[olug] Mythtv

[Daniel Linder]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


<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

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)

iD8DBQFBN5BfNiBNyqUzGb8RAl13AJ4sYiA+cVWudyiJLEmtxoOjqJwn/ACeOsQM
wGwaPFcY0p7jI/G25norXlw=
=KTvx
-----END PGP SIGNATURE-----