node.js+formidable

<form class="form form-signin" action="/videoUpload" method="post" enctype="multipart/form-data">
        
    <div class="video">
        <span>添加视频</span>
        <input type="file" name="videoUpload"  id="cVideo"  accept="video/*" />
        <p class="vBackg"></p>
    </div>

    <input type="submit" value="上传课程视频" class="btn btn-primary btn-block submit" />
</form>

html 

//引入formidable 需要require

    var form = new formidable.IncomingForm();
    var filePath = path.join(path.normalize(__dirname + '/..'), 'public', 'upload');
 /!*   form.uploadDir(filePath);*!/
    form.keepExtensions = true;
    form.maxFieldsSize = 1024 * 1024 * 1024; //1G

    form.parse(req, function (err, fields, files) {
     /!*   res.writeHead(200, {'content-type': 'text/plain'});
        res.write('上传成功~ \n\n');*!/
        res.send(util.inspect({fields: fields, files: files}));
        file = files;

    });

    form.on('error', function(err) {
        console.log(err);
        alert('上传失败'+err);
    });

    form.on('end', function() {
       fs.rename(oldPath,filePath+'/'+file.name+'.mp4', function () {

       });
    });

目录需要先创建好