[mythtv-users] Test Capture Settings with test_ioctl
jcw at wilsonet.com
Thu Jul 15 20:12:31 EDT 2004
On Thursday 15 July 2004 14:23, Cory Megitt wrote:
> Hi All;
> I am running FC1 with 2x PVR250's.
> They both detect fine as you can see.
Yep, they are seen on the PCI bus just fine.
> I am stuck in Jerod's instructions as he writes from section:
> 11. Get and install capture card driver. He goes on to write the following
> # /usr/bin/test_ioctl -u 0x3000
> # /usr/bin/test_ioctl -p 4
> # /usr/bin/test_ioctl -f width=720,height=480 # /usr/bin/test_ioctl -v
# /usr/bin/test_ioctl -d /dev/video1 <command>
to tweak the second card.
> # cat /dev/video0 > /tmp/test_capture.mpg (ctrl-c to stop capture)
And obviously, cat /dev/video1 > test_cap.mpg
> This is what happens:
> When playing back the capture.mpg file, the audio is there 100%, but the
> video is skewed. I can't make out any picture of what I am watching.
> It looks like wavy lines.
> Could this mean that the frequency is not setup right?
Sounds like it. If you're using cable, double-check if your provider uses the
us-cable or us-cable-hrc frequency table. Or just try the opposite of
whatever you have set right now. Or maybe you're just on a channel that
doesn't come in clearly. You could also try changing channels...
> I tried this
> with both of the following commands (since I have 2 capture devices)
> # cat /dev/video0 > /tmp/test_capture.mpg # cat /dev/video1 >
> Both instances offer the same output (in terms of wavy lines).
> Any help with this is appreciated -- I'm stuck and can't move on :(
I can't recall how to change your frequency table when you're talking strictly
command-line stuff. Anyone else? Change channels either with some test_ioctl
options or with ptune.
> Here is some other outputs in case they're needed (Sorry for the long post)
Don't need 'em.
> [root at cable share]# /bin/dmesg |grep ivtv
> ivtv: Registered v4l2 device, minor 0
> ivtv: Registered v4l2 device, minor 1
ivtv is definitely finding both cards just fine.
Jarod C. Wilson, RHCE
jcw at wilsonet.com
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