vwebp(1) - f33

1VWEBP(1)                    General Commands Manual                   VWEBP(1)
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NAME

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

9       vwebp [options] input_file.webp
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DESCRIPTION

12       This manual page documents the vwebp command.
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14       vwebp  decompresses  a  WebP  file  and  displays  it in a window using
15       OpenGL.
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OPTIONS

18       -h     Print usage summary.
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20       -version
21              Print version number and exit.
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23       -noicc Don't use the ICC profile if present.
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25       -nofancy
26              Don't use the fancy YUV420 upscaler.
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28       -nofilter
29              Disable in-loop filtering.
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31       -dither strength
32              Specify a dithering strength between 0 and 100. Dithering  is  a
33              post-processing  effect  applied  to  chroma components in lossy
34              compression.  It helps by smoothing gradients and avoiding band‐
35              ing artifacts. Default: 50.
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37       -noalphadither
38              By  default,  quantized  transparency planes are dithered during
39              decompression, to smooth the gradients. This flag  will  prevent
40              this dithering.
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42       -usebgcolor
43              Fill transparent areas with the bitstream's own background color
44              instead of checkerboard only. Default is white for  non-animated
45              images.
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47       -mt    Use multi-threading for decoding, if possible.
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49       -info  Display image information on top of the decoded image.
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51       -- string
52              Explicitly  specify the input file. This option is useful if the
53              input file starts with an '-' for  instance.  This  option  must
54              appear  last.   Any  other options afterward will be ignored. If
55              the input file is "-", the data will be read from stdin  instead
56              of a file.
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60       KEYBOARD SHORTCUTS
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62       'c'    Toggle use of color profile.
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64       'b'    Toggle display of background color.
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66       'i'    Overlay file information.
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68       'd'    Disable blending and disposal process, for debugging purposes.
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70       'q' / 'Q' / ESC
71              Quit.
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BUGS

75       Please     report     all     bugs     to     the     issue    tracker:
76       https://bugs.chromium.org/p/webp
77       Patches welcome! See this  page  to  get  started:  http://www.webmpro‐
78       ject.org/code/contribute/submitting-patches/
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EXAMPLES

82       vwebp picture.webp
83       vwebp picture.webp -mt -dither 0
84       vwebp -- ---picture.webp
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AUTHORS

88       vwebp is a part of libwebp and was written by the WebP team.
89       The   latest  source  tree  is  available  at  https://chromium.google‐
90       source.com/webm/libwebp
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92       This manual page was written for the Debian project (and may be used by
93       others).
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