nodejs 推送图片到 RTMP 延时和花屏有什么办法优化

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实现思路

nodeJS 获取到图片的 base64 数据
通过 ffmpeg pipe 推送到 rtmp

代码实现

const child_process = require('child_process')
let child = child_process.spawn('ffmpeg', [
  '-f', 'image2pipe',
  '-i', '-',
  '-vcodec', 'libx264',
  '-f', 'flv',
  'rtmp://127.0.0.1:56413/live/test'
]);

child.stdout.on('data', function (data) {
  console.log(data.toString());
});

child.stderr.on('data', function (data) {
  console.log(data.toString());
});

child.on('close', (code, signal) => {
  console.log('ffmpeg 进程中断', code, signal);
});


// 图片数据写入管道
function writeImg (base64) {
  let imgData = Buffer.from(base64, 'base64')
  child.stdin.write(imgData)
}


// 模拟循环获取图片数据
for (let i = 0; i < 100; i ++) {
  writeImg('/9j/4AAQSkZJRgABAQAA........')
}