[mythtv] [PATCH] Big audio update redux

[J. Donavan Stanley]

Ed Wildgoose wrote:

>
>> I know nothing about DVB, but we already support multiple audio 
>> tracks in things like MPEG2 streams.
>
>
>
> Cool.  Sounds very useful.  I think I saw a note on an HDTV thread 
> about cycling between these.  Could you perhaps remind me of the 
> details please?


It a nutshell, the AVFormatDecoder scans for audio tracks within the 
stream when the file is opened.  It keeps a list of them and attempts to 
select the most applicable one to use based on the number of channels.  
Support is there for switching which stream actually gets output.  Which 
is why I asked the ivtv folks about getting the SAP channel encoded as 
another audio track, since then it'd be easy to play it back.