[mythtv] DVB radio issue

[Ed Wildgoose]

DVB radio works sporadically for me.  Symptoms are that I get a few 
seconds of audio, then the sound stutters (which I think is the audio 
buffer underrunning) and the log files show "audio ahead of video by 30 
frames".  Switching back to a tv channel shows that the audio still 
stutters and judders - in fact I need to quit live tv and reenter to get 
the audio working again

I have traced through this and I *think* that it's due to  a permanent 
diverge between the real current video time and what myth thinks is the 
current video time.  I managed to accidently get one iteration where the 
radio and tv were both working, but entering into a tv channel showed 
that the audio was well ahead of the video (ie lipsync out).

I saw some notes about why this happens somewhere recently.  Can someone 
point me to which bit of code might be causing this permanent desync 
please?  I think this is what is causing problems with the radio 
(probably there is a big desync introduced and the system then causes 
the problem by trying to resync in a way which is actually causing a 
worse desync

Cheers

Ed W