[linux-dvb] Re: Audio/Video Sync after remultiplexing (more)

[Marcus O.C. Metzler <mocm@netcologne.de>]

Klaus Schmidinger writes:
 > Due to the compiling problems I have mentioned in my previous post
 > I haven't been able to actually play with 'remux' yet, but there's
 > one question that bothers me:

There seems to be something missing in the CVS. I don't see how that
could have happened, but I will get it fixed.

 > 
 > Are you planning to integrate this functionality into the driver?
 > 
No, in the current form it would not be possible to put in the
driver. It takes too much buffer space and time to be feasible.

 > There are several reasons why I think that this is pretty important:
 > 
 > - VDR splits long recordings into multiple files to avoid problems
 >   with the file system and to utilize more than one physical disk.
 >   I guess remuxing each of these files by themselves would cause
 >   trouble at the connecting points.
 > 
 > - VDR's "transfer mode" for viewing a (e.g. encrypted) channel that can
 >   only be received through the second DVB card works by directly copying
 >   the data stream from e.g. /dev/video1 to /dev/video0.
 > 
 > - When watching a broadcast in "time shift" mode VDR replays the data
 >   that has just been recorded.
 > 

If the remuxer is implemented into vdr, there shouldn't be a problem
with all of the above. I will see how that could be done and maybe it
is possible to change something in the driver to avoid remuxing
altogether. I still don't know exactly why these problems occur in the
first place, but playing with the remuxer gave me some ideas.


Marcus

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Dr. Marcus Metzler                             
mocm@netcologne.de                     http://www.metzlerbros.de
mocm@convergence.de                    http://www.convergence.de

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