[mythtv-users] aac_latm surround broken in 0.24-fixes

Martin martin.rene.mortensen at gmail.com
Tue Dec 21 09:57:41 UTC 2010


Im keeping up 2 date with 0.24 fixes via the mythbuntu 10.4 repositories,
and yesterday I found that surround was broken ..

Im playing a recorded 720p recording with aac_latm 6ch sound, and no sounds
comes from center speakers - this is quite noticeable as you cant hear the
speech. If I turn up the volumes to unhealthy levels, I can hear a weak
murmur - so either my system is very badly screened or there is some sound,
just with very very low volume.

I checked with an AAC surround test video - and I only get sound from front
speakers.

My sound device is ALSA:hdmi:CARD=NVidia,DEV=0

and its all configured nicely, and im sure it has worked before on
0.24-fixes, because I rejoiced at finally being able to hear surround with
the channels in the right speakers! (some speakers were swapped in 0.23).

Anyone had some experience? or do I have a special configuration that is now
broken ?

Theres nothing in the logs - this is output from -v audio (I paused/unpaused
a few times in the end of the logs) :

2010-12-21 10:47:31.305 Pulse: PulseAudio not running
2010-12-21 10:47:31.312 AO: Sample rate 22050 is supported
2010-12-21 10:47:31.313 AO: Sample rate 44100 is supported
2010-12-21 10:47:31.313 AO: Sample rate 48000 is supported
2010-12-21 10:47:31.313 AO: Sample rate 88200 is supported
2010-12-21 10:47:31.313 AO: Sample rate 96000 is supported
2010-12-21 10:47:31.313 AO: Sample rate 176400 is supported
2010-12-21 10:47:31.313 AO: Sample rate 192000 is supported
2010-12-21 10:47:31.313 AO: 2 channel(s) are supported
2010-12-21 10:47:31.313 AO: 3 channel(s) are supported
2010-12-21 10:47:31.313 AO: 4 channel(s) are supported
2010-12-21 10:47:31.314 AO: 5 channel(s) are supported
2010-12-21 10:47:31.314 AO: 6 channel(s) are supported
2010-12-21 10:47:31.314 AO: 7 channel(s) are supported
2010-12-21 10:47:31.314 AO: 8 channel(s) are supported
2010-12-21 10:47:31.342 AO: Killing AudioOutputDSP
2010-12-21 10:47:31.636 AFD: Audio Track #1 is A/V stream #2 and has 2
channels in the Danish language(6578542).
2010-12-21 10:47:31.644 AFD: Audio Track #2 is A/V stream #3 and has 6
channels in the Danish language(6578542).
2010-12-21 10:47:31.645 AFD: Trying to select audio track (w/lang)
2010-12-21 10:47:31.647 AFD: Selected track 2: Danish AAC_LATM 5.1ch (A/V
Stream #3)
2010-12-21 10:47:31.647 AFD: Initializing audio parms from audio track #2
2010-12-21 10:47:31.647 AFD: Audio format changed
                        from id(NONE)     -1Hz -1ch -1bps     to
id(AAC/LATM)  48000Hz  6ch 16bps
2010-12-21 10:47:31.648 AO: Killing AudioOutputDSP
2010-12-21 10:47:31.705 Pulse: PulseAudio not running
2010-12-21 10:47:31.712 AO: Sample rate 22050 is supported
2010-12-21 10:47:31.713 AO: Sample rate 44100 is supported
2010-12-21 10:47:31.713 AO: Sample rate 48000 is supported
2010-12-21 10:47:31.713 AO: Sample rate 88200 is supported
2010-12-21 10:47:31.713 AO: Sample rate 96000 is supported
2010-12-21 10:47:31.713 AO: Sample rate 176400 is supported
2010-12-21 10:47:31.713 AO: Sample rate 192000 is supported
2010-12-21 10:47:31.713 AO: 2 channel(s) are supported
2010-12-21 10:47:31.713 AO: 3 channel(s) are supported
2010-12-21 10:47:31.714 AO: 4 channel(s) are supported
2010-12-21 10:47:31.714 AO: 5 channel(s) are supported
2010-12-21 10:47:31.714 AO: 6 channel(s) are supported
2010-12-21 10:47:31.714 AO: 7 channel(s) are supported
2010-12-21 10:47:31.714 AO: 8 channel(s) are supported
2010-12-21 10:47:31.741 AO: Killing AudioOutputDSP
2010-12-21 10:47:31.741 AO: Original codec was AAC/LATM, signed 16 bit, 48
kHz, 6 channels
2010-12-21 10:47:31.742 AO: enc(0), passthru(0), canAC3(1), canDTS(1),
canLPCM(1), configured_channels(6), 6 channels supported(1)
2010-12-21 10:47:31.743 ALSA: SetParameters(format=2, channels=6,
rate=48000, buffer_time=200000, period_time=50000)
2010-12-21 10:47:31.743 ALSA: Buffer time = 200000 us
2010-12-21 10:47:31.744 ALSA: Period time = 50000 us
2010-12-21 10:47:31.744 ALSA: Buffer size = 9600 | Period size = 2400
2010-12-21 10:47:31.744 AO: Audio fragment size: 14400
2010-12-21 10:47:31.744 AO: Audio Stretch Factor: 1
2010-12-21 10:47:31.744 AO: Ending Reconfigure()
2010-12-21 10:47:31.745 AudioPlayer: Enabling Audio
2010-12-21 10:47:31.745 AO: Reconfigure(): No change -> exiting
2010-12-21 10:47:31.745 AO: kickoffOutputAudioLoop: pid = 1744
2010-12-21 10:47:31.745 AO: OutputAudioLoop: Play Event
2010-12-21 10:47:34.925 Player(0): Forcing decode extra audio option on
(Video method requires it).
2010-12-21 10:47:34.930 AO: OutputAudioLoop: Play Event
2010-12-21 10:47:34.987 OSD: Scaling factors: 1.4625x1.45
2010-12-21 10:47:35.220 OSD: Scaling factors: 1.4625x1.45
2010-12-21 10:47:35.225 AO: OutputAudioLoop: Play Event
2010-12-21 10:47:35.319 AO: Pause 1
2010-12-21 10:47:35.327 AO: OutputAudioLoop: audio paused
2010-12-21 10:47:35.396 AO: Pause 0
2010-12-21 10:47:35.417 AO: Pause 1
2010-12-21 10:47:35.428 AO: OutputAudioLoop: audio paused
2010-12-21 10:47:35.512 AO: Pause 0
2010-12-21 10:47:35.513 AO: OutputAudioLoop: Play Event
2010-12-21 10:47:35.550 AO: Pause 1
2010-12-21 10:47:35.553 AO: Pause 0
2010-12-21 10:47:35.578 AO: OutputAudioLoop: Play Event
2010-12-21 10:48:48.863 AO: Pause 1
2010-12-21 10:48:48.929 AO: OutputAudioLoop: audio paused
2010-12-21 10:48:48.979 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAAAAAAAAAAAAAAAALLLLLL
2010-12-21 10:48:48.985 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAAAAAAAAAAAAAAAALLLLLL
2010-12-21 10:48:48.988 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAAAAAAAAAAAAAAAALLLLLL
2010-12-21 10:48:48.994 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAAAAAAAAAAAAAAAALLLLLL
2010-12-21 10:48:49.003 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAAAAAAAAAAAAAAAALLLLLL
2010-12-21 10:48:49.121 AO: Pause 0
2010-12-21 10:48:49.131 AO: OutputAudioLoop: Play Event
2010-12-21 10:48:50.072 AO: Pause 1
2010-12-21 10:48:50.129 AO: OutputAudioLoop: audio paused
2010-12-21 10:48:49.131 AO: OutputAudioLoop: Play Event
2010-12-21 10:48:50.072 AO: Pause 1
2010-12-21 10:48:50.129 AO: OutputAudioLoop: audio paused
2010-12-21 10:48:50.167 AO: Pause 0
2010-12-21 10:48:50.179 AO: OutputAudioLoop: Play Event
2010-12-21 10:48:50.984 AO: Pause 1
2010-12-21 10:48:51.029 AO: OutputAudioLoop: audio paused
2010-12-21 10:48:51.077 AO: Pause 0
2010-12-21 10:48:51.088 AO: OutputAudioLoop: Play Event
2010-12-21 10:48:51.833 AO: Pause 1
2010-12-21 10:48:51.879 AO: OutputAudioLoop: audio paused
2010-12-21 10:48:51.925 AO: Pause 0
2010-12-21 10:48:51.929 AO: OutputAudioLoop: Play Event
2010-12-21 10:48:52.865 AO: Pause 1
2010-12-21 10:48:52.929 AO: OutputAudioLoop: audio paused

-- 
"There is no Planet B."
Mvh. / Brgds.
Martin René Mortensen
mailto: martin.rene.mortensen at gmail.com
http://www.morten5en.dk
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