<div class="gmail_quote">On Nov 8, 2007 10:43 PM, MythTV User <<a href="mailto:mythuser@mydean.com" target="_blank">mythuser@mydean.com</a>> wrote:<br><div class="gmail_quote"><div class="Ih2E3d"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">yeah, this confuses me too, whether its the linux box or
the display...</font></span></div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">on the same note, isnt it when I record, say a 720p program
OTA, and my Xorg is 1080p, Myth upscales it to 1080p? Im assuming that it is the
same case with playing the DVD...</font></span></div></div></blockquote></div><div><br>Unfortunately, the answers to these questions can vary depending on your X server's configuration, the MythTV configuration, and how the display is connected to the video device in the computer. To determine the X server's current resolution, you can look at the output of the xdpyinfo command: "xdpyinfo |grep dimensions:" should give dimensions like 640x480 or 1600x1200 or 1920x1080. When MythTV plays video, it generally gets scaled by the video card to those dimensions. If that's the native resolution of the display, such as an LCD TV or monitor, those should be the exact pixels that you see.
<br><br>However, everything is complicated by MythTV's ability to switch resolutions and the display's internal scaling. I have MythTV leave the video mode alone, so Xorg generally has a resolution of 1280x768 or 1368x768 while playing video through DVI on my 1366x768 native resolution LCD TV. Since I can't match the TV's native resolution exactly (it doesn't seem to have a 1:1 pixel mapping mode even for DVI input), the TV is always scaling the image too. Although this redundant scaling bothered me a lot initially and makes small text look jaggy, I realized that for MythTV playing full screen video, it has little impact on image quality. Obviously, a better design of display would allow the video card to control individual pixels via DVI or HDMI.
<br><br>Jonathan Rogers<br></div></div><br>
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