About half a year ago I shot family video about 10 minutes long: it was my son's birthday.
During post-processing I cut it down to about 7 minutes and added 40 seconds of slideshow using copyrighted performance of classical music for background. I also own the purchased CD with this performance, if that is important.
I uploaded this video to YouTube, but since it is my private video, I did not list it in the catalog. Instead, I just sent the links to the video to my family members -- this is the only way how the video can be accessed, there is no public link.
Now I got the message from YouTube that copyrighted content had been detected in my video and that it may be deleted, even though there is nothing concrete and I can do nothing against it.
My question is whether this use of copyrighted music can be considered fair use or do I require a special permission for the music in slideshow, especially taking into account that it is quite short?