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12 Commits

Author SHA1 Message Date
James Zern
2fe27bb96d img2webp: normalize help output 
this makes the output from img2webp and the ordering in doc/tools.md and
man/img2webp.1 consistent

Change-Id: Ic389aaa29c20128f2b87f231be383094602f125b
 2023-03-17 15:37:55 -07:00
jzern@google.com
0825faa4c1 img2webp: add -sharp_yuv/-near_lossless 
Both are global settings. Modifying them at the frame level is left as a
follow up based on need.

Bug: b/272739498
Change-Id: If15256c052f73fe3df56be5e0095e76d9870cc0f
 2023-03-17 09:35:29 -07:00
James Zern
1b0c15db02 man/img2webp.1: update date 
after:
a80954a1 Reword img2webp synopsis command line

Change-Id: I0a5c18f7947d15fcd66dc32fab9b525186f7fcc5
 2022-01-10 10:57:55 -08:00
Pascal Massimino
17bade381a Merge "Reword img2webp synopsis command line" into main 2022-01-05 12:04:26 +00:00
Yannis Guyon
a80954a1d9 Reword img2webp synopsis command line 
See https://bugs.chromium.org/p/webp/issues/detail?id=549

Change-Id: I75562d2ad021d8ec107eb4ced5b28e0abf373324
 2022-01-05 10:15:28 +01:00
James Zern
b6f756e82b update http links 
- prefer https

- metadataworkinggroup.org/com seem to be offline; the web archive link
  was obtained from exiftool: https://exiftool.org/TagNames/MWG.html

- fix kramdown link, rubyforge has been gone a long time

- fix png/zlib links

Bug: webp:544
Bug: b/202302177
Change-Id: Id69de4553e7baf00393f12a2c1acb262443a1a93
 2021-11-23 10:13:40 -08:00
James Zern
b3ff0bdec1 man/{gif2,img2}webp,webpmux: normalize some wording 
Change-Id: Iced9d3dfdaff0356499d4e872c20255edea7bd0b
 2020-05-01 10:31:39 -07:00
Pascal Massimino
64a57d0587 add -version option to anim_dump,anim_diff and img2webp 
This is to harmonize the -h/-version options on all our examples.

+ added GetAnimatedImageVersions() method to anim_util.*

Change-Id: I2304a1c29e310682e97f236d3867274a192a7a09
 2018-04-03 11:46:17 -07:00
skal
94a8377b3e extract the command-line parsing helpers to example_util 
+ make img2webp tool use the text-file parsing option too.

Change-Id: I1976e651bbe8b4701abceba89e054b4fb3c35696
 2018-02-08 08:11:31 +00:00
Vincent Rabaud
45a8b5eb59 Fix lint error with man page. 
LC_ALL=en_US.UTF-8 MANROFFSEQ='' MANWIDTH=80 \
     man --warnings -E UTF-8 -l -Tutf8 -Z img2webp.1 >/dev/null
would trigger it.

BUG=webp:370

Change-Id: I9543112bc58ac424af86bb65f7d894707a5646c7
 2018-01-23 21:18:30 +01:00
James Zern
3363eb6d68 man/img2webp.1: fix formatting warning 
the default is format is roman, fixes:
`R' is a string (producing the registered sign), not a macro.

Change-Id: If2bce714eff1237cd1702ae1143323249d85b93b
 2017-01-23 19:36:14 -08:00
Pascal Massimino
03f40955a3 img2webp: convert a sequence of images to an animated webp 
Usage:

  img2webp [file-level options] [image files...] [per-frame options...]

File-level options (only used at the start of compression):
 -min_size ............ minimize size
 -loop <int> .......... loop count (default: 0, = infinite loop)
 -kmax <int> .......... maximum number of frame between key-frames
                        (0=only keyframes)
 -kmin <int> .......... minimum number of frame between key-frames
                        (0=disable key-frames altogether)
 -mixed ............... use mixed lossy/lossless automatic mode
 -v ................... verbose mode
 -h ................... this help

Per-frame options (only used for subsequent images input):
 -d <int> ............. frame duration in ms (default: 100)
 -lossless  ........... use lossless mode (default)
 -lossy ... ........... use lossy mode
 -q <float> ........... quality
 -m <int> ............. method to use

example: img2webp -loop 2 in0.png -lossy in1.jpg
                  -d 80 in2.tiff -o out.webp

Change-Id: I23771b90eaf0660f420d7ffd304e704155386286
 2016-12-02 11:44:17 +01:00