An apparatus generally comprising an input circuit, a storage circuit and an output circuit is disclosed. The input circuit may be configured to generate a first intermediate signal from a plurality of input video signals. The storage circuit may be configured to (i) organize the first intermediate signal into a plurality of sequences each related to one of the input video signals and (ii) generate a second intermediate signal from the sequences. The output circuit may be configured to generate an output video signal by compressing the second intermediate signal.