[mythtv-users] Video frame buffering failed too many times [0.26-fixes]

Andréas Kühne andreas at kuhne.se
Sat Jan 5 22:44:27 UTC 2013


I checked now again.

I tried to set the max value (as you indicated below), but after setting
the value and then trying to read the value again, it doesn't work. The
default value is reset.

I am also using Mythbuntu (version 12.04, myth 0.26)

// Andréas

2013/1/5 Igor Cicimov <icicimov at gmail.com>

> On Sun, Jan 6, 2013 at 9:20 AM, Andréas Kühne <andreas at kuhne.se> wrote:
>
>> I have tried setting the following as well, however the setting never
>> changes. Also, how would I set it so that the change is permanent after
>> each restart?
>>
>> Regards,
>>
>> Andréas
>>
>>
> Hmmm works for me in Mythbuntu. I have it in startup script after ALSA
> gets initiated and the mythtv user gets auto logged in. I set it to 32768
> though which is the max value for my device (found in
> /proc/asound/card0/pcm0p/sub0/max_prealloc file)
>
>
>> 2013/1/5 Igor Cicimov <icicimov at gmail.com>
>>
>>> On Sun, Jan 6, 2013 at 8:47 AM, Igor Cicimov <icicimov at gmail.com> wrote:
>>>
>>>>
>>>> On 06/01/2013 7:51 AM, "Stephen Robertson" <stephengrobertson at gmail.com>
>>>> wrote:
>>>> >
>>>> > Hi all,
>>>> >
>>>> > I'm getting this error when watching live TV.  I don't think I ever
>>>> > see this watching recorded or in progress recordings.
>>>> >
>>>> > I've searched the archives and found references to this but they seem
>>>> > to be from some time ago so I'm not sure whether this is a known
>>>> > problem or whether it was thought to be fixed.
>>>> >
>>>> > As far as I can tell it seems to happen a few minutes after the
>>>> > program has changed (Not the channel, this happens with no user
>>>> > action).
>>>> >
>>>> > This is on a standalone FE connected via gigabit ethernet
>>>> >
>>>> > Any thoughts/suggestions welcome.
>>>> >
>>>> > Stephen
>>>> >
>>>>
>>>> Is the problem showing on all channels or only SD or only HD? All
>>>> stations or one specific? Looks like sound decoding error causing the video
>>>> playback to back off waiting for the sound.
>>>>
>>>> > Logs at:
>>>> > http://pastebin.com/nCzZAdcy
>>>> > http://pastebin.com/0WbCRLBi
>>>> >
>>>> > MythTV Version : v0.26.0-55-g09ac5b2
>>>> > MythTV Branch : fixes/0.26
>>>> > Network Protocol : 75
>>>> > Library API : 0.26.20120822-1
>>>> > QT Version : 4.8.1
>>>> > Options compiled in:
>>>> >  linux profile use_hidesyms using_alsa using_oss using_pulse
>>>> > using_pulseoutput using_backend using_bindings_perl
>>>> > using_bindings_python using_bindings_php using_crystalhd using_dvb
>>>> > using_firewire using_frontend using_hdhomerun using_ceton using_hdpvr
>>>> > using_iptv using_ivtv using_joystick_menu using_libcec using_libcrypto
>>>> > using_libdns_sd using_libxml2 using_lirc using_mheg using_opengl_video
>>>> > using_qtwebkit using_qtscript using_qtdbus using_v4l2 using_x11
>>>> > using_xrandr using_xv using_bindings_perl using_bindings_python
>>>> > using_bindings_php using_mythtranscode using_opengl using_vaapi
>>>> > using_vdpau using_ffmpeg_threads using_live using_mheg using_libass
>>>> > using_libxml2
>>>> > _______________________________________________
>>>> > mythtv-users mailing list
>>>> > mythtv-users at mythtv.org
>>>> > http://www.mythtv.org/mailman/listinfo/mythtv-users
>>>>
>>> CoreContext audio/audiooutputalsa.cpp:242 (IncPreallocBufferSize) ALSA:
>>> Try to manually increase audio buffer with: echo 128 | sudo tee
>>> /proc/asound/card0/pcm0p/sub0/prealloc
>>> Jan  5 10:38:58 revo01 mythlogserver: mythfrontend[1714]: I CoreContext
>>> mythpainter_ogl.cpp:62 (ClearCache) Clearing OpenGL painter cache.
>>>
>>> Yeah have seen this before the sound buffer is set too low. Do as the
>>> error message say:
>>>
>>> $ echo 4096 | sudo tee /proc/asound/card0/pcm0p/sub0/prealloc
>>>
>>> with 4096 instead 128 to be on the safe side and see if the error goes
>>> away.
>>>
>>>
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>>> mythtv-users at mythtv.org
>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>>
>>>
>>
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>>
>
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>


-- 
vänliga hälsningar,

Andréas

Upplandsgatan 93 . 113 44 . Stockholm
Mobil 076 543 8825
andreas at kuhne.se
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