[olug] Mythtv

[Jay Swackhamer]

The PVR250's do HW encoding, If it is a backend-only machine, then you
could use PVR250MCE's,(I have not yet tested these, but have heard from
others using these, and I will be testing these sometime soon on the store
MythTV boxes) which would lower your cost.

2gig/hour is at the default settings, you could also set it up to
transcode after recording to cut down on the long-term storage
requirement.



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> <quote who="John Dickson">
>> Anyone here have an opion on 4 PVR-250's in a Myth box? Running
>> simultaneously. Six hours a day seven days a week 52 weeks a year.
>>
>> I am also searching for a way to pull VBI data (cc) from video. Myth has
>> a
>> spot in setups that deals with closed captioning which gives me some
>> hope.
>
> Have you done the math on the rate of HDD usage per minute/hour/day for
> what you want to capture?  From the MythTV.org HowTo file, the range is
> anywhere from 700MB/hour (MPEG-4?) to 2GB/hour (MPEG-2 / RTjpeg?) [1].
> Doing the math, that's (1GB..2GB/hour) * (6 hours/day) * (4 channels) ==
> 24 to 48GB per day -- guess that's not as bad as I was expecting. :)
>
> Do the PVR-250's do HW encoding?  If not, then from what I have heard, an
> Intel P4-3GHz might be minimal to keep the encoding of four simultaneous
> streams.
>
> Mind if I ask the application this is for?  If it is for monitoring CCTV
> for security/etc, then sub-700MB/hour will be fine.  If it is for archival
> of HDTV and/or custom DVD burning then the 2GB/hour might be more in line.
>
> I too have a box downstairs that is earmarked as a Myth server in the near
> future... :)
>
> Dan
>
> 1: http://www.mythtv.org/docs/mythtv-HOWTO-3.html#ss3.1
>
> - - - - -
> "I do not fear computer,
> I fear the lack of them."
>  -- Isaac Asimov
>
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-- 
Jay Swackhamer
Reboot The User
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