Man page - vwebp(1)

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Package: webp
apt-get install webp

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webp

Manual

VWEBP

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
KEYBOARD SHORTCUTS
EXIT STATUS
EXAMPLES
AUTHORS
REPORTING BUGS
SEE ALSO

NAME

vwebp - decompress a WebP file and display it in a window

SYNOPSIS

vwebp [ options ] input_file.webp

DESCRIPTION

This manual page documents the vwebp command.

vwebp decompresses a WebP file and displays it in a window using OpenGL.

OPTIONS

-h

Print usage summary.

-version

Print version number and exit.

-noicc

Don’t use the ICC profile if present.

-nofancy

Don’t use the fancy YUV420 upscaler.

-nofilter

Disable in-loop filtering.

-dither strength

Specify a dithering strength between 0 and 100. Dithering is a post-processing effect applied to chroma components in lossy compression. It helps by smoothing gradients and avoiding banding artifacts. Default: 50.

-noalphadither

By default, quantized transparency planes are dithered during decompression, to smooth the gradients. This flag will prevent this dithering.

-usebgcolor

Fill transparent areas with the bitstream’s own background color instead of checkerboard only. Default is white for non-animated images.

	-mt		Use multi-threading for decoding, if possible.
	-info		Display image information on top of the decoded image.

-- 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.

KEYBOARD SHORTCUTS

	’c’		Toggle use of color profile.
	’b’		Toggle display of background color.
	’i’		Overlay file information.
	’d’		Disable blending and disposal process, for debugging purposes.

’q’ / ’Q’ / ESC

Quit.

EXIT STATUS

If there were no problems during execution, vwebp exits with the value of the C constant EXIT_SUCCESS . This is usually zero.

If an error occurs, vwebp exits with the value of the C constant EXIT_FAILURE . This is usually one.

EXAMPLES

vwebp picture.webp
vwebp picture.webp -mt -dither 0
vwebp -- ---picture.webp

AUTHORS

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

This manual page was written for the Debian project (and may be used by others).

REPORTING BUGS

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