salstrom at gmail
Nov 24, 2009, 9:29 PM
Post #3 of 4
(362 views)
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On Tue, Nov 24, 2009 at 9:23 PM, David Brodbeck <gull [at] gull> wrote:
> Neil Salstrom wrote:
>>
>> I've got a number of mp4 files that I've made (encoded vhs tapes) and
>> when playing I get no audio. The files work fine in xine-vdpau.
>>
>> I'm running a self compiled 0.22-fixes. (Revision: 22867M)
>>
>> This is what I get in the log:
>>
>> 2009-11-18 19:47:29.361 TV: Attempting to change from None to Watching
>> Video
>> 2009-11-18 19:47:29.436 TV: StartPlayer(0, Watching Video, main) -- begin
>> 2009-11-18 19:47:30.022 AFD: Opened codec 0x7f1fd0c8c9f0, id(MPEG4)
>> type(Video)
>> 2009-11-18 19:47:30.022 AFD: codec AAC has 2 channels
>> 2009-11-18 19:47:30.022 AFD: Opened codec 0x7f1fd0b80e80, id(AAC)
>> type(Audio)
>> 2009-11-18 19:47:30.023 Opening audio device 'spdif'. ch 2(2) sr 96000
>> 2009-11-18 19:47:30.023 Opening ALSA audio device 'spdif'.
>> 2009-11-18 19:47:30.025 AudioOutput Error: Rate doesn't match
>> (requested 96000Hz, got 48000Hz)
>> 2009-11-18 19:47:30.026 AudioOutput Error: Unable to set ALSA parameters
>> 2009-11-18 19:47:30.028 NVP(2): Disabling Audio, reason is: Unable to
>> set ALSA parameters
>>
>> Do I need to re-encode the audio for these to play or is this a issued
>> with something in mythtv? Audio for everything else works fine.
>
> The file has an audio sample rate of 96 kHz, but your audio output device
> can only handle 48 kHz.
>
> I had the same problem with one of my systems. Apparently the fix is to set
> up an asound.conf that tells ALSA to resample the audio on the fly.
> Unfortunately the wiki reorganization broke all the links to how to do that
> in the mailing list archive. I never did figure it out. Since I was using
> analog instead of digital output I switched to using /dev/dsp instead of
> ALSA:default, avoiding all the nasty ALSA stuff.
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> mythtv-users [at] mythtv
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
Thanks for the input. I'll see what I can dig up on creating a
asound.conf. I'm sure someone around has attacked the problem! The
strange thing is how xine-vdpau has no issue playing it with audio. I
tried with mplayer and that also had no audio.
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