Trim.464afc88-ef03-4736-b7f1-cb89a7d1e88b.mov -

: Since this is a "trimmed" version, you likely have a longer "master" version of this video somewhere in your library. If you need to save space, check if you still need both.

: This is a QuickTime file format. On iPhones, these are typically encoded using H.264 or HEVC (H.265) , which provide high quality at smaller file sizes. Why you might be seeing it trim.464AFC88-EF03-4736-B7F1-CB89A7D1E88B.MOV

: The long sequence (464AFC88...) is a UUID (Universally Unique Identifier). It ensures that even if you trim multiple videos, no two files will have the same name. : Since this is a "trimmed" version, you

: Simply double-click it to open in QuickTime or Photos . trim.464AFC88-EF03-4736-B7F1-CB89A7D1E88B.MOV