# phpman > man > Image::ExifTool::RIFF(3pm)

## NAME
    [Image::ExifTool::RIFF](https://www.chedong.com/phpMan.php/perldoc/Image%3A%3AExifTool%3A%3ARIFF/markdown) - Read RIFF/AVI/WAV meta information

## SYNOPSIS
    This module is used by [Image::ExifTool](https://www.chedong.com/phpMan.php/perldoc/Image%3A%3AExifTool/markdown)

## DESCRIPTION
    This module contains routines required by [Image::ExifTool](https://www.chedong.com/phpMan.php/perldoc/Image%3A%3AExifTool/markdown) to extract information from RIFF-based
    (Resource Interchange File Format) files, including AVI videos, WAV audio files and WEBP images.

## AUTHOR
    Copyright 2003-2022, Phil Harvey (philharvey66 at gmail.com)

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

## REFERENCES
    <<http://www.exif.org/Exif2-2.PDF>>
    <<http://www.vlsi.fi/datasheets/vs1011.pdf>>
    <<http://www.music-center.com.br/spec_rif.htm>>
    <<http://www.codeproject.com/audio/wavefiles.asp>>
    <<http://msdn.microsoft.com/archive/en-us/directx9_c/directx/htm/avirifffilereference.asp>>
    <<http://wiki.multimedia.cx/index.php?title=TwoCC>>
    <<https://developers.google.com/speed/webp/docs/riff_container>>
    <<https://tech.ebu.ch/docs/tech/tech3306-2009.pdf>>

## SEE ALSO
    "RIFF Tags" in [Image::ExifTool::TagNames](https://www.chedong.com/phpMan.php/perldoc/Image%3A%3AExifTool%3A%3ATagNames/markdown), Image::[ExifTool(3pm)](https://www.chedong.com/phpMan.php/man/ExifTool/3pm/markdown)