[mythtv] DVBCam Class

[Ed Wildgoose]

>There also may be some people on the list that can clarify what the true difference betwen a PS
>and a TS is and keep me from reading the MPEG specs.  If not i'll figure it out because it didnt
>look to difficult from a quick skim of the MPEG specs.
>  
>

TS is just mpeg broken up into something like 80 byte packets.  Each 
packet starts with a unique code (for sync), and you basically just read 
each set of 80 bytes and reassemble (I forget now if it's 80 bytes or 90 
bytes, but you get the basic idea).  Each packet has a pid and you can 
figure out the stream from that.  You presumably understand the way the 
pid is described in the TS stream already.

So it's quite easy to turn a TS into a PS, and vice versa, the 
difference is really down to it being presumably easier to pack in more 
stuff into a TS, whereas I'm not quite sure how multiple audio is 
handled in the PS..? 

Just to really rock your boat there is also PES which is PS with some 
extra info... I can dig out some docs with the details when I next get a 
chance, but have a browse through the DVB mailing list where I and 
others have asked this question and got good answers.

>It would require writing that data to the RingBuffer, but thats probbably not that hard..
>  
>

Well the ring buffer doesnt care what you write to it, and if we just 
wrote a TS in all cases then we delegate the decoding and parsing to the 
player app anyway, so basically if it's in the TS stream then we can 
keep it... 

Good luck

Ed W