NAME¶

dwp2 - decompress a WP2 file to an image file

SYNOPSIS¶

dwp2 [options] input_file.wp2

DESCRIPTION¶

This manual page documents the dwp2 command.

dwp2 decompresses WP2 files into PNG, PAM, PPM or PGM images.

OPTIONS¶

The basic options are:

-h

Print usage summary.

-version

Print the version number (as major.minor.revision) and exit.

-o string

Specify the name of the output file (as PNG format by default). Using "-" as output name will direct output to 'stdout'.

-- string

Explicitly specify the input file. This option is useful if the input file starts with an '-' for instance. This option must appear last. Any other options afterward will be ignored. If the input file is "-", the data will be read from stdin instead of a file.

-bmp

Change the output format to uncompressed BMP.

-tiff

Change the output format to uncompressed TIFF.

-pam

Change the output format to PAM (retains alpha).

-ppm

Change the output format to PPM (discards alpha).

-pgm

Change the output format to PGM. The output consists of luma/chroma samples instead of RGB, using the IMC4 layout. This option is mainly for verification and debugging purposes.

-mt

Use multi-threaded parallel decoding if possible.

-dbg

Superimpose visual debugging information on the decoded picture.

-v

Print extra information (decoding time in particular).

BUGS¶

Please report all bugs to the issue tracker: https://bugs.chromium.org/p/webp2
Patches welcome! See this page to get started: http://www.webmproject.org/code/contribute/submitting-patches/

EXAMPLES¶

dwp2 picture.wp2 -o output.png

AUTHORS¶

dwp2 is a part of libwebp2 and was written by the WebP team.
The latest source tree is available at https://chromium.googlesource.com/codecs/libwebp2/

This manual page was written by Pascal Massimino <pascal.massimino@gmail.com>, for the Debian project (and may be used by others).

SEE ALSO¶

cwp2(1),vwp2(1)