[mythtv-users] Myth blowing up my M179 settings
ct-myth at cthompson.com
Fri Mar 5 18:07:57 EST 2004
I have a backend box with a PVR-250 in the first slot, and two Aver M179's
in the next two slots. This is a FC1 box set up to Jarod's howto, using all
the software from ATrpms.
I'm feeding each card via SVideo-0.
I was having trouble getting video in from /dev/video1, which is the first
M179. I rmmod'ed ivtv, did a modprobe, checked dmesg, and all was well.
I did the test_ioctls from Jarod, namely
# /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
though I was doing -p 0 for Svideo-0.
cat /dev/video1 > foo.mpg works like a champ (sort of, see below)
in mythtvsetup I cleared all my capture card settings and added three new
ones on /dev/video0 video1 and video2. All were set to PVR-250/350. All
were set to default input Svideo0.
I try to watch live TV and get nothing. I quit out of frontend and backend
and do another cat /dev/video1 > foo.mpg again and get data errors.
I tried a bunch of different test_ioctl settings, to no avail.
So I rebooted the machine, did an rmmod on ivtv and all the other modules
related to it. Did the cat /dev/video1 trick to verify it worked. I then
saved the output of test_ioctl -a.
You can see this at http://cthompson.com/before.txt
I then did mythbackend/frontend, tried to view liveTV, errored out, and did
test_ioctl -a and saved those values to http://cthompson.com/after.txt
You can see a diff between these two at http://cthompson.com/diff.txt
What's interesting is that myth has rearranged the values under
VIDIOC_ENUMINPUT. Other interesting changes are
- Bus info : 0
+ Bus info : 1
-bitrate : 8000000
+bitrate : 4500000
Am I missing something interesting about M179?
The other ugly thing that's happening is that all video on the first M179
is in black and white. I had this problem for a while on my PVR-250, but it
went away, and I attributed it to a bad SVideo cable.
Now, however, I can move the same cable back and forth between the PVR and
the M179 and the PVR gets color and the Aver doesn't.
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