GIF2WEBP(1) General Commands Manual GIF2WEBP(1)
NAME
gif2webp - Convert a GIF image to WebP
SYNOPSIS
gif2webp [options] input_file.gif -o output_file.webp
DESCRIPTION
This manual page documents the gif2webp command.
gif2webp converts a GIF image to a WebP image.
OPTIONS
The basic options are:
-o string
Specify the name of the output WebP file. If omitted, gif2webp will perform conversion but only report statistics.
-h, -help
Usage information.
-version
Print the version number (as major.minor.revision) and exit.
-lossy Encode the image using lossy compression.
-q float
Specify the compression factor for RGB channels between 0 and 100. The default is 75.
In case of lossless compression (default), a small factor enables faster compression speed, but produces a larger file. Maximum com-
pression is achieved by using a value of 100.
In case of lossy compression (specified by the -lossy option), a small factor produces a smaller file with lower quality. Best qual-
ity is achieved by using a value of 100.
-m int 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 is faster processing time at
the expense of larger file size and lower compression quality.
-f int For lossy encoding only (specified by the -lossy option). Specify the strength of the deblocking filter, between 0 (no filtering)
and 100 (maximum filtering). A value of 0 will turn off any filtering. Higher value will increase the strength of the filtering
process applied after decoding the picture. The higher the value the smoother the picture will appear. Typical values are usually in
the range of 20 to 50.
-v Print extra information.
-quiet Do not print anything.
BUGS
Please report all bugs to our issue tracker: http://code.google.com/p/webp/issues
Patches welcome! See this page to get started: http://www.webmproject.org/code/contribute/submitting-patches/
EXAMPLES
gif2webp picture.gif -o picture.webp
gif2webp -q 70 picture.gif -o picture.webp
gif2webp -lossy -m 3 picture.gif -o picture_lossy.webp
gif2webp -lossy -f 50 picture.gif -o picture.webp
AUTHORS
gif2webp was written by the WebP team.
The latest source tree is available at http://www.webmproject.org/code
This manual page was written by Urvang Joshi <urvang@google.com>, for the Debian project (and may be used by others).
SEE ALSO
dwebp(1), cwebp(1), webpmux(1).
Please refer to http://developers.google.com/speed/webp/ for additional information.
February 01, 2013 GIF2WEBP(1)
