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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script type="text/javascript" src="https://unpkg.com/mediainfo.js/dist/mediainfo.min.js"></script>
<style>
html, body{
margin:0;
padding:0;
}
body * {
box-sizing: border-box;
}
#wrapper {
display: flex;
flex-direction: column;
height: 100%;
padding: 8px;
position: absolute;
width: 100%;
}
#fileinput {
padding-bottom: 8px;
}
#output {
height: 100%;
}
</style>
</head>
<body>
<div id="wrapper">
<input type="file" id="fileinput" name="fileinput" />
<textarea id="output"></textarea>
</div>
<script>
const fileinput = document.getElementById('fileinput')
const output = document.getElementById('output')
const onChangeFile = (e, mediainfo) => {
const file = fileinput.files[0]
if (file) {
output.value = 'Working…'
const getSize = () => file.size
const readChunk = (chunkSize, offset) =>{
return new Promise((resolve, reject) => {
const reader = new FileReader()
reader.onload = (event) => {
if (event.target.error) {
reject(event.target.error)
}
resolve(new Uint8Array(event.target.result))
}
reader.readAsArrayBuffer(file.slice(offset, offset + chunkSize))
})
}
mediainfo
.analyzeData(getSize, readChunk)
.then((result) => {
output.value = result
})
.catch((error) => {
output.value = `An error occured:\n${error.stack}`
})
}
}
MediaInfo({
format: 'object',
locateFile: (path, prefix) => prefix + path,
}, (mediainfo) => {
fileinput.addEventListener('change', (e) => onChangeFile(e, mediainfo))
})
</script>
</body>
</html>
|
