img2webp(1)

1IMG2WEBP(1)                 General Commands Manual                IMG2WEBP(1)
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NAME

6       img2webp - create animated WebP file from a sequence of input images.
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SYNOPSIS

9       img2webp [file_level_options] [files] [per_frame_options...]
10       img2webp argument_file_name
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DESCRIPTION

13       This manual page documents the img2webp command.
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15       img2webp  compresses  a sequence of images using the animated WebP for‐
16       mat.  Input images can either be PNG, JPEG, TIFF or WebP.  If a  single
17       file  name  (not  starting  with  the character '-') is supplied as the
18       argument, the command line argument are actually  tokenized  from  this
19       file.   This  allows  for easy scripting or using large number of argu‐
20       ments.
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FILE-LEVEL OPTIONS

23       The file-level options are applied at the beginning of the  compression
24       process, before the input frames are read.
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26       -o string
27              Specify the name of the output WebP file.
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29       -min_size
30              Encode  images to achieve smallest size. This disables key frame
31              insertion and picks the parameters resulting in smallest  output
32              for each frame. It uses lossless compression by default, but can
33              be combined with -q, -m, -lossy or -mixed options.
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35       -kmin int
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37       -kmax int
38              Specify the minimum and maximum distance between consecutive key
39              frames (independently decodable frames) in the output animation.
40              The tool will insert some key frames into the  output  animation
41              as needed so that this criteria is satisfied.
42              -mixed Mixed compression mode: optimize compression of the image
43              by picking either lossy or lossless compression for  each  frame
44              heuristically.  This  global  option  disables  the local option
45              -lossy and -lossless .
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47       -loop int
48              Specifies the number of times the animation should  loop.  Using
49              '0' means 'loop indefinitely'.
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51       -v     Be more verbose.
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53       -h, -help
54              A short usage summary.
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56       -version
57              Print the version numbers of the relevant libraries used.
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PER-FRAME OPTIONS

61       The per-frame options are applied for the images following as arguments
62       in the command line. They can be modified any number of times preceding
63       each particular input image.
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65       -d int Specify the image duration in milliseconds.
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67       -lossless, -lossy
68              Compress  the  next image(s) using lossless or lossy compression
69              mode. The default mode is lossless.
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71       -q float
72              Specify the compression factor between 0 and 100. The default is
73              75.
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75       -m int Specify  the  compression method to use. This parameter controls
76              the trade off between encoding speed  and  the  compressed  file
77              size  and  quality.   Possible values range from 0 to 6. Default
78              value is 4.
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EXAMPLE

82       img2webp -loop 2 in0.png -lossy in1.jpg -d 80 in2.tiff -o out.webp
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BUGS

86       Please    report     all     bugs     to     the     issue     tracker:
87       https://bugs.chromium.org/p/webp
88       Patches  welcome!  See  this  page  to get started: http://www.webmpro‐
89       ject.org/code/contribute/submitting-patches/
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AUTHORS

93       img2webp is a part of libwebp and was written by the WebP team.
94       The  latest  source  tree  is  available  at   https://chromium.google‐
95       source.com/webm/libwebp
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97       This   manual   page  was  written  by  Pascal  Massimino  <pascal.mas‐
98       simino@gmail.com>, for the Debian project (and may be used by others).
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