Also, running subprocesseses using list context is safer in case of some special characters in the file name: open(FILE,"-|",qw(ffprobe -i),$file).
Unfortunately, it will be necessary to use some special tricks to hide the STDERR, for example, (untested; written for ugly avconv output) 
use IPC::Run 'run';
my $file = $ARGV[0] || die;
my $line;
run [ qw(ffprobe -show_streams),$file ], '&>', \$line || die "$!\n"; 

my ($width,$height);
for (split /\n/,$line) {
    $width = $1 if /width=(\d+)/;
    $height = $1 if /height=(\d+)/;
#    ...
    $_ eq '[/STREAM]' && defined $width && defined $height && print "$
+{width}x${height}\n" && last
}

[download]
Sorry if my advice was wrong.

In reply to Re: Get size and bitrate of video with perl and ffmpeg by aitap
in thread Get size and bitrate of video with perl and ffmpeg by lancer

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