vwebp - Man Page
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: https://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 https://developers.google.com/speed/webp/ for additional information.