2009/5/8 Andrew Herron
<totallymaxed@gmail.com>
This is a very popular feature in the Sky+ & SkyHD PVR's from Sky here in the UK as it enables them to offer the ability to rewind 'Live TV' in an ad-hoc way (at least to the point where you switched over to the currently viewed channel)
I agree it must put extra wear & stress on the hard drive and yes the energy usage must be higher.
There's no need for this stream to reach disk. A 512MB in memory buffer should be sufficient, and ram is cheap these days.