[mythtv-users] Upgrade and problems with 32kHz audio

[Norm Dugas]

Ray wrote:
> I recently upgraded to the latest Mythtv version and I'm having 
> problems with some of my older recordings that were recorded with an 
> audio sampling rate of 32000 Hz.  These are Mpeg4 files from a bt878 
> card and probably using btaudio (they were recorded back in 2003 & 
> 2004).  The videos play fast and the audio sounds like chipmunks.  My 
> recent recordings done with a PVR-500 card play just fine.  I tried 
> transcoding one of these problem videos with a profile that specifies 
> 48kHz audio sample rate but mythtranscode just copied the audio.  I've 
> tried setting playback to "use video as time base but that didn't help 
> either.
>
> Is there anything I can do to either get Mythtv to play these shows 
> correctly or to transcode them into something Myth will play?
>
I used to have some 32Khz audio on recordings when I captured analog 
channels over firewire on my cable box.  I know I was able to convert 
the audio on these.  You can do what you want with avidemux.  The 
process I used was something along the following:
- use nuvexport to export the nuv file and sql (was the very last option 
in the menu)
- use avidemux to fix the file
- copy the fixed file to the myth storage directory using the same file 
name as the original

Hope this helps,
Norm