[mythtv-users] Playback looks at screensize not at monitor or windowsize
Michael T. Dean
mtdean at thirdcontact.com
Sun Jun 14 22:12:11 UTC 2015
On 06/14/2015 01:59 AM, Karl Newman wrote:
> On Sat, Jun 13, 2015 at 9:33 PM, Hika van den Hoven <hikavdh at gmail.com
> <mailto:hikavdh at gmail.com>> wrote:
>
> Hoi Karl,
>
> Sunday, June 14, 2015, 5:59:13 AM, you wrote:
>
> > On Fri, Jun 12, 2015 at 12:12 PM, Michael T. Dean
> <mtdean at thirdcontact.com <mailto:mtdean at thirdcontact.com>>
> > wrote:
>
> >> On 06/12/2015 09:42 AM, Karl Newman wrote:
> >>
> >>> On Thu, Jun 11, 2015 at 11:58 PM, Michael T. Dean wrote:
> >>>
> >>> and should not (ever--for anyone, even without Xinerama) set
> the Playback
> >>>> setting:
> >>>>
> >>>> Video aspect override
> >>>> When enabled, these will override the aspect ratio specified
> by any
> >>>> broadcaster for all video streams.
> >>>>
> >>>> where, if (for anyone at all) it seems like "Video aspect
> override" needs
> >>>> to be set to get a proper display, you have misconfigured
> something else
> >>>> (like, for example, your X configuration for DPI/DisplaySize).
> >>>>
> >>>> I dunno, I use this setting and it seemed to be the only way
> I could get
> >>> recordings to display correctly. My recordings are all 4:3 (from a
> >>> PVR-500)
> >>> and my TV is also 4:3, but I have to drive it with an HMDI to
> Composite
> >>> converter which looks like a 16:9 target to the computer. So
> setting the
> >>> aspect override to 16:9 is the only way video displays
> correctly on the TV
> >>> (otherwise it would squeeze and letterbox horizontally).
> >>>
> >>>
> >> That just means you have X misconfigured. If you're displaying
> the image
> >> on a physical display with a 4:3 aspect, you need to tell X to
> use a 4:3
> >> aspect. I realize you're saying that the "autodetection" picks
> up 16:9,
> >> but you need to override that with an explicit setting because
> it's wrong.
> >>
>
> > Any hints about how I'd do that? I searched around for setting
> the aspect
> > ratio on X but didn't turn up anything obvious. Maybe it just
> assumes
> > square pixels? If that's the case then I really do need that
> setting in
> > myth. Eventually it will be a moot point when I get around to
> buying a new
> > TV, but this is what I'm stuck with for now.
>
> > Karl
>
> I don't know if it will have effect, but you say your pixels are not
> square. You can specify this in the Screen section with option "DPI".
> I have: Option "DPI" "100x100". If you have displaysize specified in
> your Monitor section, eg. DisplaySize 400 300, it should calculate the
> DPI from that.
>
> Yes, I do have DisplaySize set in a 4:3 ratio, but I think the HDMI to
> composite adapter mangles the picture unless it comes in a 16:9 ratio.
> I guess I could put in a fake DisplaySize but that seems wrong.
More wrong than putting in a fake aspect ratio for MythTV? Either way
you're lying--one way to just MythTV (meaning other programs will
display wrong) and the other way to X.
> Maybe the same amount of wrong as setting it in Myth?
Exactly.
Note, too, that DPI, DisplaySize, and many others are often ignored
(and/or invalid--DPI is nvidia-specific) depending on what drivers
you're using. You may have to include things like IgnoreEDIDDPI or such
to get the X drivers to listen to what you're saying.
What does:
xdpyinfo
give?
Mike
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