my $line = $_;
That is usually written as:
while (my $line = <FILE>)
my @vsize = split (' ', trim ($pieces));
my @vbits = split (' ', trim ($pieces));
my $video_size = trim (shift @vsize);
my $video_bits = trim (shift @vbits);
split ' ' removes ALL whitespace so the use of the trim function is superfluous.
my ( $video_size ) = split ' ', $pieces[ 2 ];
my ( $video_bits ) = split ' ', $pieces[ 3 ]
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