Just to be clear, this is not the same as sorting by name within Stream itself, as per this post:
I am specifically referring to the ability to sort videos in the Microsoft Stream SharePoint WebPart. Sorting by Name is not an option within this WebPart, however it is available in Stream itself. I have had numerous customers highlight their frustration at the inconsistency in this behaviour when adding channels to SharePoint pages.
Please add the option to sort by name to the Microsoft Stream SharePoint WebPart