[MPlayer-users] DVB streaming buffering

Nico Sabbi nicola_sabbi at fastwebnet.it
Thu Sep 6 23:49:17 CEST 2007


Evan Stergiou wrote:
> Hello. I have a kinda difficult problem here
> so I appreciate any input.
> 
> I am using a PC sat receiver with skystar2 and m-audio (pci audio card).
> I play streaming satellite radio using mplayer and arts.
> I need arts in order to easily mix audio files stored locally and satellite
>  radio.
> 
>  All this works just fine. However, when the satellite reception is not good
> over some period of time
> and gets back to good, I always have a delay (buffering) of 5-10 seconds on
> the streaming radio as compared to a Neta.
> 
>  My tests showed that mplayer is the culprit and not arts, since I have the
>  problem even without arts.
> I also modified the size of the buffer in the
>  /MPlayer-1.0rc1/stream/stream_dvb.c
> but the problem persists.
> 
>  Moreover, when I cut sat reception for a long period (say 5-10 minutes),
>  mplayer hangs and the streaming audio
> does not restores itself when I restart mplayer having reconnected the sat
>  reception beforehand. In order for the streaming audio to work again I have 
> to
> unload/reload b2c2 drivers and then mplayer.
> 
>  Any ideas?
> 
> Thanks in advance.
> 

mplayer keeps on reading from the dvr0 device up to a maximum of
5 consecutive read errors (using a poll-based mechanism, thus with
non-blocking reads), thus I tend to blame the driver for not
signaling either the read error or the right poll status



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