[mythtv-users] resolution confusion
Vince LaMonica
vjl at vjl.org
Sun Mar 28 09:10:01 EST 2004
Hi all,
I've got a MythTV box setup and running fairly well using one Hauppauge
PVR 350 on a Mandrake 9.2 box. I plan on redoing the setup soon via a
normal compile [i used a Mandrake 0.14 RPM install], as I need to compile
in support for the Hauppauge remote and figure out why I'm only getting
mono sound.
But before I do that, I would like to better understand how Myth/X/PVR-350
resolution works. I currently have both X and mythfrontend outputting to
my A/V receiver [which goes to the TV]. And while watching a recording or
live TV works nicely, the mythfrontend and X both offer a 'cropped'
version of what should be displayed.
I am pretty sure I know why - my TV is outputting 640x480, but I've got X
setup to display 720x480 as per Jarod's XF86Config [i've modified it to
better suit my system].
In a similar manner, my recording profiles for TV, default, low quality,
and high quality all are set at 480x480. However, when playing the
resulting mpeg2 [.nuv] file on a networked OS X Mac, the movie shows up as
640x480.
So, a few questions:
1) If I change the default recording profile to 720px width by 480px
height, I'll increase the disc space used, but i should still be able to
view the recordings on the Myth box, right? [i want to record in 720x480
so i can easily burn DVDs of myth-recorded tv on my Mac]. I want to be
able to [obivously] view the recordings even if I do step 2 below:
2) If I change my XF86Config-4 [quoted below] to 640x480 instead of
Jarod's 720x480, will both X, mythfrontend, and Myth's TV/recording output
all be shown at 'full screen'?
Also, FWIW, after I get all of this setup [and the remote and stereo
audio], I am planning on making a HOWTO like Jarod's, but geared towards
Mandrake users [so far, in order to get up and running, I had to use info
from a lot of different sources, since RH's Fedora does things slightly
different than Mandrake].
Here's a copy of my XF86Config-4:
------------8<--------------8<-----------------
Section "Files"
# Multiple FontPath entries are allowed (they are concatenated
# together)
# By default, Mandrake 6.0 and later now use a font server independent
# of the X server to render fonts.
FontPath "unix/:-1"
EndSection
Section "ServerFlags"
#DontZap # disable <Crtl><Alt><BS> (server abort)
#DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching)
AllowMouseOpenFail # allows the server to start up even if the mouse
# doesn't work
EndSection
Section "Module"
Load "dbe" # Double-Buffering Extension
Load "extmod"
Load "fbdevhw"
Load "type1"
Load "freetype"
Load "glx" # 3D layer
Load "dri" # direct rendering
EndSection
Section "InputDevice"
Identifier "Keyboard1"
Driver "Keyboard"
Option "XkbModel" "pc105"
Option "XkbLayout" "en_US"
Option "XkbOptions" ""
EndSection
Section "InputDevice"
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/usbmouse"
Option "ZAxisMapping" "4 5"
EndSection
Section "Monitor"
Identifier "NTSC Monitor"
HorizSync 30-68
VertRefresh 50-120
Mode "720x480" # change this to 640x480??
# D: 34.563 MHz, H: 37.244 kHz, V: 73.897 Hz
DotClock 34.564
HTimings 720 752 840 928
VTimings 480 484 488 504
Flags "-HSync" "-VSync"
EndMode
# looks like i need to add a 640 to the HTimings?
EndSection
Section "Device"
Identifier "Hauppauge PVR 350 iTVC15 Framebuffer"
Driver "fbdev"
### change fb0 to whatever your card grabbed
Option "fbdev" "/dev/fb1"
### change the BusID to whatever is reported by lspci,
### specify it ashex.
BusID "0:0x11:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Hauppauge PVR 350 iTVC15 Framebuffer"
Monitor "NTSC Monitor"
DefaultDepth 24
DefaultFbbpp 32
Subsection "Display"
Depth 24
FbBpp 32
Modes "720x480"
# should i change Modes to "640x480"?
EndSubsection
EndSection
Section "ServerLayout"
Identifier "layout1"
Screen "screen0"
Option "Xinerama"
InputDevice "Keyboard1" "CoreKeyboard"
InputDevice "Mouse1" "CorePointer"
EndSection
Section "DRI"
Mode 0666
EndSection
------------8<--------------8<-----------------
Thanks for any tips you might have [esp. in regards to altering my
XF86Config-4 to use 640x480].
/vjl/
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