怎么看公司网站做的好不好哦,美丽乡村建设网站模板,网站建设什么意思,创意设计活动是指什么内容这篇文章主要介绍了jsHTML5基于过滤器从摄像头中捕获视频的方法,涉及javascript基于html5元素操作多媒体的使用技巧,需要的朋友可以参考下本文实例讲述了jsHTML5基于过滤器从摄像头中捕获视频的方法。分享给大家供大家参考。具体如下#xff1a;index.html页面#xff1a;Nat…这篇文章主要介绍了jsHTML5基于过滤器从摄像头中捕获视频的方法,涉及javascript基于html5元素操作多媒体的使用技巧,需要的朋友可以参考下本文实例讲述了jsHTML5基于过滤器从摄像头中捕获视频的方法。分享给大家供大家参考。具体如下index.html页面Native web camera streaming (getUserMedia) is not supported in this browser.Current filter is: NoneClick here to change video filterHTML5 objectHTML5 objectstyle.css文件.grayscale{-webkit-filter:grayscale(1);-moz-filter:grayscale(1);-o-filter:grayscale(1);-ms-filter:grayscale(1);filter:grayscale(1);}.sepia{-webkit-filter:sepia(0.8);-moz-filter:sepia(0.8);-o-filter:sepia(0.8);-ms-filter:sepia(0.8);filter:sepia(0.8);}.blur{-webkit-filter:blur(3px);-moz-filter:blur(3px);-o-filter:blur(3px);-ms-filter:blur(3px);filter:blur(3px);}.brightness{-webkit-filter:brightness(0.3);-moz-filter:brightness(0.3);-o-filter:brightness(0.3);-ms-filter:brightness(0.3);filter:brightness(0.3);}.contrast{-webkit-filter:contrast(0.5);-moz-filter:contrast(0.5);-o-filter:contrast(0.5);-ms-filter:contrast(0.5);filter:contrast(0.5);}.hue-rotate{-webkit-filter:hue-rotate(90deg);-moz-filter:hue-rotate(90deg);-o-filter:hue-rotate(90deg);-ms-filter:hue-rotate(90deg);filter:hue-rotate(90deg);}.hue-rotate2{-webkit-filter:hue-rotate(180deg);-moz-filter:hue-rotate(180deg);-o-filter:hue-rotate(180deg);-ms-filter:hue-rotate(180deg);filter:hue-rotate(180deg);}.hue-rotate3{-webkit-filter:hue-rotate(270deg);-moz-filter:hue-rotate(270deg);-o-filter:hue-rotate(270deg);-ms-filter:hue-rotate(270deg);filter:hue-rotate(270deg);}.saturate{-webkit-filter:saturate(10);-moz-filter:saturate(10);-o-filter:saturate(10);-ms-filter:saturate(10);filter:saturate(10);}.invert{-webkit-filter:invert(1);-moz-filter:invert(1);-o-filter: invert(1);-ms-filter: invert(1);filter: invert(1);}script.js 文件// Main initializationdocument.addEventListener(DOMContentLoaded, function() {// Global variablesvar video document.querySelector(video);var audio, audioType;var canvas document.querySelector(canvas);var context canvas.getContext(2d);// Custom video filtersvar iFilter 0;var filters [grayscale,sepia,blur,brightness,contrast,hue-rotate,hue-rotate2,hue-rotate3,saturate,invert,none];// Get the video stream from the camera with getUserMedianavigator.getUserMedia navigator.getUserMedia || navigator.webkitGetUserMedia ||navigator.mozGetUserMedia || navigator.msGetUserMedia;window.URL window.URL || window.webkitURL || window.mozURL || window.msURL;if (navigator.getUserMedia) {// Evoke getUserMedia functionnavigator.getUserMedia({video: true, audio: true}, onSuccessCallback, onErrorCallback);function onSuccessCallback(stream) {// Use the stream from the camera as the source of the video elementvideo.src window.URL.createObjectURL(stream) || stream;// Autoplayvideo.play();// HTML5 Audioaudio new Audio();audioType getAudioType(audio);if (audioType) {audio.src polaroid. audioType;audio.play();}}// Display an errorfunction onErrorCallback(e) {var expl An error occurred: [Reason: e.code ];console.error(expl);alert(expl);return;}} else {document.querySelector(.container).style.visibility hidden;document.querySelector(.warning).style.visibility visible;return;}// Draw the video stream at the canvas objectfunction drawVideoAtCanvas(obj, context) {window.setInterval(function() {context.drawImage(obj, 0, 0);}, 60);}// The canPlayType() function doesnt return true or false. In recognition of how complex// formats are, the function returns a string: probably, maybe or an empty string.function getAudioType(element) {if (element.canPlayType) {if (element.canPlayType(audio/mp4; codecsmp4a.40.5) ! ) {return(aac);} else if (element.canPlayType(audio/ogg; codecsvorbis) ! ) {return(ogg);}}return false;}// Add event listener for our videos Play function in order to produce video at the canvasvideo.addEventListener(play, function() {drawVideoAtCanvas(this, context);}, false);// Add event listener for our Button (to switch video filters)document.querySelector(button).addEventListener(click, function() {video.className ;canvas.className ;var effect filters[iFilter % filters.length]; // Loop through the filters.if (effect) {video.classList.add(effect);canvas.classList.add(effect);document.querySelector(.container h3).innerHTML Current filter is: effect;}}, false);}, false);以上就是本文的全部内容希望对大家的学习有所帮助更多相关内容请关注PHP中文网相关推荐
