{"id":1814,"date":"2017-08-21T17:19:55","date_gmt":"2017-08-21T09:19:55","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=1814"},"modified":"2017-08-21T17:31:09","modified_gmt":"2017-08-21T09:31:09","slug":"canvid-js-%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=1814","title":{"rendered":"canvid.js \u6559\u7a0b"},"content":{"rendered":"<p>\n\t\u5f88\u5c11\u6709\u4eba\u5173\u6ce8<a href=\"http:\/\/gka.github.io\/canvid\/\" name=\"canvid\" target=\"_blank\" title=\"canvid\">canvid.js<\/a>\uff0c\u5927\u90e8\u5206\u4eba\u53ef\u80fd\u8fd8\u6ca1\u53d1\u73b0\u8fd9\u4e2ajs\u7c7b\u5e93\u3002\u6211\u5c31\u53ea\u5728\u77e5\u4e4e\u4e0a\u770b\u5230\u6709\u4eba\u5173\u4e8e\u5b83\u7684\u8bc4\u8bba\u300a<a href=\"https:\/\/www.zhihu.com\/question\/37014091\/answer\/70028865\" name=\"\u5982\u4f55\u8bc4\u4ef7canvid.js\uff1f\" target=\"_blank\" title=\"\u5982\u4f55\u8bc4\u4ef7canvid.js\uff1f\">\u5982\u4f55\u8bc4\u4ef7canvid.js\uff1f<\/a>\u300b\u3002\n<\/p>\n<p>\n\t<img decoding=\"async\" alt=\"canvid.js\" src=\"http:\/\/img.bbs.csdn.net\/upload\/201708\/21\/1503304651_210201.png\" style=\"width: 522px;height: 288px\" \/>\n<\/p>\n<h2>\n\tcanvid.js\u662f\u4ec0\u4e48<br \/>\n<\/h2>\n<p>\n\tcanvid.js\u662f\u4e00\u6b3e\u7528\u4e8e\u5728\u753b\u5e03\u5143\u7d20\u4e0a\u64ad\u653e\u89c6\u9891\u7684\u5c0f\u63d2\u4ef6\u3002canvid\u662f\u4e00\u4e2a\u5f00\u6e90\u5e93\uff0c\u7528\u4e8e\u64ad\u653e\u753b\u5e03\u5143\u7d20\u4e0a\u76f8\u5bf9\u8f83\u77ed\u7684\u89c6\u9891\u3002\n<\/p>\n<h2>\n\tcanvid.js\u7684\u7279\u70b9<br \/>\n<\/h2>\n<ul>\n<li>\n\t\t\u548cHTML5\u76f8\u6bd4\uff0c\u5b83\u53ef\u4ee5\u5728iOS\u4e0a\u5d4c\u5165\u548c\u81ea\u52a8\u64ad\u653eHTML5\u89c6\u9891\u3002\n\t<\/li>\n<li>\n\t\tJPG\u5728\u538b\u7f29\u89c6\u9891\u5e27\u65b9\u9762\u505a\u5f97\u66f4\u597d\u3002\u52a8\u753bGIF\u4e0d\u4f1a\u7ed9\u60a8\u4efb\u4f55\u64ad\u653e\u63a7\u5236\u3002\u60a8\u65e0\u6cd5\u6682\u505cGIF\u6216\u5ef6\u8fdf\u64ad\u653e\u3002\u7528canvid\u4f60\u53ef\u4ee5\u505a\u5230\u8fd9\u4e00\u70b9\u3002\n\t<\/li>\n<li>\n\t\tcanvid\u6bd4\u8f83\u9002\u5408\u5c0f\u89c6\u9891\uff0c\u539f\u56e0\u662fiOS\u9650\u5236\u4e86\u6700\u5927\u56fe\u50cf\u5927\u5c0f\u3002\n\t<\/li>\n<li>\n\t\t\u52a8\u753bGIF\u4e0d\u652f\u6301\u97f3\u9891\uff0ccanvid\u4e5f\u4e0d\u652f\u6301\u97f3\u9891\u3002\n\t<\/li>\n<li>\n\t\t\u76f8\u540c\u5185\u5bb9\uff0c\u6bd4GIF\u5c0f\u3002\n\t<\/li>\n<\/ul>\n<p>\n\t\u4f7f\u7528\u4e0b\u9762\u7684\u547d\u4ee4\u521b\u5efaGIF\uff1a\n<\/p>\n<pre class=\"brush:bash;\">\r\nffmpeg -i myvideo.mp4 -vf scale=375:-1 -r 5 frames\/%04d.png\r\nconvert -loop 0 -delay 5 -colors 75 frames\/*.png -fuzz &quot;40%&quot; output.gif<\/pre>\n<h2>\n\tcanvid\u5b89\u88c5<br \/>\n<\/h2>\n<p>\n\tNPM\u65b9\u5f0f\n<\/p>\n<pre class=\"brush:bash;\">\r\nnpm install --save canvid<\/pre>\n<p>\n\tgit clone\u65b9\u5f0f\n<\/p>\n<pre class=\"brush:bash;\">\r\ngit clone git@github.com:gka\/canvid.git<\/pre>\n<h2>\n\t\u7528\u6cd5<br \/>\n<\/h2>\n<p>\n\t\u60a8\u53ef\u4ee5\u4f7f\u7528canvid.js\u4e0eAMD\uff0cCommonJS\u548c\u6d4f\u89c8\u5668\u5168\u5c40\u53d8\u91cf\u3002\n<\/p>\n<pre class=\"brush:jscript;\">\r\nvar canvidControl = canvid({\r\n    selector : &#039;.video&#039;,\r\n    videos: {\r\n        clip1: { src: &#039;clip1.jpg&#039;, frames: 38, cols: 6, loops: 1, onEnd: function(){\r\n          console.log(&#039;clip1 ended.&#039;);\r\n          canvidControl.play(&#039;clip2&#039;);\r\n        }},\r\n        clip2: { src: &#039;clip2.jpg&#039;, frames: 43, cols: 6, fps: 24 }\r\n    },\r\n    width: 500,\r\n    height: 400,\r\n    loaded: function() {\r\n        canvidControl.play(&#039;clip1&#039;);\r\n        \/\/ reverse playback\r\n        \/\/ canvidControl.play(&#039;clip1&#039;, true);\r\n    }\r\n});<\/pre>\n<p>\n\t\u5982\u679c\u4f60\u60f3\u7528<a href=\"https:\/\/facebook.github.io\/react\/\" name=\"react\" target=\"_blank\" title=\"react\">React<\/a>\u4f7f\u7528canvid\uff0c\u4f60\u53ef\u4ee5\u68c0\u67e5\u8fd9\u4e2a\u7b80\u5355\u7684<a href=\"http:\/\/codepen.io\/moklick\/pen\/eJgbaL\" name=\"react + canvid demo\" target=\"_blank\" title=\"react + canvid demo\">react + canvid demo<\/a>\u770b\u770b\u5b83\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u3002\n<\/p>\n<h2>\n\t\u53c2\u6570\u8bf4\u660e<br \/>\n<\/h2>\n<ul>\n<li>\n\t\tvideos\uff1aVideo \/ Sprite\u5bf9\u8c61\uff08videoKey\uff1avideoOptions\uff09\u3002\n\t<\/li>\n<li>\n\t\tselector\uff1a\u53ef\u9009\uff08\u9ed8\u8ba4\u503c\uff1a&#039;.canvid-wrapper&#039;\uff09 \uff0c\u663e\u793a\u89c6\u9891\u7684\u5143\u7d20\u7684\u9009\u62e9\u5668\u3002\n\t<\/li>\n<li>\n\t\twidth\uff1a\u53ef\u9009\uff08\u9ed8\u8ba4\u503c\uff1a800\uff09 \uff0c\u89c6\u9891\u663e\u793a\u7684\u5143\u7d20\u7684\u5bbd\u5ea6\u3002\n\t<\/li>\n<li>\n\t\theight\uff1a\u53ef\u9009\uff08\u9ed8\u8ba4\u503c\uff1a450\uff09\uff0c\u89c6\u9891\u663e\u793a\u5143\u7d20\u7684\u9ad8\u5ea6\u3002\n\t<\/li>\n<li>\n\t\tloaded\uff1a\u53ef\u9009\uff0c\u5728\u52a0\u8f7d\u6240\u6709\u89c6\u9891\u65f6\u8c03\u7528\u3002\n\t<\/li>\n<li>\n\t\tsrcGif\uff1a\u8def\u5f84\u7684\u540e\u5907GIF\uff0c\u5982\u679c\u4e0d\u652f\u6301canvas\u3002\n\t<\/li>\n<\/ul>\n<p>\n\tvideos \u5bf9\u8c61\u7684\u5c5e\u6027\u8bf4\u660e\u5982\u4e0b\uff1a\n<\/p>\n<ul>\n<li>\n\t\tsrc\uff1a\u5fc5\u9700\uff0csprite\u56fe\u50cf\u7684\u8def\u5f84\u3002\n\t<\/li>\n<li>\n\t\tframes\uff1a\u5fc5\u987b\uff0c\u5e27\u6570\u3002\n\t<\/li>\n<li>\n\t\tcols\uff1a\u5fc5\u987b\uff0c\u5217\u6570\u3002\n\t<\/li>\n<li>\n\t\tloops\uff1a\u53ef\u9009 \u5faa\u73af\u64ad\u653e\u6b21\u6570\u3002\n\t<\/li>\n<li>\n\t\tfps\uff1a\u53ef\u9009\uff08\u9ed8\u8ba4\u503c\uff1a15\uff09 \uff0c\u6bcf\u79d2\u5e27\u6570\u3002\n\t<\/li>\n<li>\n\t\tonEnd\u53ef\u9009\uff0c\u5f53\u526a\u8f91\u7ed3\u675f\u65f6\u88ab\u8c03\u7528\u3002\n\t<\/li>\n<\/ul>\n<h2>\n\t\u65b9\u6cd5\u8bf4\u660e<br \/>\n<\/h2>\n<p>\n\tCanvid\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u6765\u63a7\u5236\u89c6\u9891\uff1a\n<\/p>\n<pre class=\"brush:jscript;\">\r\nvar canvidControl = canvid(canvidOptions);<\/pre>\n<p>\n\t\u64ad\u653e\u901a\u8fc7\u7684\u89c6\u9891\u7684\u89c6\u9891\u3002\u53c2\u6570isReverse\uff08\u9ed8\u8ba4\u503c\uff1afalse\uff09\u548cfps\uff08\u9ed8\u8ba4\u503c\uff1a15\uff09\u662f\u53ef\u9009\u7684\u3002\n<\/p>\n<pre class=\"brush:jscript;\">\r\ncanvidControl.play(videoKey [,isReverse, fps]);<\/pre>\n<p>\n\t\u6682\u505c\u5f53\u524d\u200b\u200b\u89c6\u9891\u3002\n<\/p>\n<pre class=\"brush:jscript;\">\r\ncanvidControl.pause();<\/pre>\n<p>\n\t\u6062\u590d\u5f53\u524d\u89c6\u9891\u3002\n<\/p>\n<pre class=\"brush:jscript;\">\r\ncanvidControl.resume();<\/pre>\n<p>\n\t\u505c\u6b62\u89c6\u9891\u5e76\u4eceDOM\u4e2d\u79fb\u9664\u5f53\u524dcanvid\u5143\u7d20\u7684\u753b\u5e03\u3002\n<\/p>\n<pre class=\"brush:jscript;\">\r\ncanvidControl.destroy();<\/pre>\n<p>\n\t\u8fd4\u56de\u89c6\u9891\u64ad\u653e\u8fd8\u662f\u6682\u505c\u72b6\u6001\uff0ctrue\u6216false\u3002\n<\/p>\n<pre class=\"brush:jscript;\">\r\ncanvidControl.isPlaying();<\/pre>\n<p>\n\t\u8fd4\u56de\u5f53\u524d\u5e27\u53f7\u3002\n<\/p>\n<pre class=\"brush:jscript;\">\r\ncanvidControl.getCurrentFrame();<\/pre>\n<p>\n\t\u8bbe\u7f6e\u5f53\u524d\u5e27\u53f7\u3002\n<\/p>\n<pre class=\"brush:jscript;\">\r\ncanvidControl.setCurrentFrame(0);<\/pre>\n<p>\n\t\u5982\u4f55\u5c06\u89c6\u9891\u8f6c\u6362\u4e3aJPG\n<\/p>\n<p>\n\t\u4f7f\u7528<a href=\"https:\/\/www.ffmpeg.org\/\" name=\"ffmpeg\" target=\"_blank\" title=\"ffmpeg\">ffmpeg<\/a>\u5c06\u89c6\u9891\u8f6c\u6362\u4e3a\u5355\u4e2a\u5e27\uff1a\n<\/p>\n<pre class=\"brush:bash;\">\r\nffmpeg -i myvideo.mp4 -vf scale=375:-1 -r 5 frames\/%04d.png<\/pre>\n<p>\n\t\u7136\u540e\uff0c\u4f7f\u7528ImageMagicks\u5c06\u6240\u6709\u7684\u6846\u67b6\u53d8\u6210\u4e00\u4e2a\u5927\u56fe\u50cf\uff1a\n<\/p>\n<pre class=\"brush:bash;\">\r\nmontage -border 0 -geometry 375x -tile 6x -quality 60% frames\/*.png myvideo.jpg<\/pre>\n<p>\n\t\u6ce8\u610f\uff1acanvid\u662f\u4f9d\u8d56Canvas\u7684\u3002\n<\/p>\n<p>\n\t\u53c2\u8003\u8d44\u6599\n<\/p>\n<ul>\n<li>\n\t\t<a href=\"http:\/\/www.ndislwf.com\/2017\/08\/21\/ffmpeg-gif\/\" name=\"\u4f7f\u7528FFmpeg\u751f\u6210gif\u52a8\u753b\" target=\"_blank\" title=\"\u4f7f\u7528FFmpeg\u751f\u6210gif\u52a8\u753b\">\u4f7f\u7528FFmpeg\u751f\u6210gif\u52a8\u753b<\/a>\n\t<\/li>\n<li>\n\t\t<a href=\"http:\/\/gka.github.io\/canvid\/\" name=\"canvid.js\" target=\"_blank\" title=\"canvid.js\">http:\/\/gka.github.io\/canvid\/<\/a>\n\t<\/li>\n<\/ul>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=1814\">canvid.js \u6559\u7a0b<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u5f88\u5c11\u6709\u4eba\u5173\u6ce8canvid.js\uff0c\u5927\u90e8\u5206\u4eba\u53ef\u80fd\u8fd8\u6ca1\u53d1\u73b0\u8fd9\u4e2ajs\u7c7b\u5e93\u3002\u6211\u5c31\u53ea\u5728\u77e5\u4e4e\u4e0a\u770b\u5230\u6709\u4eba\u5173\u4e8e\u5b83\u7684\u8bc4\u8bba\u300a\u5982\u4f55\u8bc4\u4ef7 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[31,1443,151],"class_list":["post-1814","post","type-post","status-publish","format-standard","hentry","category-html5","tag-canvas","tag-canvid","tag-gif"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1814","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1814"}],"version-history":[{"count":2,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1814\/revisions"}],"predecessor-version":[{"id":1816,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1814\/revisions\/1816"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1814"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1814"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}