Use difference video from cache

[lukas-monet]

User story

1. As a user
2. I want that the difference video from the cache is used if present
3. So that I save time

Acceptance criteria

• if there is a difference video present on the file system of the current two selected videos then the difference video of the file system should be used instead of computing the difference video again
• if there is no difference video present on the file system of the current two selected videos then the difference video should be computed

Definition of done (DoD)

• Create feature branch
• Implement the functionality
• Opened pull request and assigned reviewer
• If necessary: required changes are implemented
• Delete feature branch
• If necessary: Component Test has been written
• Code review has been completed and code has been merged

DoD general criteria

• Feature has been fully implemented
• Feature has been merged into the mainline
• All acceptance criteria were met
• Product owner approved features
• All tests are passing
• Developers agreed to release