webp-simple-converter

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta name="generator" content="groff -Thtml, see www.gnu.org"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta name="Content-Style" content="text/css"> <style type="text/css"> p { margin-top: 0; margin-bottom: 0; } pre { margin-top: 0; margin-bottom: 0; } table { margin-top: 0; margin-bottom: 0; } </style> <title>VWEBP</title> </head> <body> <h1 align=center>VWEBP</h1> <a href="#NAME">NAME</a> <a href="#SYNOPSIS">SYNOPSIS</a> <a href="#DESCRIPTION">DESCRIPTION</a> <a href="#OPTIONS">OPTIONS</a> <a href="#KEYBOARD SHORTCUTS">KEYBOARD SHORTCUTS</a> <a href="#BUGS">BUGS</a> <a href="#EXAMPLES">EXAMPLES</a> <a href="#AUTHORS">AUTHORS</a> <a href="#SEE ALSO">SEE ALSO</a> <hr> <a name="NAME"></a> <h2>NAME</h2> vwebp − decompress a WebP file and display it in a window <a name="SYNOPSIS"></a> <h2>SYNOPSIS</h2> vwebp [options] input_file.webp <a name="DESCRIPTION"></a> <h2>DESCRIPTION</h2> This manual page documents the vwebp command. vwebp decompresses a WebP file and displays it in a window using OpenGL. <a name="OPTIONS"></a> <h2>OPTIONS</h2> <table width="100%" border=0 rules="none" frame="void" cellspacing="0" cellpadding="0"> <tr valign="top" align="left"> <td width="11%"></td> <td width="3%"> −h </td> <td width="8%"></td> <td width="30%"> Print usage summary. </td> <td width="48%"> </td> </table> −version Print version number and exit. <table width="100%" border=0 rules="none" frame="void" cellspacing="0" cellpadding="0"> <tr valign="top" align="left"> <td width="11%"></td> <td width="9%"> −noicc </td> <td width="2%"></td> <td width="56%"> Don’t use the ICC profile if present.</td> <td width="22%"> </td> </table> −nofancy Don’t use the fancy YUV420 upscaler. −nofilter Disable in-loop filtering. −dither strength Specify a dithering strength between 0 and 100. Dithering is a post-processing effect applied to chroma components in lossy compression. It helps by smoothing gradients and avoiding banding artifacts. Default: 50. −noalphadither By default, quantized transparency planes are dithered during decompression, to smooth the gradients. This flag will prevent this dithering. −usebgcolor Fill transparent areas with the bitstream’s own background color instead of checkerboard only. Default is white for non-animated images. <table width="100%" border=0 rules="none" frame="void" cellspacing="0" cellpadding="0"> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> −mt </td> <td width="4%"></td> <td width="78%"> Use multi-threading for decoding, if possible.</td> <tr valign="top" align="left"> <td width="11%"></td> <td width="7%"> −info </td> <td width="4%"></td> <td width="78%"> Display image information on top of the decoded image.</td> </table> −− string Explicitly specify the input file. This option is useful if the input file starts with an ’−’ for instance. This option must appear last. Any other options afterward will be ignored. If the input file is "−", the data will be read from stdin instead of a file. <a name="KEYBOARD SHORTCUTS"></a> <h2>KEYBOARD SHORTCUTS</h2> <table width="100%" border=0 rules="none" frame="void" cellspacing="0" cellpadding="0"> <tr valign="top" align="left"> <td width="11%"></td> <td width="4%"> ’c’ </td> <td width="7%"></td> <td width="78%"> Toggle use of color profile. </td> <tr valign="top" align="left"> <td width="11%"></td> <td width="4%"> ’b’ </td> <td width="7%"></td> <td width="78%"> Toggle display of background color.</td> <tr valign="top" align="left"> <td width="11%"></td> <td width="4%"> ’i’ </td> <td width="7%"></td> <td width="78%"> Overlay file information. </td> <tr valign="top" align="left"> <td width="11%"></td> <td width="4%"> ’d’ </td> <td width="7%"></td> <td width="78%"> Disable blending and disposal process, for debugging purposes.</td> </table> ’q’ / ’Q’ / ESC Quit. <a name="BUGS"></a> <h2>BUGS</h2> 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/ <a name="EXAMPLES"></a> <h2>EXAMPLES</h2> vwebp picture.webp vwebp picture.webp -mt -dither 0 vwebp −− −−−picture.webp <a name="AUTHORS"></a> <h2>AUTHORS</h2> vwebp 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 for the Debian project (and may be used by others). <a name="SEE ALSO"></a> <h2>SEE ALSO</h2> dwebp(1) Please refer to http://developers.google.com/speed/webp/ for additional information. <hr> </body> </html>