Cablecos have gone from 64 QAM to 256 QAM to better accommodate the HD needs of their subs and is similar to the QPSK to 8PSK migration that *C is currently undertaking.
These are both excellent ways to gain additional bandwidth while preserving the heavy investment in existing MPEG2 compression technology.
MPEG4 is a handy solution as well, but comes with it's own issues.
Just like Bells MPEG4 dilema, other MPEG4 set top deployments are hampered by the massive inventory in MPEG2 STB's.
In addition, a lot of existing infrastructure just doesn't play with MPEG4 at all, particularly for cablecos.
In theory, it should be easier for DTH/DBS providers to do MPEG4 as they need only deal with a single uplink and then user set tops.
Even though the last 2 *C HD units are MPEG4 ready out of the box with many 10's of thousands already deployed, it will be their attachment to the cable world that either delays them are they go the cost alone.
Their 8PSK swap is requiring upgrades to existing headends.
I DO like the idea of moving into 8PSK initially for it's 3/2 gain over QPSK and then later on leveraging MPEG4 for another doubling of B/W once the cost of infrastructure goes down and the selection and reliability goes.
I fear that Bev is being dragged along due to their affiliation with Echostar and hasn't considered all the possibilities and costs.
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