[mythtv-users] Watching recordings. Pause then drop back to selection screen

[Nick]

On 27/09/05, Paul Barker <myth at sixtimesnine.net> wrote:
> Hi
>
> I have a strange issue which is apparent on both of my frontends. Whilst
> watching a recorded program the image will freeze and eventually drop
> back to the selection screen.
>
> Here is a log snippet from one frontend :
>
> 2005-09-27 11:55:07.032 write->18 50      QUERY_FILETRANSFER 20[]:[]REQUEST_BLO...
> 2005-09-27 11:55:07.050 Read(): reqd=128000, rcvd=128000, rept=128000, error=0
> 2005-09-27 11:55:07.233 write->18 50      QUERY_FILETRANSFER 20[]:[]REQUEST_BLO...
> 2005-09-27 11:55:07.277 Read(): reqd=128000, rcvd=128000, rept=128000, error=0
> 2005-09-27 11:55:07.515 write->18 50      QUERY_FILETRANSFER 20[]:[]REQUEST_BLO...
> 'video_output' mean = '39962.37', std. dev. = '13443.45', fps = '25.02'
> 2005-09-27 11:55:11.786 prebuffering pause
> 2005-09-27 11:55:11.786 waiting for prebuffer...
> 2005-09-27 11:55:11.869 WriteAudio: buffer underrun
> 2005-09-27 11:55:11.947 prebuffer wait timed out..
> 2005-09-27 11:55:11.948 waiting for prebuffer...
>
>
> One of my frontends is in another room and I had been wondering if I had a cabling issue, but the above comes from a frontend plugged into the same switch as the backend.
>
> At the point of failure the backend log doesn't show any errors (logging verbose for playback,file,network) and if I restart the playback it will happily run past the point of failure but then may ( or may not) fail again later.
>
> I've tested all my patch leads with a cable tester and 'sar -n ALL' on the backend shows no collisions or tx or rx errors.
>
> The b/e is FC3 kernel 2.6.12-1.1372_FC3, one f/e is the same and the other is minimyth.
>
> Any ideas where to start ? Or do I just need to start with ethereal and capture a session

I assume you're using a 100Mbit/s network - what is the source of the
recordings (DVB/hardware capture etc)? If they are MPEG-2 can you play
them in a different media player over the network or does this
behaviour only happen in MythTV? How fast can you pull one of the
files from the backend from the command line?

Aside from the physical hardware/network setup side of things, I'd
also make sure you are using a recent stable version of your
DVB/capture drivers and audio drivers (I'd prefer ALSA but many use
OSS without problems).

Nick