This narrows the list to 68.6 MB by elminating subsequent duplicates

#!/usr/bin/perl --
use strict;
use warnings;
use Path::Tiny qw/ path /;
use File::Find::Rule qw/ find  /;
use autodie;
use Digest::MD5 qw( md5_hex );

my $qphotoreclog = 'qphotorec.log';

$qphotoreclog = path( $qphotoreclog  )->realpath;
chdir path( $qphotoreclog )->parent;

my $log = path( $qphotoreclog  )->slurp_raw;
my @files;
my %seen;

while( $log =~ m{^(.*?)[\r\n]*$}mg ){
    my $line = $1;
    
    next if  not $line =~ /recup_dir/;
    
    my( $filename, $blocks ) = split ' ', $line, 2;
    my $md5 = md5_hex( path( $filename )->slurp_raw ) ;
    
    push @{$seen{$md5}}, $filename;
    push @files, [ $filename, $blocks , $md5 , int@{$seen{$md5}} ];
}
undef $log;


# dd(\@files );

use constant FILENAME => 0;
use constant SEEN => 3;

print "Files before ", int @files, "\n";

@files =  map { $_->[FILENAME] } grep { $_->[SEEN()] == 1 } @files;

print "Files after ", int @files, "\n";

# dd(\@files );

path('myfinalrecup')->mkpath;
for my $filename ( @files ){
    path( $filename )->copy( 'myfinalrecup/' );
}
__END__
Files before 40330
Files after 6341
[download]

Cant really see a relationship between the blocks and the filename , probably there isnt one

    [
      "recup_dir.3/f8580464.txt",
      "70013087-70013102",
      "2615e08f437222995c7aab0569f015f3",
      1,
      
    [
      "C:/undelet/testdisk-7.0.win/recup_dir.3/f8580480.txt",
      "70013103-70013110",
      "6fb0dd36db299c9b713d5c622bf5b499",
      1,
    ],
    ...
    [
      "recup_dir.3/f8583480.txt",
      "70016103-70016118",
      "2615e08f437222995c7aab0569f015f3",
      2,
    ],
[download]