Ah ok thanks, anyway when I archive my project I think I can just manually delete them right ?
What is that CLEAN in media Cache Database (Preferences/Media) for ?
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Yep; don't bother backing up the preview files.
The Media Cache Database tracks the location of files and the cache files created from them (e.g. CFA, MPGINDEX, etc.). The goal is that all apps in the Adobe suite don't regenerate these files, but can use those generated by one of the other programs. It's a good process to go through after you've cleaned out a project and taken it offline.
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Deleting preview files for a specific project is really simple to do at the OS level.
For example, if you have indicated a custom preview file location,
a folder will be created named 'Adobe Premiere Pro Preview Files'
that will contain folder(s) that have the same name as each of your projects.
Select the folder(s) that have the same name as your project, and delete.
I need to work on my typing speed.
Right, but that's sort of a brute force tactic--you lose all preview files unless you can pick out the relevant ones from the cryptically named preview files. What is missing from Premiere Pro is a "Delete Unused/Inactive Render Files" command that would eliminate old or unused previews, and retain those which are in use by a currently-rendered sequence. Avid had/has a rather convoluted way of deleting unused "precomputes," but it was effective in slimming down a project and still maintaining your desired render files. Premiere Pro is behind on this.
That said, NO previews being required would be even better
Right, but that's sort of a brute force tactic
True... there's not much finesse in this method,
but it works fine in the context of cleaning up after a completed project.
I do agree there could be better in-program preview file management.
I'd like to reignite this thread. I would have thought that Adobe would have come up with a better solution for this by now. I pretty much exclusively use DNxHD HQX (10bit) for all my preview files safe in the knowledge that when I do my final encode I can render from these and I am rendering from an extremely high quality source. However it does lead to huge amounts of unneeded data being left on my drive when changes happen in the edit and these files are no longer needed. A 'Delete unused preview files' command is needed. As others have said, deleting files at OS level is way too clumsy.
Thanks. I am fully aware of this. I am also fully aware that I have been sending legitimate feature requests such as this one for years and not once have I ever received a reply back to even let me know if they have ever been read by a human.
You will not receive a reply.
They have been read and tucked nicely in a big database...
Maybe I should put in a feature request for Adobe to reply to feature
The fact that they don't is a joke to be honest but that's Adobe customer
service for you. As a paying customer of over 15 years the least I expect
is a reply from them when I take the time out of my day to try and make
their products better.