[mythtv-users] CPU power for digital tuners

[Dylan Egan]

Jon Whitear wrote:

>>>I currently just record normal SDTV, if I were to start HDTV what
>>>should I be looking at? 
>>>
>>>      
>>>
>>Just a note on the three cards, I assume you're talking about PVR
>>(hardware mpeg encoders) style of cards?
>>    
>>
>
>I take it you mean DVB cards - you might want to check out the mailing
>list at linuxtv.org for any issues running multiple cards in one
>machine. On the whole, it seems it's not a problem.
>  
>
I am currently using one VP card, but now that there are DVICO drivers I 
might try one or two of those cards.

>CPU power isn't going to be an issue for a backend only box. I have one
>DVB-T in my P3 500, and that uses about 6% CPU while recording.
>
Yeh im running it on a 2000+ XP.

> On the other hand, general throughput (e.g. PCI bus, HDD) might become a
>problem. Here in Oz, SD broadcasts are about 6Mbit/s, and I think HD are
>10-12. If you've got a few cards recording HDTV at the same time, you'll
>want to make sure you've got a pretty quick disk subsystem.
>  
>
Hrmph yeh I didnt really consider that. Im using that machine as a file 
server too, it used to be a mail/web server too, but I moved that to 
another machine. Maybe I can have 2 machines splitting 4 cards or so, so 
2 in each. Im running 1 SATA drive at the moment.

Dylan.

>Cheers,
>
>Jon
>
>  
>
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