HTML <video loop> - Downloaded multiple times

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逝去的感伤
逝去的感伤 2021-02-15 10:41

I\'m trying to set up a video as a background in a page. The thing is that i have a and triggers 1 download for the video, then when it finishes y start playing the video again

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  • 2021-02-15 10:53

    I've had the same problem and searched the internet for a solution. I know this is a 3 year old post, but it might help people who run into this issue. In my case we had a +- 24mb .mp4 file in loop, chrome redownloaded the video on every loop. I compressed the video a bit and converted the video to a .webm. The file size was reduced to 4.5mb and the problem disappeared.

    Edit : It seems like it has something to do with the file size. The problem also does not occur with a 4.5mb .mp4.

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  • 2021-02-15 11:04

    The only way to get around this issue is to load the file in local Storage or something. Example Above

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  • 2021-02-15 11:15
     <style type="text/css">
    body { background: url(demo.jpg) center; 
    background-size: 300%;
    width:100%;
    height:150px;}
    video { display: block; }
    video#bgvid {
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -100000;
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    
    }
    @media screen and (max-device-width: 800px) {
    body { background: url(demo.jpg) #000 no-repeat center center fixed; }
    #bgvid { display: none; }
    }
    </style>
    <script type="text/javascript">
    //if it is not already in local storage
    if (localStorage.getItem("demo") === null){
     //make request for file
    var oReq = new XMLHttpRequest();
    oReq.open("POST", "http://LINK_TO_demo.mp4", true);
     // arraybuffer needed for binary file 
    oReq.responseType = "arraybuffer";
     // once loaded 
    oReq.onload = function(oEvent) {
     // Convert to Blob Object
    var blob = new Blob([oReq.response], {type: "video/mp4"});
    var reader = new FileReader();
    reader.readAsDataURL(blob);
    reader.onload = function(e) {
    var dataURL = reader.result;
    localStorage.setItem("demo", dataURL);
    // reload or add document ready function.
    location.reload();
    }
    oReq.send();}} 
    var videlem = document.createElement("video");
    videlem.autoplay = true;
    videlem.loop = true;
    videlem.poster = "demo.jpg";
    videlem.id = "bgvid";
    var sourceMP4 = document.createElement("source"); 
    sourceMP4.type = "video/mp4";
    sourceMP4.src = localStorage.getItem("demo");
    sourceMP4.autoPlay = true;
    videlem.appendChild(sourceMP4);
    document.body.appendChild(videlem);    
    </script>
    

    This will make it play faster and stores the video in local Storage so there no more request made to the server.

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