Thank you very much. I freaked out and deleted them all, but I'm sure there will be more. I was afraid open them but I'll look at the file info next time one comes in.
Thanks again!
For the last several weeks, I occasionally get short video clips of/from people I do not know. How did they get access to my gallery app? I have checked permissions and privacy settings for all my apps and they look OK. Where are these coming from?