[mythtv-users] Hauppauge HD-PVR: Photos and link to pre-order
brian.phillips at gmx.net
Tue Apr 8 00:44:11 UTC 2008
David George wrote:
> MPEG 4 encoding is extremely CPU intensive. To date there are no
> chips that can encode two streams of raw HD data. With the size and
> price point Hauppauge has aimed for it wouldn't be cost effective to
> have a dual device. Even the highest performance TI DSP can't encode
> two HD streams simultaneously (although it can encode a stream and
> decode another at the same time). That isn't to say that someday
> there will not be a dual device. Remember the PVR-500 came out
> *several* years after the single tuner Hauppauge PVR cards.
> Also when talking about power, these are not PC's. They have very
> low power requirements compared to a PC.
So put two DSPs on a single PCB. That's what the PVR 500 does and probably
(I haven't peeked inside) what the HDHR does. No one says they have to use
a single DSP to do it. Anyone have an idea of what the cost of the DSP
they're using is? I don't imagine the DSP is the whole $250. Even if the
chip was $50, that's still a $350 price point, or slightly more, to put two
devices in the same footprint. If it needed to be slightly larger, so be
it, but I doubt it would have to double in size and price just because it
required another DSP.
I could be wrong though as I don't actively price DSPs...
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