Blackmagic Forum

John Paines wrote:Readers other than Andrew who are interested in this question can refer to

https://forums.adobe.com/thread/2152942

It's a post from Adobe tech support, dated January 2017, which reads in part:

When importing video and audio into Adobe Premiere Pro, it processes versions of these files that it can readily access for faster performance. These are referred to as "media cache" files. These are stored in the Media Cache Files folder. In addition, there is a folder containing a database, which retains links to each of the media cache files. These are referred to as "media cache database" files. They are located in the Media Cache folder.

Current users of Premiere need only have a look at the appropriate directory, to confirm that the folders Premiere creates can become quite large:

Mac: /Users//Library/Application Support/Adobe/Common
Windows: \Users\<username>\AppData\Roaming\Adobe\Common

And no Andrew, I'm not going to re-install Premiere , so as to provide you with a few gigabytes of files. You wouldn't believe me anyway. Premiere users have all the evidence at hand, and can come to their own conclusions, they don't need either of us.