webpmux - animated WebP images, extract frames from animated WebP images, and manage XMP/EXIF metadata and ICC profile.
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 webpmux argument_file_name
WEBPMUX(1) General Commands Manual WEBPMUX(1)
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
webpmux argument_file_name
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. If a single
file name (not starting with the character '-') is supplied as the
argument, the command line argument are actually tokenized from this
file. This allows for easy scripting or using large number of argu-
ments.
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 mean-
ing: 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' spec-
ify 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 (infi-
nite)].
-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.webmpro-
ject.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.google-
source.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).
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+-----------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------------+
|Availability | image/library/libwebp |
+---------------+-----------------------+
|Stability | Pass-through volatile |
+---------------+-----------------------+
SEE ALSO
cwebp(1), dwebp(1), gif2webp(1)
Please refer to http://developers.google.com/speed/webp/ for additional
information.
NOTES
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from http://downloads.webmpro-
ject.org/releases/webp/libwebp-1.0.0-rc3.tar.gz
Further information about this software can be found on the open source
community website at https://www.webmproject.org/.
December 1, 2017 WEBPMUX(1)