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

img2webp 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 by Pascal Massimino <pascal.massimino@gmail.com>, for the Debian project
       (and may be used by others).

       This manual page documents the img2webp command.

       img2webp compresses a sequence of images using the animated WebP format.  Input images can either be PNG,
       JPEG,  TIFF  or  WebP.   If  a  single file name (not starting with the character '-') is supplied as the
       argument, the command line arguments are actually  tokenized  from  this  file.   This  allows  for  easy
       scripting or using a large number of arguments.

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

       If there were no problems during execution, img2webp exits with the value of the C constant EXIT_SUCCESS.
       This is usually zero.

       If an error occurs, img2webp exits with the value of the C constant EXIT_FAILURE. This is usually one.

       The  file-level  options are applied at the beginning of the compression process, before the input frames
       are read.

       -ostring
              Specify the name of the output WebP file.

       -min_size
              Encode images to achieve smallest size. This disables key frame insertion and picks the parameters
              resulting in the smallest output for each frame. It uses lossless compression by default, but  can
              be combined with -q, -m, -lossy or -mixed options.

       -kminint-kmaxint
              Specify  the  minimum and maximum distance between consecutive key frames (independently decodable
              frames) in the output animation. The tool will insert some key frames into the output animation as
              needed so that this criteria is satisfied.
              -mixed Mixed compression mode: optimize compression of  the  image  by  picking  either  lossy  or
              lossless  compression  for  each frame heuristically. This global option disables the local option
              -lossy and -lossless .

       -near_losslessint
              Specify the level of near-lossless image preprocessing. This option adjusts pixel values  to  help
              compressibility,  but  has  minimal impact on the visual quality. It triggers lossless compression
              mode automatically. The range is 0 (maximum preprocessing) to 100 (no preprocessing, the default).
              The typical value is around 60. Note that lossy with -q100 can at times yield better results.

       -sharp_yuv
              Use more accurate and sharper RGB->YUV conversion. Note that  this  process  is  slower  than  the
              default 'fast' RGB->YUV conversion.

       -loopint
              Specifies the number of times the animation should loop. Using '0' means 'loop indefinitely'.

       -v     Be more verbose.

       -h,-help
              A short usage summary.

       -version
              Print the version numbers of the relevant libraries used.

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

       The  per-frame options are applied for the images following as arguments in the command line. They can be
       modified any number of times preceding each particular input image.

       -dint Specify the image duration in milliseconds.

       -lossless,-lossy
              Compress the next image(s) using lossless or lossy compression mode. The default mode is lossless.

       -qfloat
              Specify the compression factor between 0 and 100. The default is 75.

       -mint Specify the compression method to use. This parameter controls  the  trade  off  between  encoding
              speed  and the compressed file size and quality.  Possible values range from 0 to 6. Default value
              is 4.  When higher values are used,  the  encoder  will  spend  more  time  inspecting  additional
              encoding  possibilities  and  decide  on  the  quality  gain.   Lower  value  can result in faster
              processing time at the expense of larger file size and lower compression quality.

       -exact,-noexact
              Preserve  or  alter  RGB  values  in  transparent  area.  The  default  is   -noexact,   to   help
              compressibility. Note -noexact may cause artifacts in frames compressed with -lossy.

       Please report all bugs to the issue tracker: https://issues.webmproject.org
       Patches         welcome!         See         this         page          to          get          started:
       https://www.webmproject.org/code/contribute/submitting-patches/

webpmux(1), gif2webp(1)
       Please refer to https://developers.google.com/speed/webp/ for additional information.

                                                November 26, 2024                                    IMG2WEBP(1)

img2webp [file_options] [[frame_options] frame_file]... [-o webp_file]
       img2webpargument_file_name