/
719.txt
182 lines (132 loc) · 7.32 KB
/
719.txt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
[29] [DFN[[[APNG]]]] は、 [[PNG]] に[[アニメーション]]対応を追加した[[画像形式]]です。
[[GIF]] に対する[[アニメーションGIF]]に相当しますが、 [[PNG]]
同様にすべての[[色]]を使うことができます。
* 仕様書
[REFS[
- [28] [CITE@en[APNG Specification - MozillaWiki]] ([TIME[2014-09-17 23:50:23 +09:00]] 版) <https://wiki.mozilla.org/APNG_Specification>
]REFS]
* 文脈
[30] [[Web]] では、 [[Firefox]] と [[Safari]] が対応しています。
[39] [[LINEスタンプ]]でも採用されています。
* MIME 型
[38] [[PNG]] と互換性があるので、通常は [CODE(MIME)@en[[[image/png]]]]
が用いられます。
[36] 他に [DFN[[CODE(MIME)@en[[[image/vnd.mozilla.apng]]]]]] があります。
[[IANA登録簿]]にも2015年8月に登録 [SRC[>>37]] されています。
* 競合
[44] 次の競合する[[アニメーション形式]]があります。
[FIG(list)[
- [[アニメーションGIF]] - 普及しているが[[256色]]制限がある
- [[Animated WebP]] - あまり実装されていない
- [[WebM]] - [[動画形式]]であり、[[スマートフォン]]の[[Webブラウザー]]では[[自動再生]]できない
- [[MNG]] - 失敗した
]FIG]
* 歴史
[1]
[CITE[APNG 0.4]] <http://www.vlad1.com/~vladimir/projects/apng/>
([[名無しさん]])
[2]
[CITE[APNG 0.4]] ([CODE[2004-09-11 03:21:05 +09:00]] 版) <http://www.vlad1.com/~vladimir/projects/apng/AnimatedPNG.html>
([[名無しさん]])
[3]
[CITE[APNG Implementation]] ([CODE[2007-03-20 11:58:30 +09:00]] 版) <http://littlesvr.ca/apng/>
([[名無しさん]])
[4]
[CITE@en[APNG Specification - MozillaWiki]] ([CODE[2007-03-20 16:39:29 +09:00]] 版) <http://wiki.mozilla.org/APNG_Specification>
0.8
([[名無しさん]] [WEAK[2007-03-21 03:35:25 +00:00]])
[5]
[CITE[Bug 257197 – Add APNG support for Mozilla]] ([CODE[2007-03-21 12:33:07 +09:00]] 版) <https://bugzilla.mozilla.org/show_bug.cgi?id=257197>
([[名無しさん]])
[6]
[CITE[APNG・これまでの経緯]] ([CODE[2007-05-31 21:03:48 +09:00]] 版) <http://tsuki.jpn.org/png/apng/ikisatsu.html>
([[名無しさん]] [WEAK[2007-06-15 12:20:23 +00:00]])
[7]
[CITE[APNGメモ]] ([CODE[2007-06-12 02:03:14 +09:00]] 版) <http://tsuki.jpn.org/png/apng/>
([[名無しさん]])
[8]
[CITE[Bug 257263 – APNG spec discussion]] ([CODE[2007-06-15 21:20:06 +09:00]] 版) <https://bugzilla.mozilla.org/show_bug.cgi?id=257263>
([[名無しさん]])
[9]
[CITE[PNG Group animation proposal comparison + test-software]] ([CODE[2007-05-08 23:45:22 +09:00]] 版) <http://gjuyn.xs4all.nl/pnganim.html>
([[名無しさん]])
[10]
[CITE[Innnards: MNG is dead, long live APNG]] ([CODE[2007-06-14 23:51:18 +09:00]] 版) <http://www.boutell.com/innards/apng.html>
([[名無しさん]])
[11]
>>6 いろいろ考えさせられますなあ。
([[名無しさん]] [WEAK[2007-06-15 12:31:43 +00:00]])
[12]
[CITE[Vladimir Vukićević » Blog Archive » APNG or maybe not PNG?]] ([CODE[2007-06-15 21:29:53 +09:00]] 版) <http://blog.vlad1.com/archives/2007/04/26/143/>
([[名無しさん]])
[13]
[CITE[Latest topics > Mozilla/Firefoxが好きだけど嫌いな理由 - outsider reflex]] ([[Piro(SHIMODA Hiroshi)]] 著, [CODE[2007-06-15 20:41:06 +09:00]] 版) <http://piro.sakura.ne.jp/latest/blosxom/mozilla/misc/2007-06-13_policy.htm>
([[名無しさん]] [WEAK[2007-06-15 12:34:55 +00:00]])
[14]
[CITE[A blog? with Σαιτω - APNG]] ([CODE[2007-09-21 11:17:49 +09:00]] 版) <http://d.hatena.ne.jp/saiton/20070917/1189991548>
([[名無しさん]])
[15]
[CITE[APNG Update - Anne’s Weblog]] ([CODE[2007-09-21 14:50:23 +09:00]] 版) <http://annevankesteren.nl/2007/09/apng-update>
([[名無しさん]])
[16]
[CITE[A blog? with Σαιτω - APNG]] ([TIME[2007-09-29 02:48:27 +09:00]] 版) <http://d.hatena.ne.jp/saiton/20070927/1190883470>
[17]
[CITE@en-US[Mozilla Labs » Blog Archive » Better animations in Firefox 3]] ([TIME[2008-11-11 02:29:55 +09:00]] 版) <http://labs.mozilla.com/2007/08/better-animations-in-firefox-3/>
[18] [CITE@en[APNG Feature Detection | Elijah Grey]] ([TIME[2009-03-17 08:56:38 +09:00]] 版) <http://eligrey.com/2009/03/03/apng-feature-detection/>
[19] [CITE[Suggested changes to APNG 1.0 Specification]]
([TIME[2007-09-21 06:36:16 +09:00]] 版)
<http://philip.html5.org/docs/apng/changes.html>
[20] [CITE@en[APNG Specification - MozillaWiki]]
( ([TIME[2013-08-10 14:11:55 +09:00]] 版))
<https://wiki.mozilla.org/APNG_Specification>
[21] [CITE@en-US[APNG - the animated PNG]]
( ([TIME[2013-10-10 09:14:59 +09:00]] 版))
<http://web.archive.org/web/20110902000118/http://animatedpng.com/>
[22] [CITE@en[APNG - Wikipedia, the free encyclopedia]]
( ([TIME[2014-04-08 18:56:11 +09:00]] 版))
<http://en.wikipedia.org/wiki/APNG>
[23] [CITE@en[PNG and MNG/JNG image formats: home site / Mailing Lists]]
( ([TIME[2014-04-12 13:56:13 +09:00]] 版))
<http://sourceforge.net/p/png-mng/mailman/message/131482/>
[24] [CITE@en-US[Can I use... Support tables for HTML5, CSS3, etc]]
( ([TIME[2014-07-20 16:48:55 +09:00]] 版))
<http://caniuse.com/#search=apng>
[25] [CITE[Animated PNG's - APNGs.com]]
( ([TIME[2014-09-18 04:49:27 +09:00]] 版))
<http://web.archive.org/web/20110701061420/http://apngs.com/>
[26] [CITE[Animated PNGs are dead and will never return.]]
( ([TIME[2013-04-27 21:47:42 +09:00]] 版))
<http://apngs.com/>
[27] [CITE[Bug 43828 – Safari APNG support]]
( ([TIME[2014-09-18 04:50:01 +09:00]] 版))
<https://bugs.webkit.org/show_bug.cgi?id=43828>
[31] [CITE[Bug 17022 – Add APNG support]]
( ([TIME[2014-09-18 14:07:00 +09:00]] 版))
<https://bugs.webkit.org/show_bug.cgi?id=17022>
[32] [CITE[''''''[''''''webkit-efl'''''']'''''' APNG support?]]
( ([TIME[2014-08-13 15:39:18 +09:00]] 版))
<https://lists.webkit.org/pipermail/webkit-efl/2014-August/000628.html>
[33] [CITE[Let's consider APNG support once again. - Google グループ]]
( ([TIME[2014-09-18 14:20:33 +09:00]] 版))
<https://groups.google.com/a/chromium.org/forum/#!topic/chromium-dev/2xvXNJMsgxc>
[34] [CITE[Issue 1171 - chromium - Request for enhancement: APNG (animated PNG) - An open-source project to help move the web forward. - Google Project Hosting]]
( ([TIME[2014-09-18 14:21:20 +09:00]] 版))
<https://code.google.com/p/chromium/issues/detail?id=1171>
[35] [CITE@en[APNG - Opera Forums]]
( ([TIME[2014-09-18 14:22:56 +09:00]] 版))
<http://forums.opera.com/discussion/1833849/apng/p1>
[37] [CITE@en[1160200 – Add image/apng MIME type so it can be used with `picture` type switching.]]
([TIME[2015-08-08 11:53:05 +09:00]] 版)
<https://bugzilla.mozilla.org/show_bug.cgi?id=1160200>
[40] [CITE@en[1171 - Request for enhancement: APNG (animated PNG) - chromium - Monorail]]
([TIME[2016-12-04 11:11:01 +09:00]])
<https://bugs.chromium.org/p/chromium/issues/detail?id=1171>
[41] [CITE@en[437662 - Support for Animated PNG - chromium - Monorail]]
([TIME[2016-12-04 11:12:03 +09:00]])
<https://bugs.chromium.org/p/chromium/issues/detail?id=437662>
[42] [CITE[Issue 2386453003: WIP: Implement APNG - Code Review]]
([TIME[2016-12-04 11:16:45 +09:00]])
<https://codereview.chromium.org/2386453003/>
[43] [CITE[Issue 1567053002: Animated PNG implementation - Code Review]]
([TIME[2016-12-04 11:16:55 +09:00]])
<https://codereview.chromium.org/1567053002/>