Here is one way to get the size and bitrate of a video using ffmpeg:

getvideosize.pl 
#!/usr/bin/perl -w

use strict;
use warnings;

my $file = $ARGV[0];
die "usage: arg1 must be a video file\n" unless $file;

sub trim 
{
    my $string = shift;
    $string =~ s/^\s+//;
    $string =~ s/\s+$//;
    return $string;
}

open (FILE, "ffmpeg -i \"$file\" 2>&1 |");
while (<FILE>)
{
    my $line = $_;
    next unless ($line =~ m/^\s+Stream #.+?: Video/);
    my @pieces = split (',', $line);
    my @vsize = split (' ', trim ($pieces[2]));
    my @vbits = split (' ', trim ($pieces[3]));
    my $video_size = trim (shift @vsize);
    my $video_bits = trim (shift @vbits);
    print "$video_size $video_bits\n";
    last;
}

[download]


Example usage: 
./getvideosize.pl http://bennugd-vlc.googlecode.com/files/sintel_trail
+er-480p.mp4

[download]

Output: 854x480 537

In reply to Get size and bitrate of video with perl and ffmpeg by lancer

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