Hi @Seju
Thank you for your request.
I recommend that you make a loss and found report: https://lostandfound.sbb.ch/home/sbb/SBB/app/lossrecords/new/items/0/category
Our lost property service, enables you to report forgotten or lost objects via the Internet, telephone or at the ticket counter. We balance our records daily of the found with the lost objects. In any case, after four and ten days you receive a search report either per SMS, e-mail or letter.
According to my information, there are no videos on the Eurocity-trains.
I hope you will find your luggage again.
Greetings
Nicolas