[mythtv] mythtv network protocol

[Raymond Wagner]

On 6/2/2010 04:49, James Courtier-Dutton wrote:
> Hi,
>
> If I have the mythtv-backend on one PC, and the mythfrontend running
> on another PC.
> The backend uses DVB-S cards as video input.
> What is the protocol across the network?
>    

The protocol is documented here.  http://mythtv.org/wiki/Myth_Protocol

The frontend will attempt to find the file locally (assuming combined 
FE/BE or shared NFS mount), and failing to do so will open a file 
transfer ( 
http://mythtv.org/wiki/ANN_%28Myth_Protocol%29#ANN_FileTransfer and 
http://mythtv.org/wiki/Myth_Protocol/Guide#Starting_the_File_Transfer 
).  Digital tuners record the raw capture from the tuner card, and then 
send that same unaltered file across mythproto.  The only reason you 
would have something transcoded is if you did so to the file on hard 
drive at some point between recording and playback.