视频流返回前端无法播放

[liyang9331]

ctx.set('content-type', 'video/mp4');//设置返回类型
let stream = fs.createReadStream('./assets/test.mp4');
if (stream) {//判断状态
stream.on('open', function () {
console.log('文件打开')
});
stream.on('end', function () {
console.log("读取完毕")
})
stream.on('data', function (data) {
// console.log("读取文件流")
ctx.body = data
})
stream.on('err', function () {
console.log("发生错误")
})
stream.on('close', function () {
console.log('关闭')
// ctx.end
});
}

[whatwewant]

only => ctx.body = stream