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VSE: Disk cache
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Goal of this system is to decrease delay from edit to preview.
This is not a solution for slow rendering. However to be able to preview timeline of any complexity, this tool is needed and therefore it makes sense to implement it as a first step towards that direction

In practice this system will work in a similar way to old image based VSE proxy system.

Main difference is:

  • all strip types are supported
  • any cached level can be saved
  • images are created along with a cache entry (even during playback)
  • images are deleted when cache is invalidated

Challenges to make this system work well are:

  • minimizing removal of stored images as much as possible
  • managing validity of stored images (undo, redo mainly)


Differential Revisions
D5524: VSE: Disk cache