I don't know how a video invitation would work?
Currently there's a 'special effort' to spend extra time in the ministry, and 1,000's of leaflets are ordered.
To start with, the leaflets are used like at any other time, ie. knock, discuss, invite, but the week before the memorial the elders notice we still have 5,000 leaflets in the cupboard so it's a crazy post-fest for the remaining few days.
Villages are swept through in a day, housing estates gobbled up by maniacal leafleteers.
Stopping to show a 3 minute video to everyone would kill the number of leaflets posted (which, don't forget, are now included on your monthly report), and would leave the congregations with boxes of memorial invites.
Maybe the news is that the Memorial will be prerecorded by a GB member and broadcast into each hall.
Splash.