[mythtv-users] Skewed text and video display on widescreen 5120x1440

Mark Kendall mark.kendall at gmail.com
Sun Jan 10 17:33:42 UTC 2021

On Sun, 10 Jan 2021 at 15:22, Alain <mythuser at alain.homeunix.org> wrote:
> Hi,
>      I do not have the choice of "Auto (Assume...)", I only have the
> "Auto" choice or more specific ones. But whichever I choose, the
> results seems to be the same visually.

Sorry - my mistake. I thought that code had gone into 0.31/fixes but
my recollection was wrong.

Essentially there looks to be a problem with your display's EDID. Both
Qt and MythTV get your display size wrong and calculate an aspect
ratio of 1 (and there is another issue flagged that is EDID related).

As James said, does it not just work if you set the aspect ratio to
32:9? which I assume is your display's aspect ratio?

> However, I do expect this ratio
> to be related to the mythfrontend window size rather than the display
> size, which is not what other comments seemed to imply.

The code that calculates where to place your video on the screen needs
both the screen aspect ratio and the pixel aspect ratio. Most modern
displays have a pixel aspect ratio of 1 - i.e. square pixels. For
older displays, this can only be calculated from the screen dimensions
and the resolution.

In master/0.32, the new default is to assume a pixel aspect ratio of
1:1, which would in your case just work out at 32:9.

If setting the aspect ratio explicitly to 32:9  does not work, then
please post another log with that setting in use - as that would
suggest a bug.


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