[mythtv-users] LiveTV capturing speed is too fast

Michael T. Dean mtdean at thirdcontact.com
Mon Nov 19 20:54:52 UTC 2007

On 11/19/2007 03:48 PM, Jason Barnett wrote:
> I'm running MythTV v0.20.2 on Fedora 7 (64-bit), with a Kworld analog 
> capture card (uses the saa7134 chipset).  I've gotten the audio and 
> video to work, with my mixer settings adjusted in one of two ways.  
> The first configuration provided real-time audio with the delayed 
> video, which caused one to be out of sync with the other.  The second 
> configuration caused the video and audio to play in sync, but at a 
> fast rate; as though I'm watching and listening while it's fast-forward.
> I read an article 
> (http://www.mythtv.org/wiki/index.php/KWorld_Global_TV_Terminator#Problems) that 
> suggested if the audio and video work fine in mplayer, then mythtv is 
> not configured correctly.  Mplayer does in fact play the audio and 
> video correctly, but I cannot figure out how to configure mythtv 
> differently (in a way that works).
> Does this make sense?  If so, how can I get LiveTV to play at a normal 
> rate with the audio in sync?

Sounds like you're sending 32kHz audio to a sound card that requires 
48kHz audio.

Easy fix: change your capture settings to capture audio at 48kHz.  Real 
fix: configure your sound card appropriately (see 
http://www.mythtv.org/wiki/index.php/Configuring_Digital_Sound --even 
for analog sound).


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