Now, instead of having to send video data, you only have to send a representation of the facial movements so that the recipients can render it on their end.
The MPEG-4 part 2 actually had something like that, called "face and body animation (FBA)". As far as I know, there are no implementations in widespread use.
The MPEG-4 part 2 actually had something like that, called "face and body animation (FBA)". As far as I know, there are no implementations in widespread use.