[MPlayer-users] Problems playing with vdr streams.

[Reimar Döffinger]

Hi,

> > > With this option it don't crash anymore.  But audio is missing.  And
> > > occasionally (about every minute) video humbles and artifacts. :-(
> > Just a wild guess, but perhaps this is an audio sampling issue?  Try
> > adding -srate 44100 (or 48000, or any other standard value) and see if
> > it solves the problem.  Couldn't hurt.
> 
> After a lot of experiments, I think I start to understand at least one
> part of the problem:
> 
> The stream comes live directly from a DVB-S card.  So there is really
> _no_ way to change the speed at which data is ariving.
> Now when mplayer plays a little bit faster than data is delivered,
> eventually the cache will get empty.  Now mplayer notice that it can't
> play as fast as it would like so it thinks the system is too slow and
> start dropping frames.  But since the cache is empty, dropping frames
> makes things even worse.
> 
> On the other hand, when playing slower than data is coming, mplayer exits
> with an "End of file" mesage.  I don't understand this effect at all.
> 
> The bad news is that every channel seems to need different -speed settings.
> Even on the same channel is seems that the needed setting changes over the
> time.  So guessing the correct -speed setting via try-and-error is not an
> option :-(

Changing the playbackspeed at runtime is possible. As a first hack, it
might be possible to make the cache change the playbackspeed, you just
need to find somebody to implement it ;-)

Greetings,
Reimar Döffinger