[mythtv-users] Extracting QAM streams outside of Myth

[Preston Crow]

On Tue, 2006-06-13 at 14:17 -0600, Brian Wood wrote:
> On Jun 13, 2006, at 2:13 PM, Preston Crow wrote:
> 
> > I've got Myth recording from QAM, but in going through and looking for
> > channels, I see dvbtraffic reporting a number of different streams,  
> > and
> > I would like to be able to save a bit of each stream and try to figure
> > out what it is.  (Might some of the low-bandwidth streams have useful
> > data?)
> >
> 
> You can tune the card with azap or the like and then just save the  
> output of the device to a file, or just watch it directly with  
> mplayer or your favorite substitute.

Yes, I tune with azap, and then the device file puts out the entire
channel, not just one of the many streams.  I want to find out how to
extract one of those streams.  Obviously mplayer has some way of doing
this internally, but unless it can act as a pass-through without looking
at the data, that doesn't help me for streams that it might not
recognize.