F&O allows you to attach notes and files to records, which you can utilize for this purpose.
First of all, decide whether you can upload videos through F&O or you want to store them somewhere else. For example, you may already have them on SharePoint and you'll add a mere hyperlink in F&O.
Go to Organization administration > Document management > Document types and define a type. Add items and/or products tables to Organization administration > Document management > Active document tables (if they aren't already there).
Then go to a form with items or products, select a record and click the paperclip icon in the top right corner to open the attachments form. Click the New button, select your attachment type, and either upload the file or add a link.
As far as I am aware, you can only add photos to any product and not videos.
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