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README: update help text, repo link

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Change-Id: Iebcd05932572908abe4fcd0bb39a04dde9325199
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James Zern 2015-12-16 18:13:02 -08:00
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@ -15,7 +15,8 @@ as well as the command line tools 'cwebp' and 'dwebp'.
See http://developers.google.com/speed/webp See http://developers.google.com/speed/webp
Latest sources are available from http://www.webmproject.org/code/ The latest source tree is available at
https://chromium.googlesource.com/webm/libwebp
It is released under the same license as the WebM project. It is released under the same license as the WebM project.
See http://www.webmproject.org/license/software/ or the See http://www.webmproject.org/license/software/ or the
@ -194,6 +195,8 @@ Options:
green=0xe0 and blue=0xd0 green=0xe0 and blue=0xd0
-noalpha ............... discard any transparency information -noalpha ............... discard any transparency information
-lossless .............. encode image losslessly -lossless .............. encode image losslessly
-near_lossless <int> ... use near-lossless image
preprocessing (0..100=off)
-hint <string> ......... specify image characteristics hint, -hint <string> ......... specify image characteristics hint,
one of: photo, picture or graph one of: photo, picture or graph
@ -356,6 +359,10 @@ Options:
or lossless compression heuristically or lossless compression heuristically
-q <float> ............. quality factor (0:small..100:big) -q <float> ............. quality factor (0:small..100:big)
-m <int> ............... compression method (0=fast, 6=slowest) -m <int> ............... compression method (0=fast, 6=slowest)
-min_size .............. minimize output size (default:off)
lossless compression by default; can be
combined with -q, -m, -lossy or -mixed
options
-kmin <int> ............ min distance between key frames -kmin <int> ............ min distance between key frames
-kmax <int> ............ max distance between key frames -kmax <int> ............ max distance between key frames
-f <int> ............... filter strength (0=off..100) -f <int> ............... filter strength (0=off..100)
@ -383,8 +390,13 @@ Comparison of animated images:
Test utility anim_diff under examples/ can be used to compare two animated Test utility anim_diff under examples/ can be used to compare two animated
images (each can be GIF or WebP). images (each can be GIF or WebP).
Usage: Usage: anim_diff <image1> <image2> [options]
anim_diff <image1> <image2> [-dump_frames <folder>] [-min_psnr <float>]
Options:
-dump_frames <folder> dump decoded frames in PAM format
-min_psnr <float> ... minimum per-frame PSNR
-raw_comparison ..... if this flag is not used, RGB is
premultiplied before comparison
Building: Building:
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