Hello @user8434 ,
Video file types are not a compatible file type for upload. Additionally, video files are generally far too large to attach to and send in emails, therefore we have no plans to allow them for import or attachment.
Videos need to be hosted on a dedicated video site, social platform, or cloud drive, and then linked to. For sites with dedicated video players, the video block can be utilized. For cloud drives and other non-video sites, you'd need to link using an image, button, or some text.
See also:
Inserting text links
Inserting image links
Inserting button links
... View more
