vwebp1

Usage

Overview

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