如何在html视频标签中播放mp4视频，其中视频通过multer上传

I have to play video in my website. The video is uploaded via multer with node.js and in express framework.The file is inserting to the database and the specified folder(file name like 1b47c24b20cc2465fbcb395fd1a9dfb4). I am uploading image also and its showing properly But video is not playing.I have to play video in my website. The video i