Not only is the required storage space enormous, but the network bandwidth needed to transmit an uncompressed video like that would be enormous, at 249 MB/sec-not including audio and overhead. A fairly typical 30 minute video conference would need about 447.9 GB of storage, and a 2-hour movie would take almost 1.79 TB (that is, 1790 GB).
Imagine the amount of data needed to store uncompressed video: Due to the sheer size of uncompressed video data, it's necessary to compress it significantly in order to store it, let alone transmit it over a network.