On Sat, 2003-06-07 at 22:06, Rob Blomquist wrote:
> On Friday 06 June 2003 11:31 pm, Rob Blomquist wrote:
> > I regualrily download streaming-mp3 files with XMMS. And I want to clean
> > them up with Audacity, but above about 20Mb it crashes while loading the
> > file. For the record my machine is a AMD 2100+ with 512 Mb of RAM and about
> > 2Gb free under /home.
> >
> > I really need to edit mp3s up to about 1 hour in length, which would
> > require about 70Mb files.
> >
> > Any ideas on how to edit them? Console would be fine, too, just so long as
> > I have an indexing method to find the start and stop positions.
>
> I figured it out. I used "lame -decode" to convert the file (in this case only
> about 41Mb to a wav file of 617Mb then uploaded it into Audacity without a
> hitch.
wow. Sucks to have to go through that, both for quality loss and for
time spent, but I'm glad you found a workaround. If you've got to spend
any serious time on it, here's a script I've been using. I've cleaned up
the original some, and it could use a ton more cleanup, but...
--
Jack Coates
Monkeynoodle: A Scientific Venture...
http://www.monkeynoodle.org/resume.html
#!/usr/bin/perl
# ver 0.06
# If you are looking for the TEMPDIR setting
# scroll down a bit :)
# mp3recode is a quick and dirty script to
# re-encode mp3's which fall below a certain
# bitrate (in this case 128). It will determine
# which mp3's fall below this rate, and re-encode them
# to a specified bitrate. It moves the 'old' mp3
# to a temporary directory.
# thanks to Boort for his contibuted renaming function
# this script is released under the GPL
# USAGE
# mp3recode <rate-cap> <new encode rate>
# Begin
use MPEG::MP3Info;
# check is the bitrate -below which- you want
# a re-encode to take place
$check=$ARGV[0];
if (!($check)){
$check=128;
}
# rate_out is the rate in which the
# mp3 is re-encoded. It defaults to
# 128 (thus all files below 128
# are re-encoded for 128)
# YES, this does increase the filesize with
# NO increase in quality-- but many situations
# call for minimally a 128 encode.
$rate_out=$ARGV[1];
if (!($rate_out)){
$rate_out=128;
}
######### Temp Dir ########
# Mp3recode moves the 'old' mp3's to
# a safe location for safety sake
# CHANGE the BELOW to a temp
# directory to store the old mp3's
# MAKE sure to include a trailing "/"
# example: /home/foo/temp/
$tempdir="/home/jack/tmp/";
if (!($tempdir)){
print "Edit mp3recode.pl and set a temp directory!\n";
exit;
}
# whatever options for lame you desire, slap here
# the default is for high quaility, at 128kb/sec.
# if you want to alter the re-encode bitrate, change
# the -b $check to whatever. BE aware, lower encoded
# mp3's will probably not be able to be re-encoded
# at a rate higher than 128 unless they have a frequency
# higher than 22.05
$lame_opts="lame -h -b $rate_out";
# nasty filenames can cause problems
# belows is a modification of rajak's
# quick and dirty renamer. Renames
# spaces, ()'s, and "'"'s.
foreach $xold (`ls *.mp3`){
chomp $xold;
$xnew = $xold;
$xn = $xold;
$xnew = lc($xn); ## lowercase it
$xnew =~ s/\%20/_/g; ## Converts netscape screwup to a _
$xnew =~ s/\ /_/g; ## Converts space to a _
$xnew =~ s/\(/-/g; ## Removes ( and subs -
$xnew =~ s/\)//g; ## Removes )
$xnew =~ s/\[/-/g; ## Removes [ and subs -
$xnew =~ s/\]//g; ## Removes ]
$xnew =~ s/\{/-/g; ## Removes { and subs -
$xnew =~ s/\}//g; ## Removes }
$xnew =~ s/\#//g; ## Removes #
$xnew =~ s/\!//g; ## Removes !
$xnew =~ s/\~//g; ## Removes ~
$xnew =~ s/\'//g; ## Hickey remover
$xnew =~ s/_-_/-/g; ## Shorten _-_ to -
$xnew =~ s/-*-/-/g; ## Shorten 2 or more -- to 1 -
$xnew =~ s/_*_/_/g; ## Shorten 2 or more __ to 1 _
$xnew =~ s/-_/-/g; ## Clean up -_ to -
$xnew =~ s/\&/\+/g; ## Clean up & for eaiser use in unix
$xnew =~ s/\,_/\+/g; ## Set up for format artist1+artist2
$xnew =~ s/_\+_/\+/g; ## Shorten _+_ to +
$xnew =~ s/_-/-/g; ## Clean up _- to -
$xnew =~ s/-\./\./g; ## Remove extra -'s infront of .mp3
$xnew =~ s/\.-/\./g; ## Remove extra -'s behind a dot
$xnew =~ s/\._/\./g; ## Remove extra _'s behind a dot
$xnew =~ s/^-//g; ## Remove - at beginning of filename
$xnew =~ s/^_//g; ## Remove _ at beginning of filename
$xnew =~ s/^\.//g; ## Unhide files
if($xnew ne $xold){
print "Renaming $xold to $xnew\n";
rename $xold, $xnew or die "Failed renaming $xold\n";
}
}
# Misc variables and main loop
# Hat's off to Ralf D. Werner, who contributed
# a modification which preserves ID3tag info
# (in this case only the artist and title)
while($file = <*.mp3> ) {
my $info1 = get_mp3info($file);
my $rate= ($info1->{BITRATE});
my $freq= ($info1->{FREQUENCY});
my $info2 = get_mp3tag($file);
my $artist= ($info2->{ARTIST});
my $title= ($info2->{TITLE});
my $year= ($info2->{YEAR});
my $album= ($info2->{ALBUM});
my $tag_cmd = "--tt \"$title\" --ta \"$artist\"";
$freq=($freq*1000);
if ($rate == $rate_out){
next;
}
if ($rate < $check){
$file =~ s/\/.*\///;
printf "$file\'s bitrate is %d", $rate;
print "\n";
print "Re-encoding $file\n";
$file_out=$file;
$file_out =~ s/mp3$/tmp/;
$file_recode=$file_out;
$file_recode=~s/.tmp/.new.mp3/;
print "$file frequency is $freq\n";
$lame="$lame_opts -s $freq --mp3input";
system ("$lame $tag_cmd $file $file_recode");
rename "$file", "$tempdir$file";
rename "$file_recode", "$file";
}
}
Want to buy your Pack or Services from MandrakeSoft?
Go to http://www.mandrakestore.com
