[mythtv-users] Pixelation Issues

D daspiras at gmail.com
Tue Mar 6 02:52:59 UTC 2007

I only have a sd tube tv - it should be 4:3.  My first thought was an
overscan issue. but the mythtv gui fills the screen except for a wee
bit at the top and the bottom that I need to tweak the overscan for.
Recording at 4:3 on the other hand, places black bars on the left and
right side of the video when playing back (unless I zoom or fill).
Square on the other hand works and looks fine, filling the same
screensize as mythgui,  but it seems like the wrong thing to be doing.
   Maybe I should try recording at 4:3 and playing it on my desktop to
see if the black bars are indeed encoded in the video as I think they

I mean, technically it looks as good as the regular live straight
cable to tv for everything except sporting events, but it doesn't seem
to be the right thing to be doing.

On 3/5/07, Brian Wood <beww at beww.org> wrote:
> On Mar 5, 2007, at 7:32 PM, D wrote:
> > Thanks for all the feedback guys. Upping the encode rates has seemed
> > to help.  A related question: resolutions and aspect ratios
> >
> > Currently I record and play at 720x480 but I have to set the aspect
> > ratio to square in order to have it fill the screen. If I set it to
> > 4:3 there are black bars on each side (and possibly the top, its hard
> > to tell).  This happens even if I record/play in 640x480 as well.  If
> > I don't have it set to square, 4:3 zoom/fill using the W key during
> > playback works, although it looks worse than set to square.  I don't
> > seem to be losing any of the video when I compare it to what the
> > direct cable to the tv shows, but I am a little confused as to why 4:3
> > doesn't work properly?
> If your source material is 4:3 and you want it to "fill" a 16:9
> screen then you have to either distort the image in one of several
> ways or put up with the "reverse letter box" effect.
> Or is that not what you meant?
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