[linux-dvb] Re: High system load when replaying a recording with AC3 and help setting up a fifo

[Robert_Schneider@lotus.com]

Hi,

I have fixed that by modifying the ac3dec utility to only mute the PCM 
channel when data arrives.

I will send you my patch once I'm back home tonight.

If anybody else is interested, please let me know by mail.

Regards,

Robert




Stefan.Hagendorn@lindy.cc
Sent by: linux-dvb-bounce@linuxtv.org
01.07.2001 19:28

 
        To:     "linux-dvb" <linux-dvb@linuxtv.org>
        cc:     (bcc: Robert Schneider/MUC1/Lotus)
        Subject:        [linux-dvb] High system load when replaying a recording with AC3 and help 
setting up a fifo


Does anyome detect a very high systemload when playing an AC3 recording 
???

Is this due to the pipe which wrotes into a programm .. is there a way to
reduce it like pipe into a fifo and let the decoding program read from
there ??

Btw .. can anyone show me how to setup a FIFO .. let VDR pipe the ac3data
into the fifo and read with a decoder programm from this fifo, but only if
it is not NOTHING .. The Problem on my site is: When ac3dec is started it
mutes my digital input because it switchs the soundcard to raw data. I 
have
connected the dvb-s to the digital input. This way I can hear the tv-sound
an mix other pcm over the soundcard (like playing mp3). VDR now opens the
pipe to ac3dec everytime a recording is replayed, even if it does not
contain ac3 data but the dvb-s is muted for me :-(

Thanks in advance
Stefan




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