mindfuq at fairfieldi
Mar 19, 2005, 8:23 AM
Post #1 of 2
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Xawtv works, but live TV in MythTV does not (cause: audio issues?)
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* Joseph Caputo <jcaputo1[at]comcast.net> [2005-03-17 22:31]:
>
> If you've got more than one channel configured, have you specified
> an external channel-changing script? Otherwise maybe Myth is trying
> to change channels via v4l on a card that doesn't have a tuner.
I wasn't even aware that this tool supported external scripts. I'm
not that level of Myth user yet, so I don't think I have one. I'm not
sure that this is the problem either, because I've tried removing all
channels, and Live TV runs for a few seconds, then exits back to the
menu.
Then I added just a channel 3, because the documentation says this
must exist even if it's not used. Still I get the same results. It's
a very touchy configuration. I'm not sure why I was able to watch
live TV work for that one ~5 second splice, and why it doesn't work
now. Xawtv works every time.
Do the frontend 'Player Settings' apply to live TV? The default
player is set to "mplayer -fs -zoom -quiet -vo xv %s". Here is a
piece of mythbackend.log:
2005-03-19 18:59:24.967 MainServer::HandleAnnounce Playback
2005-03-19 18:59:24.972 adding: mythtv as a client (events: 0)
2005-03-19 18:59:25.004 MainServer::HandleAnnounce Playback
2005-03-19 18:59:25.017 MainServer::HandleAnnounce Playback
2005-03-19 18:59:25.023 adding: mythtv as a client (events: 0)
2005-03-19 18:59:25.020 adding: mythtv as a client (events: 1)
2005-03-19 18:59:25.048 MainServer::HandleAnnounce Playback
2005-03-19 18:59:25.054 adding: mythtv as a client (events: 0)
2005-03-19 18:59:25.063 adding: mythtv as a remote ringbuffer
open: No such device
2005-03-19 18:59:25.141 Could not open audio device: /dev/dsp
2005-03-19 18:59:25.154 Changing from None to WatchingLiveTV
2005-03-19 18:59:25.201 Unknown video codec
2005-03-19 18:59:25.206 Please go into the TV Settings, Recording Profiles and
2005-03-19 18:59:25.208 setup the four 'Software Encoders' profiles.
2005-03-19 18:59:25.210 Assuming RTjpeg for now.
2005-03-19 18:59:25.212 NVR: Error, unknown audio codec
2005-03-19 18:59:25.283 NVR: Error, cannot open DSP '/dev/dsp'
open: No such device
2005-03-19 18:59:25.288 NVR: Could not detect audio blocksize
2005-03-19 18:59:25.464 NVR: Cannot open DSP '/dev/dsp', exiting
open: No such device
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
VIDIOCSYNC: Input/output error
2005-03-19 18:59:30.428 NVR: Multiple bttv errors, further messages supressed
2005-03-19 18:59:40.475 Couldn't read data from the capture card in 15 seconds. Stopping.
2005-03-19 18:59:40.506 Changing from WatchingLiveTV to None
2005-03-19 19:00:58.280 Reloading backend settings
It appears as if MythTV only tolerates my disfunctional audio
sometimes, and other times it refuses to do video in the absense of
audio, without even asking me whether I want to opt out of audio. I
may be forced to get the audio working right now.
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