[mythtv-users] Test Capture Settings with test_ioctl

[Jarod Wilson]

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
> commands:
>
> # /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
> input=3,output=1

Use:
# /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 >
> /tmp/test_capture.mpg
>
> 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
[snip]
> ivtv: Registered v4l2 device, minor 0
[snip]
> ivtv: Registered v4l2 device, minor 1
[big snip]

ivtv is definitely finding both cards just fine.


-- 
Jarod C. Wilson, RHCE
jcw at wilsonet.com

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