[mythtv-users] Mythfrontend Mac OS X Monitor Aspect Ratio

Rob S rob at zerogeek.net
Mon Mar 15 01:48:32 UTC 2010

I'm seeing the same thing and it's annoying the heck out of me since I
upgraded back in october or whenever it was.  I have the exact same setup
and for the life of me I can't get pretty much any video to display at the
correct ratio.  4:3 video is stretched without any borders and HD video that
is broadcast in 16:9 has a really annoying border along the bottom that
makes it waaay stretched.  Going through the stretch options (the W key)
doesn't help much and the only video that looks right is 16:9 video that's
broadcast in 4:3 on direcTV (by using the vertical stretch option).

To me this looks like a legitimate bug - I should be able to select the
aspect ratio of the playback regardless of the resolution of the output
video.  For what it's worth, the video ratio is correct on my linux
backend/frontend connected to a similar TV through VGA.

I suspect that you're seeing the option on your MBP on the cinema display
because the ratio is 16:10 there.


On Tue, Jan 19, 2010 at 12:21 PM, Dave LeBer <dleber at codeferous.com> wrote:

> On Mon, Jan 18, 2010 at 9:21 PM, Dave LeBer <dleber at codeferous.com> wrote:
>> On Mon, Jan 18, 2010 at 9:13 PM, scram69 <scram69 at gmail.com> wrote:
>>> >> Dave,
>>> >> My mini (GMA950 video) detects my 16:9 flat panel as 1360x768 when
>>> >> connected via DVI to HDMI.  I lose 3 pixels in the horizontal on each
>>> >> side.  Do you have that resolution available?  SD content plays back
>>> >> 4:3 with black bars...
>>> >>
>>> >> Steve
>>> >
>>> > Thanks Steve,
>>> > I can force that resolution using SwitchResX but still no difference.
>>> 4:3
>>> > content is still stretched.
>>> > Can I compare my configuration with yours?
>>> > I'm running:
>>> > Mac OS X 10.5.8
>>> > Mythfrontend-release-0-22-fixes-20100117_Rev.23167 (from
>>> thesniderpad.com)
>>> > I've tried Snow Leopard on the Mini (since that is what is running on
>>> the
>>> > MBP) and I was originally running a build of Mythfrontend 0.22-fixes
>>> from
>>> > November.
>>> > ;david
>>> >
>>> >
>>> > _______________________________________________
>>> > mythtv-users mailing list
>>> > mythtv-users at mythtv.org
>>> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>>> >
>>> >
>>> I'm also on 10.5.8, but rev 22957, although I doubt that makes much
>>> difference.  It sounds to me like your TV might be choosing to stretch
>>> the content on its own.  My set has an "auto-stretch" setting that I
>>> turn off.
>> Hey Steve,
>> I thought of that, so I tried connecting the Mac Mini to my Cinema
>> Display, unfortunately I get the same behaviour. I'll probably try hooking
>> my MBP to the tv later this evening, but I'm not really expecting any
>> revelations.
>> If I compensate for the horizontal stretch by forcing a v-stretch zoom,
>> then the recorded content is watchable. As long as nothing important happens
>> in the top or bottom part of the frame that is :-)
>> Very, very, odd... and frustrating.
> And... it looks like the LCD TV is an important part of the equation after
> all. I connected my MBP to the tv and saw the same behaviour (4:3 content
> stretched, no black border). I then re-tested connecting the Mini to my
> cinema display, and although it doesn't show the Display Aspect Ratio in
> Settings it does do the right thing when displaying recorded 4:3 content.
> On my old setup (Myth 0.20) zooming didn't work on the Mini but recorded
> 4:3 content displayed correctly (not stretched, w/black side borders). Now
> after the upgrade to 0.22 it doesn't, so I'm not sure if the TV is auto
> scaling (since it wasn't before) or if it's something else.
> So: cinema display via DVI works, tv via dvi-hdmi doesn't.
> ;david
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