- USB drive format
- Movie file Codec format
To find movies on USB on Mac OS:
- Press Command + F key
- Click "USB" if your files are on an external drive.
- Choose Kind is movie
- Click the + icon at the end of that row.
- Choose "Other"
- Type "codec" in the search and click OK
- Then in the Codecs field type "MPEG-4 Video"
- Now you should see a list of compatible files
- Connect the USB storage device to the computer.
- Open Disk Utility.
- Click to select the USB storage device in the left panel.
- Click to change to the Erase tab.
- In the "Volume Format:" selection box, click "MS-DOS File System".
- Click "Erase" button.
- At the confirmation dialog, click the "Erase" button.