[mythtv-users] pcHDTV support for normal TV over PVR-350

John Thomas jwt9478 at gmail.com
Tue Oct 19 15:05:38 UTC 2004


On Tue, 19 Oct 2004 04:43:29 -0400, Michael T. Dean
<mtdean at thirdcontact.com> wrote:
> John Thomas wrote:
> 
> >On Sun, 17 Oct 2004 23:57:37 -0400, Matthew Gleed <mgleed at gleed.us> wrote:
> >
> >
> >As far as recording size, tt completely depends on the codec bit rate
> >that you set in the MythTV settings/configuration.  Mine is at 4400
> >and that equates to about 1 GB per hour of recording MPEG2 off of a
> >PVR-250.
> >
> 4400kbps (video) equates to approximately 2GiB/hr.
> 
> 4400kbps * 1000bits/kb = 4400000bits/s * 1B/8b = 550000B/s * 3600s/hr =
> 1980000000 B/hr * 1GiB/1073741824B =  1.844GiB/hr
> 
> Add in audio, and you've got 2GiB/hr.  (Audio at 256kbps gives
> approximately 110MiB/hr and 384kbps gives approximately 165MiB/hr.)
> 
> Therefore, you either have an average bitrate of 2200kbps with a max
> bitrate of 4400kbps, or your files are twice as large as you remember.  :)
> 
> Mike
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> 
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You are correct.  I am at 2200 kbps.  I didn't have my box in front of
me to verify.

Congrats!!!!!


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