said by Streetlight:
It seems from reading this thread that a System on a Chip (SoC) is required or at least the best way to accomplish this. Do the new X1 boxes have this built in? They're apparently testing them here in Colorado Springs, but I certainly haven't been approached. It also seems CC is handing them out to folks who have triple play, and I just have Cable TV and HSI.
FYI: SoC is a term for a highly integrated processing solution, it combines what in years past would be separate chips to make a system (in this case a cable box). Hence the term system on a chip.
For example: the set-top box oriented SoC solutions from Broadcom integrate: a low power general purpose CPU, video and audio processing/decoding, a SATA interface for a hard drive (DVR), and all common audio/video output circuitry (HDMI, component, composite, stereo audio), and more.
And yes the X1 DVR has state-of-the-art stuff under the hood.
Comcast isn't deploying anything new that does not decode MPEG4. All the semiconductor companies making the chips (SoC) that power the cable boxes all have MPEG4 decoding built-in now.