[mythtv-users] mythfrontend crashing on AC3 6 channel playback
Lindsay Mathieson
lindsay.mathieson at optusnet.com.au
Mon Jul 7 23:06:39 UTC 2008
I have the single disc version of "I Am Legend" ripped as a ISO which I
am trying to playback.
Playback is fine if I have mythfrontend set to stereo sound (general setup).
However if I have ALSA:surround51 setup then when I try to play the main
move the screen goes black, the CPU pegs at 80% and after a minute
mythfrontend crashes.
The log shows the following. It ends after a *lot* (13 MB) of frame sync
errors.
I'm not sure why mythtv is trying to dowmix AC3 from 6 to 3 channels as
Surround51 is working (tested with other programs).
My sound chip is a onboard ALC662 using the analogue output, setup as
per here:
http://blackpaw-mythtv.blogspot.com/2008/06/getting-51-surround-sound-to-work.html
2008-07-08 07:20:36.277 DPMS Reactivated.
2008-07-08 07:20:36.277 DPMS Deactivated
2008-07-08 07:20:36.302 NVP: Disabling Audio, params(-1,-1,-1)
2008-07-08 07:20:36.382 NVP: prebuffering pause
2008-07-08 07:20:36.713 AFD: Warning, video codec 0x82e3760
id(MPEG2VIDEO) type (Video) already open.
2008-07-08 07:20:37.007 AFD: codec AC3 has 0 channels
2008-07-08 07:20:37.008 AFD: Opened codec 0xaaf20ef0, id(AC3) type(Audio)
2008-07-08 07:20:37.017 Opening audio device 'surround51'. ch 6(3) sr 48000
2008-07-08 07:20:37.017 Opening ALSA audio device 'surround51'.
2008-07-08 07:20:37.067 Mixer unable to find control Master 1
2008-07-08 07:20:37.067 Mixer unable to find control Master 2
2008-07-08 07:20:37.067 Mixer unable to find control Master 3
2008-07-08 07:20:37.067 Mixer unable to find control Master 4
2008-07-08 07:20:37.068 Mixer unable to find control Master 5
2008-07-08 07:20:37.068 mixer unable to find control Master 1
2008-07-08 07:20:37.073 NVP: Enabling Audio
2008-07-08 07:20:37.077 [mpeg2video @ 0xb739cc28]Warning MVs not available
2008-07-08 07:20:37.086 [ac3 @ 0xb739cc28]Cannot downmix AC3 from 6 to 3
channels.
2008-07-08 07:20:37.086 [ac3 @ 0xb739cc28]frame sync error
2008-07-08 07:20:37.086 [ac3 @ 0xb739cc28]frame sync error
2008-07-08 07:20:37.086 [ac3 @ 0xb739cc28]frame sync error
2008-07-08 07:20:37.087 [ac3 @ 0xb739cc28]frame sync error
2008-07-08 07:20:37.087 [ac3 @ 0xb739cc28]frame sync error
2008-07-08 07:20:37.087 [ac3 @ 0xb739cc28]frame sync error
2008-07-08 07:20:37.087 [ac3 @ 0xb739cc28]frame sync error
2008-07-08 07:20:37.087 [ac3 @ 0xb739cc28]frame sync error
2008-07-08 07:20:37.088 [ac3 @ 0xb739cc28]frame sync error
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