[mythtvnz] Long delay when starting playback

[Austin Green]

On Wed, 21 Jun 2017 10:09:42 +1200
Nick Rout <nick.rout at gmail.com> wrote:

> On Tue, Jun 20, 2017 at 10:12 PM, Austin Green <austin.green at orcon.net.nz>
> wrote:
> 
> > On Tue, 20 Jun 2017 17:47:16 +1200
> > Nick Rout <nick.rout at gmail.com> wrote:
> >
> > > On Tue, Jun 20, 2017 at 5:07 PM, Austin Green <austin.green at orcon.net.nz
> > >
> > > wrote:
> > >
> > > > On Tue, 13 Jun 2017 17:18:25 +1200
> > > > "Criggie" <criggie at criggie.org.nz> wrote:
> > > > > Austin Green wrote:
> > > > > > When I hit Play on a selected recording, there is a long delay,
> > > > > > usually 10 to 20 seconds, before it actually starts to play.
> > > > >
> > > > > I'd guess its waiting for something like audio.
> > > > > --
> > > > > Criggie
> > > >
> > > > I think you may be on to it there, Criggie.  See frontend log extract:
> > > >
> > > > 16:55:55 : I CoreContext tv_play.cpp:2201 (HandleStateChange) TV:
> > > > Attempting to change from None to WatchingPreRecorded
> > > > 16:55:55 : E CoreContext audio/audiooutputalsa.cpp:172 (GetPCMInfo)
> > ALSA:
> > > > snd_pcm_info_get_card: Operation not permitted
> > > > 16:55:55 : N CoreContext audioplayer.cpp:164 (ReinitAudio) AudioPlayer:
> > > > Enabling Audio
> > > > 16:55:55 : I CoreContext avformatdecoder.cpp:1898 (ScanStreams) AFD:
> > codec
> > > > MP2 has 2 channels
> > > > 16:55:55 : I CoreContext avformatdecoder.cpp:2378 (OpenAVCodec) AFD:
> > > > Opened codec 0x38723a0, id(MP2) type(Audio)
> > > > 16:55:55 : I CoreContext avformatdecoder.cpp:2378 (OpenAVCodec) AFD:
> > > > Opened codec 0xc935900, id(MPEG2VIDEO) type(Video)
> > > > 16:55:55 : I CoreContext audio/audiooutputbase.cpp:792 (Reconfigure)
> > > > AOBase: Opening audio device 'default' ch 2(2) sr 48000 sf 32 bit
> > floating
> > > > point reenc 0
> > > > 16:56:20 : I CoreContext signalhandling.cpp:194 (SetHandlerPrivate)
> > Setup
> > > > Interrupt handler
> > > >
> > > > There is a 25-second gap in the log after the attempt to open the audio
> > > > device; the process just seems to be hanging there.
> > > >
> > > > Any ideas on cause, or suggestions to fix?
> > > >
> > > > Cheers,
> > > > Austin.
> > > >
> > >
> > > Do you have pulseaudio installed?
> >
> > Yes; how would that cause a problem?
> >
> 
> It may interfere with alsa, which is where you seem to be trying to ouput
> your audio.
> 
> It is a long time since I used mythfrontend, is there an option to output
> audio to pulseaudio?

Yes, the output device was set to 'PulseAudio:default'.
I changed it to 'alsa:pulse' and set up the alsa default device to be 'pulse',
and now the delay seems to have gone away.

Many thanks to all who suggested where to look.

Cheers,
Austin.