[mythtv-users] 0.19 and live TV sound not working with MP3 encoder

Michael T. Dean mtdean at thirdcontact.com
Thu Feb 16 04:45:41 UTC 2006


On 02/15/2006 10:39 PM, Philip Gladstone wrote:
> I'm a new mythtv person and I had had problems with sound in 0.18.1 
> for live tv. I upgraded to 0.19 to see if was better. Here is what I 
> found:
>
> If the profile for live tv has MP3 at 32000 hZ, then I get no audio 
> (or just some faint clicks/buzz). If the profile is uncompressed at 
> 32000Hz, then I get audio just fine.
>
> If the profile for recording TV is MP3 at 32000Hz, then I get no audio 
> when playing the file, *but* if I transfer the .nuv file to a windows 
> box, the audio portion plays correctly with mplayer. This would seem 
> to indicate that the issue is on the playback side.
Most likely your ALSA configuration.  Your soundcard probably only does 
48KHz, so you'll need to configure ALSA to use the plug plugin.  See 
http://mythtv.org/wiki/index.php/Configuring_Digital_Sound#Setting_up_ALSA.27s_.asoundrc.2C_Properly 
, even though you're not setting up digital sound.

Also, you may want to use 48KHz audio in the profile.  48KHz audio will 
go straight to DVD without resampling.

Mike


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