10.7
Move or clean the Media Cache Database
When Premiere Pro imports video and audio in some formats, it processes and caches versions of these items that it can readily access when
generating previews. Imported audio files are each conformed to a new .cfa file, and MPEG files are indexed to a new .mpgindex file. The media
cache greatly improves performance for previews, because the video and audio items do not need to be reprocessed for each preview.
When you first import a file, you may experience a delay while the media is being processed and cached.
A database retains links to each of the cached media files. This media cache database is shared with Adobe Media Encoder, After Effects,
Premiere Pro, Encore, and Soundbooth, so each of these applications can each read from and write to the same set of cached media files. If you
change the location of the database from within any of these applications, the location is updated for the other applications, too. Each application
can use its own cache folder, but the same database keeps track of them.
Choose Edit > Preferences > Media (Windows) or Premiere Pro > Preferences > Media (Mac OS), and do one of the following:
To move the media cache or the media cache database, click the respective Browse, button.
To remove conformed and indexed files from the cache and to remove their entries from the database, click Clean. This command only
removes files associated with footage items for which the source file is no longer available.
Before clicking the Clean button, make sure that any storage devices that contain your currently used source media are connected to
your computer. If footage is determined to be missing because the storage device on which it is located is not connected, the associated files
in the media cache is removed. This removal results in the need to reconform or reindex the footage when you attempt to use the footage
later.
104