[mythtv-users] Playback Scaling Problem with upgrade

[Jonatan Lindblad]

On 2014-10-29 02:59, Jay Foster wrote:
> I checked my current mythtv system (0.21-fixes) and it does not even
> have the Zoom setting in the setup UI, so this would explain why when I
> upgrade that DB to 0.27, the Zoom field is blank.  Apparently, the
> mythbuntu folks are aware of this because my fresh install of mythbuntu
> 14.04.1 had the default Zoom setting set to V.Fill, which worked
> correctly for me.
>
> My recordings are HDHR ATSC broadcasts (1280x720p, 1920x1080i).  Nothing
> special there.  They scale correctly on my 0.21 system, but require the
> V.Fill zoom option on 0.27.  I'm OK with that, if that is what is
> needed.  I suspect that somewhere between 0.21 and 0.27, the code
> changed to assume that the display pixels are square, which is not the
> case for me.  It appears that without the V.Fill setting in 0.27, the
> playback is converting 1280x720p programs to 1280x720 pixels and
> 1920x1080i programs to 1280x720 pixels for display.  However, my display
> is 1280x768, which results in a distorted (vertically squished) picture
> with black bands on the top and bottom.
>
> xrandr output:
> Screen 0: minimum 8 x 8, current 1280 x 768, maximum 16384 x 16384
> VGA-0 connected primary 1280x768+0+0 (normal left inverted right x axis
> y axis) 0mm x 0mm
>     1024x768       60.0 +   75.0     70.1
>     1280x768       59.9*
>     800x600        75.0     72.2     60.3     56.2
>     640x480        75.0     72.8     59.9
> DVI-D-0 disconnected (normal left inverted right x axis y axis)
> HDMI-0 disconnected (normal left inverted right x axis y axis)

Noticed the "0mm x 0mm"?  It looks like your physical screen size isn't detected/configured.

https://www.mythtv.org/wiki/Display_Size

Cheers,
Jonatan