I'm running the same system (Xorg 6.8.2 on a Gentoo box) and it's working for me; Assuming you uncommented the "Option XVideo On" line in your Xorg.conf file, the obvious differences between your Xorg.conf file and mine are that I have the following modules loaded:

Section "Module"
       Load  "extmod"
       Load  "dri"
       Load  "v4l"
       Load  "dbe"
       Load  "record"
       Load  "xtrap"
       Load  "glx"
       Load  "type1"
       Load  "freetype"
EndSection

What are your USE flags in /etc/make.conf? Here are mine:

USE="directfb ffmpeg xvmc xv divx4linux v4l v4l2 -gnome kde alsa dvd dvdread X gtk gtk2 mysql mythtv apache2 usb lirc"

Note "xv" and "xvmc"

Also, what version of ivtvdev are you running? It should list it in the /var/log/Xorg.log file.

Daniel

Martyn Honeyford wrote:

Ah, didn't think that made much sense (and haven't had a chance to check
out the source yet).

mythtv ~ # xdpyinfo
name of display:    :0.0
version number:    11.0
vendor string:    Gentoo (The X.Org Foundation 6.8.2, revision r1-0.1.2)
vendor release number:    60802000
X.Org version: 6.8.2
maximum request size:  262140 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    7
supported pixmap formats:
   depth 1, bits_per_pixel 1, scanline_pad 32
   depth 4, bits_per_pixel 8, scanline_pad 32
   depth 8, bits_per_pixel 8, scanline_pad 32
   depth 15, bits_per_pixel 16, scanline_pad 32
   depth 16, bits_per_pixel 16, scanline_pad 32
   depth 24, bits_per_pixel 32, scanline_pad 32
   depth 32, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 255
focus:  window 0x40000a, revert to None
number of extensions:    12
   DAMAGE
   LBX
   MIT-SHM
   RANDR
   RENDER
   SECURITY
   XC-APPGROUP
   XFIXES
   XFree86-Bigfont
   XInputExtension
   XKEYBOARD
   XTEST
default screen number:    0
number of screens:    1

screen #0:
 print screen:    no
 dimensions:    720x576 pixels (244x195 millimeters)
 resolution:    75x75 dots per inch
 depths (7):    24, 1, 4, 8, 15, 16, 32
 root window id:    0x35
 depth of root window:    24 planes
 number of colormaps:    minimum 1, maximum 1
 default colormap:    0x20
 default number of colormap cells:    256
 preallocated pixels:    black 0, white 16777215
 options:    backing-store NO, save-unders NO
 largest cursor:    720x576
 current input event mask:    0x404030
   EnterWindowMask          LeaveWindowMask          KeymapStateMask
   PropertyChangeMask
 number of visuals:    1
 default visual id:  0x21
 visual:
   visual id:    0x21
   class:    TrueColor
   depth:    24 planes
   available colormap entries:    256 per subfield
   red, green, blue masks:    0xff0000, 0xff00, 0xff
   significant bits in color specification:    8 bits

mythtv ~ # xvinfo
Xlib:  extension "XVideo" missing on display ":0.0".
xvinfo: No X-Video Extension on :0

Also, i just noticed this in my dmesg output
"ivtv: Tried to open YUV output device but need to send data to mpeg
decoder before it can be used"

I tried stopping the XServer, copying an mpg to /dev/video16 using dd and
then restarting X, but no change.

Thanks,

Martyn.



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