A computer-implemented method is described for processing multimedia
channels comprising: encrypting a first group of multimedia channels
using a first type of encryption to produce a first group of encrypted
multimedia channels; encrypting the first group of multimedia channels
using a second type of encryption to produce a second group of encrypted
multimedia channels; concurrently transmitting the first group of
encrypted multimedia channels with the second group of multimedia
channels to a plurality of multimedia subscribers having multimedia
receivers capable of decrypting the first group of encrypted multimedia
channels and/or the second group of multimedia channels.Also described is
a method comprising: receiving a plurality of channels from content
providers at a cable headend; simulcasting premium cable channels to a
plurality of subscribers in both a first encrypted format and a second
encrypted format; and tran smitting non-premium channels to the plurality
of subscribers in a non-encrypted format.