NAME

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

LEGAL

<http://www.adobe.com/devnet/flv/>

LICENSE

Copyright 2007-2009 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.

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 (2006), I believe it does not support fast transcoding between FLV and SWF formats. Please correct me if I'm mistaken.

<http://ffmpeg.mplayerhq.hu/>

COMPATIBILITY

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.

The AVC support comes from an external patch and reading documentation. I have not personally tested this code on any AVC FLV files.

AUTHOR

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 without external input.

ACKNOWLEDGMENTS

QUALITY

• Perl::Critic v1.098 passes
• Devel::Cover test coverage almost 90%
• Pod::Coverage at 100%
• Test::Spelling passes