[mythtv-users] Always use the HD PVR and retire my PVR 250, or continue to use both in same recording group

James Orr james.orr7 at gmail.com
Sat Jun 26 04:28:29 UTC 2010


On Sat, Jun 26, 2010 at 12:20 AM, John P Poet <jppoet at gmail.com> wrote:

> On Fri, Jun 25, 2010 at 9:22 PM, James Orr <james.orr7 at gmail.com> wrote:
> >
> >
> > On Fri, Jun 25, 2010 at 10:19 PM, John P Poet <jppoet at gmail.com> wrote:
> >>
> >> On Fri, Jun 25, 2010 at 8:13 PM, Yeechang Lee <ylee at pobox.com> wrote:
> >> > John P Poet <jppoet at gmail.com> says:
> >> >> If the quality via the HD-PVR is lower, you probably have the
> >> >> bitrate on the HD-PVR set too low.
> >> >
> >> > Speaking of bitrates, how optimal are the settings in the default
> >> > HD-PVR recording profile? Is there room to tweak them, or are they
> >> > about as good as VBR bitrates for the device can get?
> >>
> >> I am not even sure what the current defaults are.  I have been using
> >> my HD-PVRs since before Myth had defaults for the HD-PVR :-)
> >>
> >> As far as what the defaults should be, that is a good question.  I
> >> would assume most people using the HD-PVR are more concerned with
> >> quality than file size.  Personally, I use max bitrate VBR by default,
> >> and max bitrate CBR for "high quality" (e.g. sports events).
> >>
> >
> > That's actually a good idea, though I'd probably do it the other way
> around
> > (CBR for shows/movies and VBR for sports and maybe documentaries).
>
>
> So, you would use "high quality" for shows/movies, and "default" for
> sports.  Or, I suppose you could use CBR as the "default" mode, and
> VBR in the "low quality" mode.
>
>
> > The defaults on the HD-PVR were ...
> >
> > Low Avg - 4,500, Low Max - 6,000
> > Med. Avg - 9,000, Med. Max - 11,000
> > High Avg. - 13,500, High Max - 20,200
>
>
> Low, Med, High meaning "out of the box" default mode rates for 480i,
> 720p and 1080i, right?  Do you know what the "high quality" is set to
> "out of the box"?
>
>
> Yeah, that's right.  The default, high quality and low quality profiles all
have the same default values.  The 1080 (high) bitrate is the maximum the
sliders will allow for both average and max.
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