[mythtv-users] Playback looks at screensize not at monitor or windowsize
Karl Newman
newmank1 at asme.org
Mon Jun 15 05:30:33 UTC 2015
On Sun, Jun 14, 2015 at 3:12 PM, Michael T. Dean <mtdean at thirdcontact.com>
wrote:
> 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?
>
> http://pastebin.com/fqKk3ZJ0
Weirdly enough, after this discussion I increased the DisplaySize by 1 mm
in each direction to make it a true 4:3 (560x420) and restarted the X
server, but it doesn't seem to be picking it up. It's still showing
559x419. Not sure why.
Karl
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20150614/3a8539f5/attachment.html>
More information about the mythtv-users
mailing list