NAME
    FLV::Info - Extract metadata from Macromedia Flash Video files

SYNOPSIS
        use FLV::Info;
        my $reader = FLV::Info->new();
        $reader->parse('video.flv');
        my %info = $reader->get_info();
        print "$info{video_count} video frames\n";
        print $reader->report();

DESCRIPTION
    This module reads Macromedia Flash Video (FLV) files and reports
    metadata about those files.

LEGAL
    This work is based primarily on the file specification provided by
    Macromedia. Use of that specification is governed by terms indicated at
    the licensing URL specified below.

    http://download.macromedia.com/pub/flash/flash_file_format_specification
    .pdf

    http://www.macromedia.com/licensing/developer/

LICENSE
    Copyright 2006 Clotho Advanced Media, Inc., <cpan@clotho.com>

    Copyright 2007-2008 Chris Dolan, <cdolan@cpan.org>

    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

QUALITY
    We care about code quality. The FLV-Info distribution complies with the
    following quality metrics:

    * Perl::Critic v0.21 passes
    * Devel::Cover test coverage almost 90%
    * Pod::Coverage at 100%
    * Test::Spelling passes
    * Test::Portability::Files passes
    * Test::Kwalitee passes
METHODS
    $pkg->new()
        Creates a new instance.

    $self->parse($filename)
    $self->parse($filehandle)
        Reads the specified file. If the file does not exist or is an
        invalid FLV stream, an exception will be thrown via croak().

        There is no return value.

    $self->get_info()
        Returns a hash with all FLV metadata. Any fields that are
        multivalued are concatenated with a slash (`/') with the most common
        values specified first. For example, a common case is the
        `video_type' which is often `interframe/keyframe' since interframes
        are more common than keyframes. A less common case could be
        `audio_type' of `mono/stereo' if the FLV was mostly one-channel but
        had some packets of two-channel audio.

    $self->report()
        Returns a summary of all FLV metadata as a string. This is a
        human-readable version of the data returned by get_info().

    $self->get_file()
        Returns the FLV::File instance. This will be `undef' until you call
        parse().

SEE ALSO
    FLVTool2
        This is a rather nice Ruby implementation that can read and write
        FLV files. This code helped me figure out that the FLV documentation
        was wrong for the order of attributes in video tags. It also helped
        me understand the meta tags.

        http://inlet-media.de/flvtool2

    AMF::Perl
        This is a Perl implementation of the http://www.amfphp.org/ project
        to create an open source representation of the Flash remote
        communication protocol. This module leverages a small part of
        AMF::Perl to parse FLV meta tags.

    FFmpeg
        FFmpeg is a powerful media conversion utility. It is capable of
        reading and writing FLVs and SWFs. However as of this writing, I
        believe it does not support fast transcoding between FLV and SWF
        formats.

        http://ffmpeg.mplayerhq.hu/

COMPATIBILITY
    This module should work with FLV v1.0 and FLV v1.1 files. Any other
    versions (none known as of this writing) will certainly fail.

    Interaction with FLVs using the screen video codec or using alpha
    channels is not yet tested. If someone has short videos employing those
    features that can be released with the FLV::Info test suite, please
    contact me.

AUTHOR
    Chris Dolan

    This module was originally developed by me at Clotho Advanced Media Inc.
    as part of our MediaLandscape project. Now I maintain it in my spare
    time. I do not anticipate adding new features.