[MPlayer-users] (Bugreport) AC3 passthrough on SB Live! 5.1, audio skips

Frederik Klama fklama at f2s.com
Mon May 6 03:14:02 CEST 2002


> > I just found out (trying out the Dolby Digital Demos) that the video
> > stream actually skips with the audio stream (not every time, but most of
> > the time (someskips seem to short for the eye to notice)).
>
> yea, my impression is that alsa skips if the system is under high load.

Yes, it does skip more if I have a high load, but only mplayer playing a DVD 
on a Dual PIII-800 (about 20-25% usage max on each processor) is not really 
what I call high load, and although the skips are less, they do not 
disappear. :(

Frederik Klama

-- 
#!/usr/bin/perl -w
# 526-byte qrpff, Keith Winstein and Marc Horowitz <sipb-iap-dvd at mit.edu>
# MPEG 2 PS VOB file on stdin -> descrambled output on stdout
# arguments: title key bytes in least to most-significant order
$_='while(read+STDIN,$_,2048){$a=29;$c=142;if((@a=unx"C*",$_)[20]&48){$h=5;
$_=unxb24,join"", at b=map{xB8,unxb8,chr($_^$a[--$h+84])}@ARGV;s/...$/1$&/;$d=
unxV,xb25,$_;$b=73;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=($t=255)&($d
>>12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*8^$q<<6))<<9
,$_=(map{$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;$t
^=(72, at z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0, at z)[$_%8]}(16..271))
[$_]^(($h>>=8)+=$f+(~$g&$t))for at a[128..$#a]}print+x"C*", at a}';s/x/pack+/g;eval




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