Please use English so that
• more people can be able to help
• more people can benefit from Your Question
Google translate gave this
hur jag kan skriva foton i släpvagnar?
Hej, jag gör en släpvagn, som du kan skriva in bilder?
how I can print photos in trailers?
Hello, I'm making a trailer, which you can print pictures?
And I've hard to understand it - My Guess is that You try to put photos into a trailer (under construction) - Many things can not be done here - BUT Trailer must be converted to a Standard iMovie Project and Then one can add photos and do all that one use to be able to do in any iMovie Project.
If I didn't get it (very possibly so) - Please write again and in English and I or others might understand better.
Yours - trying to be of help - Bengt W