[mythtv-users] Mythbuntu running 7.10/ 0.21: Cannop open /dev/video0
memmott at gmail.com
Tue Apr 15 12:22:45 UTC 2008
On Mon, Apr 14, 2008 at 9:22 PM, Matt Emmott <memmott at gmail.com> wrote:
> On Sun, Apr 13, 2008 at 11:29 PM, Brad DerManouelian <
> myth at dermanouelian.com> wrote:
> > Are you getting your guide data from SchedulesDirect? You mentioned that
> > you scanned your channels but if you're getting guide data from SD then you
> > should be fetching analog channels, not scanning them. Getting a black
> > screen is likely a tuning error, but you'd get more information from the log
> > that mythbackend generates.
> > As far as your TVTime error, I'm guessing it actually is a permissions
> > error. You probably had mythbackend running (as a service) when you tried to
> > use TVTime to capture video. Only 1 application at a time can access an ivtv
> > video device.
> > -Brad
> Ok, upon further review it turns out that I had selected the wrong type of
> capture card - I had selected analog card and not PVR-x50. I changed it to
> that and made sure Tuner 1 was the default tuner, and am almost working. I
> say almost because even though I can now tune TV and get audio, my video is
> one big green square. I'm outputting at the default 720x480 with nothing
> whacky configured, so I'm not sure where the issue lies.I am outputting to
> my TV via a VGA cable, but the TV has no problem playing SD tv through
> either Tivo, STB or straight in cable. Not sure what's causing this latest
> issue. Any ideas?
More info: I can view recordings (including LiveTV) in Mythweb's ASX stream
on my Windows box and by viewing the MPG files in Mplayer on the Myth box,
so it would appear that it's something to do with my playback settings. I
tried changing them to slim, standard, etc with no change in the output.
Here's the relevant lines from mythfrontend.log:
2008-04-14 22:20:58.044 TV: Attempting to change from None to WatchingLiveTV
2008-04-14 22:20:58.045 Using protocol version 40
2008-04-14 22:21:00.223 New DB connection, total: 3
2008-04-14 22:21:00.223 Connected to database 'mythconverg' at host:
2008-04-14 22:21:01.155 AFD: Opened codec 0x82d1f30, id(MPEG2VIDEO)
2008-04-14 22:21:01.155 AFD: codec MP2 has 2 channels
2008-04-14 22:21:01.155 AFD: Opened codec 0x846da10, id(MP2) type(Audio)
2008-04-14 22:21:01.274 Opening audio device 'default'. ch 2(2) sr 48000
2008-04-14 22:21:01.274 Opening ALSA audio device 'default'.
2008-04-14 22:21:01.309 Mixer unable to find control Master
2008-04-14 22:21:01.310 Mixer unable to find control Master
2008-04-14 22:21:01.346 VideoOutputXv: XVideo Adaptor Name: 'NV17 Video
2008-04-14 22:21:01.376 OSD Theme Dimensions W: 640 H: 480
2008-04-14 22:21:01.653 TV: Changing from None to WatchingLiveTV
2008-04-14 22:21:01.655 New DB connection, total: 4
2008-04-14 22:21:01.657 Realtime priority would require SUID as root.
2008-04-14 22:21:01.665 Connected to database 'mythconverg' at host:
greedyhdeint: size changed from 0 x 0 -> 480 x 480
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