GCP 转码器 API mov/mp4 到 hls/fmp4 没有音频输出在 IOS 上

问题描述

我使用具有以下配置的 GCP 转码器 API：

• NodeJS 12

• Firebase 存储

• Firestore 数据库

• GCP CDN

• 上传作业开始（firebase 函数）

    const config = {
      "elementaryStreams": [
        {
          "videoStream": {
            "codec": "h264","tune": 'zerolatency',"preset": 'superfast',"heightPixels": 360,"widthPixels": 640,"bitrateBps": 400000,"rateControlMode": "vbr","frameRate": 30,"crfLevel": 26,"gopMode": { "gopDuration": "1.0s",}
          },"key": "video-stream0"
        },{
          "videoStream": {
            "codec": "h264","heightPixels": 480,"widthPixels": 854,"bitrateBps": 1500000,"frameRate": 60,"key": "video-stream1"
        },"heightPixels": 720,"widthPixels": 1280,"bitrateBps": 3000000,"key": "video-stream2"
        },{
          "key": "audio-stream0","audioStream":  {
            "codec":  "aac","bitrateBps":  128000,"channelCount": 2,"channelLayout": ["fl","fr"],"sampleRateHertz": 48000,}
        }
      ],"muxStreams": [
        {
          "key": "video-only-sd","container": "fmp4","elementaryStreams": [ "video-stream0" ],"segmentSettings": { 
            "segmentDuration": { "seconds": "2.0s" },"individualSegments": true 
          },},{
          "key": "video-only-md","elementaryStreams": [ "video-stream1" ],{
          "key": "video-only-hd","elementaryStreams": [ "video-stream2" ],{
          "key": "audio-only","elementaryStreams": [ "audio-stream0" ],"individualSegments": true 
          }
        }
      ],"manifests": [
        {
          "fileName": "master.m3u8","type": "HLS","muxStreams": [
            "video-only-sd","video-only-md","video-only-hd","audio-only"
          ]
        }
      ],

输出摘录：

视频在各种播放器上运行都很棒，也适应了带宽，但在 iPhone 上没有声音。 可能原因：生成了音频文件，但与生成的视频文件数量不同。在大约 10 秒。视频，还有一个音频文件。

知道我忘记或忽略或错误定义或解释的内容吗？

解决方法

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