Large Files:
The app does a deep search into a folder of your choice (and any sub-folders), allows you to filter them by size.
Now that all of your videos are aggregated in one list you can choose to delete them.

The app can break large videos to smaller chunks of your choice.
The app has a trimming tool that maintains the original video quality, at the end of the trimming operation you have a choice to delete the original file.

Duplicates:
Will go through every thumbnail in the duplicates list and do its magic. It will then group all matching duplicate videos.
Verifies that the groups contain only matching thumbnails. The group will remain unchanged
AI will find any matching thumbnails in a group and will discard the rest.
Groups with invalid thumbnails will be removed.
AI will automatically choose one thumbnail in the group, and mark it for save, the rest will be marked for delete.