  Nowadays, an enormous amount of videos are streamed every day to countless
users, all using different devices and networks. These videos must be adapted
in order to provide users with the most suitable video representation based on
their device properties and current network conditions. However, the two most
common techniques for video adaptation, simulcast and transcoding, represent
two extremes. The former offers excellent scalability, but requires a large
amount of storage, while the latter has a small storage cost, but is not
scalable to many users due to the additional computing cost per requested
representation. As a third, in-between approach, network-distributed video
coding (NDVC) was proposed within the Moving Picture Experts Group (MPEG). The
aim of NDVC is to reduce the storage cost compared to simulcast, while
retaining a smaller computing cost compared to transcoding. By exploring the
proposed techniques for NDVC, we show the workings of this third option for
video providers to deliver their contents to their clients.
