[mythtv-users] Steaming HDTV Performance.

Brad DerManouelian myth at dermanouelian.com
Thu Dec 21 05:04:44 UTC 2006

On Dec 20, 2006, at 9:02 PM, Brad Fuller wrote:

> Brad DerManouelian wrote:
>> On Dec 20, 2006, at 6:50 PM, BRIAN LANG wrote:
>>> I'm considering building a MythTV system.  I'm a software engineer,
>>> so I don't think I'd have any technical problems that I couldn't
>>> figure out.  I'm weighing the pros and cons of HD Tivo, WIndows
>>> Vista Media Center, and MythTV.  If I do build a MythTV system I'd
>>> likely have a backend in the basement and two font ends.  Both TVs
>>> would be HD (at least eventually).  My concern is the bandwidth.
>>> Am I really going to be able to stream HDTV shows at a reasonable
>>> rate?  What kind of performance can I expect? All 3 computers would
>>> be fairly decent machine and have gigabit ethernet.  Thanks!
>> Lots of people use the HDHomeRun to capture 2 HDTV streams over
>> 100Base-T, so it is at least able to do that. If you're going to be
>> streaming more than a couple at a time, you should definitely
>> consider gigabit (You should consider it anyway since the hardware is
>> reasonably priced now.)
> The capturing of ATSC is not really a cpu intensive operation using  
> cards (like the pcHDTV3000.) There's no encoding going on. Playing  
> 2 HD
> streams is more intensive, but since you are going to have a  
> backend and
> 2 frontends, you won't have much problems considering the use of
> moderately new CPUs and especially if you use Nvidia video cards and
> work out the XvMC kinks in your specific setup.

He's asking specifically about network bandwidth. The HDHomeRun sends  
two simultaneous HD streams over 100BaseT.

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