how to use linux command in c++? Post: 302580911

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gif2webp

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)