Usually if I want to change a property on several video clips, such as applying a colour correction I follow this work path:
- Change one of the clips the way you want.
- Copy the clip to the clipboard "Cmd-C" without the quotes.
- Deselect that clip and Cmd-select all other clips you want to affect the changes to.
- Paste the first clip's attributes to all the others by hitting "Option-V".
- A dialogue box will appear. Put a checkmark in the boxes you want copied to the other clips.
- Click OK.
If all your pictures have the same common name you may be able to use the Find command within FCP to select all the pictures at once instead of having to Cmd-select them all one by one.
- Don