I am synchronizing photos from my local library to the cloud. It appears that it thinks it is done uploading as of a few days ago. My local library is 369GB, but iCloud says I'm only using 295GB of storage for photos and videos. Any idea what the difference is? Looking at them, it isn't obvious what it is yet but there must be something missing from iCloud. Are there certain types of videos that it wouldn't sync? That sort of thing?