Ben Scott wrote: > On Thu, Jul 24, 2008 at 6:36 PM, Frank DiPrete <[EMAIL PROTECTED]> wrote: >> I like the HDHomeRun card ... > > Just to make sure it's clear, the HDHomeRun isn't a card, it's an > external box (about the size of a cigar box). It uses a wall-wart > type power supply transformer. > >> If the card had hardware encoding it would be perfect. > > Encoding or decoding?
Encoding on the backend where the card goes. http://www.pchdtv.com/hd_5500.html The HD-5500 Hi Definition Television PCI Card is an universal PCI 2.2 compliant card. The card receives NTSC, ATSC and Cable/QAM Signals and converts them to digital streams which are transported across the PCI bus. Display and MPEG2 decoding are done on the host computer > > For digital broadcast -- be it cable or ATSC OTA -- the stream is > already encoded and compressed as part of the transmission process. > There's no need for an encoder. > The description isn't clear about writing the streams to disk. The goal is to write mpeg2 files to the server for playback like the pvr-250 does via its encoder. I'd like to believe that the term "digital streams" means mpg2/aac but the term "digital streams" isn't defined on the site. I'll check some mythtv sites about this card to see what is involved. > The HDHomeRun is digital only; it doesn't even have an NTSC tuner. > So, to the best of understanding, the HDHomeRun has no use for a > hardware encoder. The HD-5500 does have an NTSC tuner; I don't know > if it has a hardware encoder or not. Presumably, if you're buying an > HD-5500, the plan is to switch to digital TV, so NTSC shouldn't > matter. > Also true. I would not be using an ntsc tuner. > For decoding, I believe you'd still be able to use the "small quiet > diskless box frontend". The one thing I'm not sure about is: I expect > not all hardware decoders are created equal. It may be the decoder in > your front-end box can't handle this new-fangeled high-def stuff. > The only prediction I have here is "probably OK". playback of the recordings I make today (ntsc analog to mpg2/aac at 48K sampling - file is a bout 2G per hour) takes 25% of the via cpu while using the mpeg decoder chip. > -- Ben > _______________________________________________ > gnhlug-discuss mailing list > gnhlug-discuss@mail.gnhlug.org > http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/ > > _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
