[mythtv-commits] Ticket #8509: Fast chopping / stuttering in mythmusic after hdaudio merge
MythTV
mythtv at cvs.mythtv.org
Sun May 30 05:19:34 UTC 2010
#8509: Fast chopping / stuttering in mythmusic after hdaudio merge
-----------------------------------+----------------------------------------
Reporter: bhuffman@… | Owner: jyavenard
Type: defect | Status: new
Priority: minor | Milestone: unknown
Component: MythTV - Audio Output | Version: Unspecified
Severity: medium | Mlocked: 0
-----------------------------------+----------------------------------------
Comment(by Ken Emerson <kenneth.emerson@…>):
On Sunday, May 30, 2010, Kenneth Emerson <kenneth.emerson at gmail.com>
wrote:
> I have experienced the same results with MythMusic (described in ticket
8509) since upgrading to trunk with the hdaudio merge. Prior to the merge
I was using ALSA:plughw,1,0 as my main audio device and "default" in
MythMusic setup for the audio device.
>
> After upgrading to 24896, I switched the main audio device from
ALSA:plughw,1,0 to ALSA:iec958:CARD=External,DEV=0. If I leave the music
audio device at default, I get the choppy,stuttering output described in
ticket 8509. When I change the music device to /dev/dsp1 the music plays
normally.
>
> If I leave the music device at default and check the PCM Analog box in
the general MythTV audio configuration screen, the frontend segfaults (I
have a coredump).
>
Then why not provide a backtrace in the ticket?
The 8509 ticket is unfortunately close to useless.
It does not provide any information that could actually help diagnose
the problem.
/dev/dsp is OSS audio
The PCM checkbox is only necessary when using multichannel audio.
What happens if you leave the audio config like it was before?
(ALSA:plughw,1,0)
- Show quoted text -
> The output from the frontend is:
>
> 2010-05-29 14:14:44.166 AO: Opening audio device
'iec958:CARD=External,DEV=0' ch
> 2(2) sr 44100 sf signed 16 bit reenc 0
> 2010-05-29 14:14:44.167 Opening ALSA audio device
'iec958:CARD=External,DEV=0'.
> 2010-05-29 14:14:44.895 ScreenSaverX11Private: DPMS Deactivated 1
> 2010-05-29 14:15:01.212 ScreenSaverX11Private: DPMS Reactivated 1
> 2010-05-29 14:15:03.522 Loading menu theme from
/usr/local/share/mythtv/music_se
> ttings.xml
>
> Music stutters.
>
>
> 2010-05-29 14:15:48.166 XMLParse: LoadTheme using
'/usr/local/share/mythtv/theme
> s/blue-abstract-wide_old/music-ui.xml'
> 2010-05-29 14:15:48.514 XMLParse, Warning: Unknown: area in repeated
image
> 2010-05-29 14:15:48.515 XMLParse, Warning: Unknown: area in repeated
image
> 2010-05-29 14:15:49.029 AO: Opening audio device '/dev/dsp1' ch 2(2) sr
44100 sf
> signed 16 bit reenc 0
>
> Music plays fine.
>
> version info:
> ken at mythtv:~$ mythfrontend --version
> Please attach all output as a file in bug reports.
> MythTV Version : 24896
> MythTV Branch : trunk
> Network Protocol : 57
> Library API : 0.23.20100526-2
> QT Version : 4.5.0
> Options compiled in:
> linux debug using_oss using_alsa using_backend using_directfb using_dvb
using_f
> irewire using_frontend using_hdhomerun using_hdpvr using_iptv using_ivtv
using_j
> oystick_menu using_libfftw3 using_lirc using_mheg using_opengl_video
using_openg
> l_vsync using_qtdbus using_qtwebkit using_v4l using_x11 using_xrandr
using_xv us
> ing_xvmc using_xvmc_vld using_xvmcw using_bindings_perl
using_bindings_python us
> ing_opengl using_vdpau using_ffmpeg_threads using_live using_mheg
>
>
Ok. I started on the users list as I didn't want to muddy the waters with
what might have been a configuration problem.
/dev/dsp is OSS audio
I realize that. I just wanted to state that this was the only option that
produced good audio.
The PCM checkbox is only necessary when using multichannel audio.
I was pretty sure that this was only used when using the individual
channel outputs from the sound card (not S/PDIF); however, my nature is to
try all possible combinations before giving up in the hope that some
information will be useful. what I did get was a segfault from
mythfrontend (backtrace attached).
What happens if you leave the audio config like it was before?
(ALSA:plughw,1,0)
This was the first option I tried. Recordings and videos sounded fine. I
got nothing when I tried playing mp3's through MythMusic; total silence.
When I switched to the S/PDIF device for MythMusic, it sounded like it was
coming from under water (stuttering/choppy).
This configuration is easy for me to set up, so if there is someway I can
provide you with more detailed information, I am at your service.
-- Ken E.
--
Ticket URL: <http://svn.mythtv.org/trac/ticket/8509#comment:1>
MythTV <http://www.mythtv.org/>
MythTV
More information about the mythtv-commits
mailing list