Man1 - vwebp.1
Table of Contents
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.
BUGS
Please report all bugs to the issue tracker:
https://bugs.chromium.org/p/webp
Patches welcome! See this page to get started:
http://www.webmproject.org/code/contribute/submitting-patches/
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).
SEE ALSO
*dwebp*(1)
Please refer to http://developers.google.com/speed/webp/ for additional
information.