[mythtv-users] front end starts but unable to watch tv

Wed Apr 22 06:24:06 UTC 2009

On Tue, 2009-04-21 at 13:07 -0600, Brian Wood wrote:
> On Tuesday 21 April 2009 09:58:24 Mike McMullin wrote:
> > On Mon, 2009-04-20 at 17:50 -0700, Andreas Schlehahn wrote:
> > > Before trying with MythTV, you might want check if hardware & driver are
> > > working properly.
> > >
> > > Check if driver & firmware are loaded. dmesg | grep ivtv should list at
> > > least something like this:
> > > ivtv0: Registered device video0 for encoder MPG (16384 kB)
> > > [....]
> > > ivtv:  End initialization
> > > ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
> > > [....]
> > >
> > > Tune the card to a known good channel: ivtv-tune -d
> > > /dev/[devicename-for-your- pvr150] -c [channel-number]
> > >
> > > You might have to install ivtv and ivtv-firmware through yast to make the
> > > above steps work.
> > >
> > > Record some video: cat  /dev/[devicename-for-your-pvr150] >
> > > [/path/to/the/videofile.mpg]
> > >
> > > Play the video with something other that MythTV, e.g:
> > > mplayer [/path/to/the/videofile.mpg]
> > >
> > > Once all that is working, MythTV should work too (tm).
> >
> > Mike at P-733-Lin:~> dmesg | grep ivtv
> > ivtv:  Start initialization, version 1.4.0
> > ivtv0: Initializing card #0
> > ivtv0: Autodetected Hauppauge card (cx23416 based)
> > ivtv 0000:01:08.0: PCI INT A -> Link[APC1] -> GSI 16 (level, high) ->
> > IRQ 16
> > ivtv0: Unreasonably low latency timer, setting to 64 (was 32)
> > ivtv0: Autodetected Hauppauge WinTV PVR-150
> > ivtv0: Reopen i2c bus for IR-blaster support
> > cx25840 2-0044: cx25841-23 found @ 0x88 (ivtv i2c driver #0)
> > tuner 2-0061: chip found @ 0xc2 (ivtv i2c driver #0)
> > wm8775 2-001b: chip found @ 0x36 (ivtv i2c driver #0)
> > ivtv0: Registered device video1 for encoder MPG (4096 kB)
> > ivtv0: Registered device video32 for encoder YUV (2048 kB)
> > ivtv0: Registered device vbi0 for encoder VBI (1024 kB)
> > ivtv0: Registered device video24 for encoder PCM (320 kB)
> > ivtv0: Initialized card #0: Hauppauge WinTV PVR-150
> > ivtv:  End initialization
> > ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
> > ivtv0: Encoder revision: 0x02060039
> > Mike at P-733-Lin:~> ivtv
> > bash: ivtv: command not found
> > Mike at P-733-Lin:~> ivtv-tune -d /dev/video1 -c 51
> > /dev/video1: 385.250 MHz  (Signal Detected)
> > Mike at P-733-Lin:~> cat /dev/video1 > channel51.mpg
> > ^C
> > Mike at P-733-Lin:~> mplayer channel51.mpg
> > MPlayer dev-SVN-r27637-4.3-openSUSE Linux 11.1 (i686)-Packman (C)
> > 2000-2008 MPlayer Team
> > CPU: AMD Athlon(tm) XP 2500+ (Family: 6, Model: 10, Stepping: 0)
> > CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
> > Compiled with runtime CPU detection.
> > Can't open joystick device /dev/input/js0: No such file or directory
> > Can't init input joystick
> > mplayer: could not connect to socket
> > mplayer: Connection refused
> > Failed to open LIRC support. You will not be able to use your remote
> > control.
> >
> > Playing channel51.mpg.
> > MPEG-PS file format detected.
> > VIDEO:  MPEG2  720x480  (aspect 2)  29.970 fps  8000.0 kbps (1000.0
> > kbyte/s)
> > ==========================================================================
> > Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
> > VDec: vo config request - 720 x 480 (preferred colorspace: Mpeg PES)
> > Could not find matching colorspace - retrying with -vf scale...
> > Opening video filter: [scale]
> > The selected video_out device is incompatible with this codec.
> > Try appending the scale filter to your filter list,
> > e.g. -vf spp,scale instead of -vf spp.
> > VDecoder init failed :(
> > Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> > Selected video codec: [ffmpeg2] vfm: ffmpeg (FFmpeg MPEG-2)
> > ==========================================================================Mike at P-733-Lin:~> dmesg | grep ivtv
ivtv:  Start initialization, version 1.4.0
ivtv0: Initializing card #0
ivtv0: Autodetected Hauppauge card (cx23416 based)
ivtv 0000:01:08.0: PCI INT A -> Link[APC1] -> GSI 16 (level, high) ->
IRQ 16
ivtv0: Unreasonably low latency timer, setting to 64 (was 32)
ivtv0: Autodetected Hauppauge WinTV PVR-150
ivtv0: Reopen i2c bus for IR-blaster support
cx25840 2-0044: cx25841-23 found @ 0x88 (ivtv i2c driver #0)
tuner 2-0061: chip found @ 0xc2 (ivtv i2c driver #0)
wm8775 2-001b: chip found @ 0x36 (ivtv i2c driver #0)
ivtv0: Registered device video1 for encoder MPG (4096 kB)
ivtv0: Registered device video32 for encoder YUV (2048 kB)
ivtv0: Registered device vbi0 for encoder VBI (1024 kB)
ivtv0: Registered device video24 for encoder PCM (320 kB)
ivtv0: Initialized card #0: Hauppauge WinTV PVR-150
ivtv:  End initialization
ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
ivtv0: Encoder revision: 0x02060039
Mike at P-733-Lin:~> ivtv
bash: ivtv: command not found
Mike at P-733-Lin:~> ivtv-tune -d /dev/video1 -c 51
/dev/video1: 385.250 MHz  (Signal Detected)
Mike at P-733-Lin:~> cat /dev/video1 > channel51.mpg
^C
Mike at P-733-Lin:~> mplayer channel51.mpg
MPlayer dev-SVN-r27637-4.3-openSUSE Linux 11.1 (i686)-Packman (C)
2000-2008 MPlayer Team
CPU: AMD Athlon(tm) XP 2500+ (Family: 6, Model: 10, Stepping: 0)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.
Can't open joystick device /dev/input/js0: No such file or directory
Can't init input joystick
mplayer: could not connect to socket
mplayer: Connection refused
Failed to open LIRC support. You will not be able to use your remote
control.

Playing channel51.mpg.
MPEG-PS file format detected.
VIDEO:  MPEG2  720x480  (aspect 2)  29.970 fps  8000.0 kbps (1000.0
kbyte/s)
==========================================================================
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 480 (preferred colorspace: Mpeg PES)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
VDecoder init failed :(
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffmpeg2] vfm: ffmpeg (FFmpeg MPEG-2)
==========================================================================
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 48000 Hz, 2 ch, s16le, 224.0 kbit/14.58% (ratio: 28000->192000)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or
resource busy
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
VDec: vo config request - 720 x 480 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
VO: [xv] 720x480 => 720x540 Planar YV12
A:   7.7 V:   7.9 A-V: -0.159 ct: -0.201 229/229 15%  5%  0.8% 1 0

Exiting... (End of file)
Mike at P-733-Lin:~>

> > ==========================================================================
> > Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
> > AUDIO: 48000 Hz, 2 ch, s16le, 224.0 kbit/14.58% (ratio: 28000->192000)
> > Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
> > ==========================================================================
> > [AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or
> > resource busy
> > AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
> > Starting playback...
> > VDec: vo config request - 720 x 480 (preferred colorspace: Planar YV12)
> > VDec: using Planar YV12 as output csp (no 0)
> > Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> > VO: [xv] 720x480 => 720x540 Planar YV12
> > A:   7.7 V:   7.9 A-V: -0.159 ct: -0.201 229/229 15%  5%  0.8% 1 0
> >
> > Exiting... (End of file)
> > Mike at P-733-Lin:~>
> >
> >   Still no joy.  Is it possible that I'm having a mysql problem?  On
> > occasion when I log into my account, i need to give the mysql root
> > password for mythbackend to access somehting.

   Seriously some days I ought to slap myself.  It did record and I did
watch the recorded bit in mplayer, everything that was suggested to do
was done and worked according to Adreas' expectations, right up but not
including being able to use mythtv to watch live tv.

> Nothing you tried above has anything to do wth MySQL, so I doubt that's your 
> problem, though I don't understand why you would need a root P/W for mysql to 
> run Myth.

  I don't either, like I said this is sporadic.

> Anyway, It looks like the problem you are having is in playing the video with 
> mplayer. Have you tried playing a known good mpeg2 file with mplayer? 
> 
> Have you tried taking the advice of mplayer itself:
> 
> Opening video filter: [scale]
> The selected video_out device is incompatible with this codec.
> Try appending the scale filter to your filter list,
> e.g. -vf spp,scale instead of -vf spp.
> 
> What is your video setup? What card, what drivers?

  I'm using an nvidia card based card, with a driver that I re-compile
every kernel update.

> Also looks like an audio problem:
> 
> [AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or
> resource busy

  I think I know what this one is, I did a switch user into my own
profile and the other one had a browser and other apps open.  The first
login controls the sound on this system, being the secondary login my
sound settings are changed from what they normally are.  I did not
bother to see if there was any sound coming out as I had my speakers
turned off.

> Is your desktop perhaps tying up your audio output?  Looks like something 
> grabbed it before mplayer could, for example KDE will tie up your audio, and 
> release it only after a delay, which is configurable, I think it defaults to 
> something like 30 seconds, try reducing that to 2 or 3 seconds.
> 
> You need to be sure you can play a file outside of Myth before you try to get 
> Myth working. It looks like you are recording a good file, but your 
> machine/setup can't play it.

  Again it did play, I mis-represented the result and will go back to my
report and fix that misdirection on my part.

> As has been said, you need to check out your video hardware and driver setups, 
> then figure out what's grabbing your audio output, then try Myth.

  Well the video and the drivers work and i just retried the file in
mplayer and there is sound.
> 