Provided by: webp_0.6.1-2_amd64 bug

NAME

       webpmux  -  create  animated WebP files from non-animated WebP images, extract frames from
       animated WebP images, and manage XMP/EXIF metadata and ICC profile.

SYNOPSIS

       webpmux -get GET_OPTIONS INPUT -o OUTPUT
       webpmux -set SET_OPTIONS INPUT -o OUTPUT
       webpmux -strip STRIP_OPTIONS INPUT -o OUTPUT
       webpmux -frame FRAME_OPTIONS [ -frame ... ] [ -loop LOOP_COUNT ]
               [ -bgcolor BACKGROUND_COLOR ] -o OUTPUT
       webpmux -duration DURATION OPTIONS [ -duration ... ] INPUT -o OUTPUT
       webpmux -info INPUT
       webpmux [-h|-help]
       webpmux -version

DESCRIPTION

       This manual page documents the webpmux command.

       webpmux  can  be  used  to  create/extract  from  animated  WebP  files,  as  well  as  to
       add/extract/strip XMP/EXIF metadata and ICC profile.

OPTIONS

   GET_OPTIONS (-get):
       icc    Get ICC profile.

       exif   Get EXIF metadata.

       xmp    Get XMP metadata.

       frame n
              Get nth frame from an animated image. (n = 0 has a special meaning: last frame).

   SET_OPTIONS (-set)
       icc file.icc
              Set ICC profile.

       Where: 'file.icc' contains the ICC profile to be set.

       exif file.exif
              Set EXIF metadata.

       Where: 'file.exif' contains the EXIF metadata to be set.

       xmp file.xmp
              Set XMP metadata.

       Where: 'file.xmp' contains the XMP metadata to be set.

   STRIP_OPTIONS (-strip)
       icc    Strip ICC profile.

       exif   Strip EXIF metadata.

       xmp    Strip XMP metadata.

   DURATION_OPTIONS (-duration)
       Amend  the  duration  of  a  specific interval of frames. This option is only effective on
       animated WebP and has no effect on a single-frame file.

       duration[,start[,end]]
              Where:
              duration is the duration for the interval in  milliseconds  (mandatory).   Must  be
              non-negative.
              start is the starting frame index of the interval (optional).
              end is the ending frame index (inclusive) of the interval (optional).

       The three typical usages of this option are:
              -duration d
                   set the duration to 'd' for the whole animation.
              -duration d,f
                   set the duration of frame 'f' to 'd'.
              -duration d,start,end
                   set the duration to 'd' for the whole [start,end] interval.

              Note that the frames outside of the [start, end] interval will remain untouched.
              The 'end' value '0' has the special meaning 'last frame of the animation'.

       Reminder:
              frame indexing starts at '1'.

   FRAME_OPTIONS (-frame)
       Create an animated WebP file from multiple (non-animated) WebP images.

       file_i +di[+xi+yi[+mi[bi]]]
              Where: 'file_i' is the i'th frame (WebP format), 'xi','yi' specify the image offset
              for this frame, 'di' is the pause duration before next frame, 'mi' is  the  dispose
              method  for  this  frame  (0 for NONE or 1 for BACKGROUND) and 'bi' is the blending
              method for this frame (+b for BLEND or -b for  NO_BLEND).   Argument  'bi'  can  be
              omitted  and  will  default  to  +b  (BLEND).  Also, 'mi' can be omitted if 'bi' is
              omitted and will default to 0 (NONE).  Finally, if 'mi' and 'bi' are  omitted  then
              'xi' and 'yi' can be omitted and will default to +0+0.

       -loop n
              Loop  the  frames  n  number  of times. 0 indicates the frames should loop forever.
              Valid range is 0 to 65535 [Default: 0 (infinite)].

       -bgcolor A,R,G,B
              Background color of the canvas.
              where: 'A', 'R', 'G' and 'B' are integers in the range  0  to  255  specifying  the
              Alpha,    Red,   Green   and   Blue   component   values   respectively   [Default:
              255,255,255,255].

   INPUT
       Input file in WebP format.

   OUTPUT (-o)
       Output file in WebP format.

   Note:
       The nature of EXIF, XMP and ICC data is not checked and is assumed to be valid.

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

       Add ICC profile:
       webpmux -set icc image_profile.icc in.webp -o icc_container.webp

       Extract ICC profile:
       webpmux -get icc icc_container.webp -o image_profile.icc

       Strip ICC profile:
       webpmux -strip icc icc_container.webp -o without_icc.webp

       Add XMP metadata:
       webpmux -set xmp image_metadata.xmp in.webp -o xmp_container.webp

       Extract XMP metadata:
       webpmux -get xmp xmp_container.webp -o image_metadata.xmp

       Strip XMP metadata:
       webpmux -strip xmp xmp_container.webp -o without_xmp.webp

       Add EXIF metadata:
       webpmux -set exif image_metadata.exif in.webp -o exif_container.webp

       Extract EXIF metadata:
       webpmux -get exif exif_container.webp -o image_metadata.exif

       Strip EXIF metadata:
       webpmux -strip exif exif_container.webp -o without_exif.webp

       Create an animated WebP file from 3 (non-animated) WebP images:
       webpmux -frame 1.webp +100 -frame 2.webp +100+50+50
               -frame 3.webp +100+50+50+1+b -loop 10 -bgcolor 255,255,255,255
               -o anim_container.webp

       Get the 2nd frame from an animated WebP file:
       webpmux -get frame 2 anim_container.webp -o frame_2.webp

       Using -get/-set/-strip with input file name starting with '-':
       webpmux -set icc image_profile.icc -o icc_container.webp -- ---in.webp
       webpmux -get icc -o image_profile.icc -- ---icc_container.webp
       webpmux -strip icc -o without_icc.webp -- ---icc_container.webp

AUTHORS

       webpmux 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  Vikas Arora <vikaas.arora@gmail.com>, for the Debian
       project (and may be used by others).

SEE ALSO

       cwebp(1), dwebp(1), gif2webp(1)
       Please refer to http://developers.google.com/speed/webp/ for additional information.

                                        November 10, 2016                              WEBPMUX(1)