Converting an audio file into base64 format using Ionic 3

Question

Converting an audio file into base64 format using Ionic 3

I'm currently working on a project in Ionic 3 where I need to record audio and send it to the server.

record(){
  if (this.platform.is('ios')) {
    this.fileName = 'record'+new Date().getDate()+new Date().getMonth()+new 
    Date().getFullYear()+new Date().getHours()+new Date().getMinutes()+new 
    Date().getSeconds()+'.3gp';
    this.filePath = this.file.documentsDirectory.replace(/file:\/\//g, '') + 
    this.fileName;
    this.audio = this.media.create(this.filePath);
  } else if (this.platform.is('android')) {
    this.fileName = 'record'+new Date().getDate()+new Date().getMonth()+new 
    Date().getFullYear()+new Date().getHours()+new Date().getMinutes()+new 
    Date().getSeconds()+'.3gp';
    this.filePath = this.file.externalDataDirectory.replace(/file:\/\//g, '') 
    + this.fileName;
    this.audio = this.media.create(this.filePath);
  }
    this.audio.startRecord();
    this.recording = true;
}

Once the recording is done, my next step is to convert the audio file to base64 and send it to the server. For this conversion, I am utilizing the base64 plugin.

this.base64.encodeFile(this.filePath).then((base64File: string) => {
            // let audiooo = encodeURIComponent(base64File);
            this.sendVoice(encodeURIComponent(base64File));
        }, (err) => {
          console.log(err);
        });

However, when trying to encode the file, I encounter an issue. The encoded value starts with data%3Aimage..., instead of data%3Aaudio... which prevents me from playing the audio after sending it to the server.

data%3Aimage%2F%3Bcharset%3Dutf-8%3Bbase64%2C%2f%2FFsQBIF%2FAFAC....

Do you have any insights on what might be causing this problem?

angular typescript ionic-framework ionic3

Answer 1

Answer №1

Feel free to use my solution provided in this discussion thread. It comes from an authoritative source. Click here for more details.

To integrate the plugin into your project, follow these steps:

Run the command:

ionic cordova plugin add com-badrit-base64

to install the plugin.

Execute:npm install @ionic-native/base64 to include the module in your project and package.json file.
In your module.ts, import the library as follows:
```
import { Base64 } from "@ionic-native/base64";
```

Add it to the providers list in your JSON configuration.

providers:[
      Camera,
      Media,
      File,
      SpeechRecognition,
      Base64,
],

Declare the new library in the constructor of your component:private base64:Base64,

Utilize the method below to achieve the desired functionality.

this.base64.encodeFile(this.filePath + this.fileName).then(
(base64:any) =>{
  console.log('file base64 encoding: ' + base64);
  var x = base64.substr(13,base64.length);
  x = "data:audio/mpeg;base64" + x;
});

Answer 2

Feel free to use my solution provided in this discussion thread. It comes from an authoritative source. Click here for more details.

To integrate the plugin into your project, follow these steps:

Run the command:

ionic cordova plugin add com-badrit-base64

to install the plugin.

Execute:npm install @ionic-native/base64 to include the module in your project and package.json file.
In your module.ts, import the library as follows:
```
import { Base64 } from "@ionic-native/base64";
```

Add it to the providers list in your JSON configuration.

providers:[
      Camera,
      Media,
      File,
      SpeechRecognition,
      Base64,
],

Declare the new library in the constructor of your component:private base64:Base64,

Utilize the method below to achieve the desired functionality.

this.base64.encodeFile(this.filePath + this.fileName).then(
(base64:any) =>{
  console.log('file base64 encoding: ' + base64);
  var x = base64.substr(13,base64.length);
  x = "data:audio/mpeg;base64" + x;
});

Answer 3

Answer №2

After encountering issues with the basic native base64 encoding, I found an alternative solution that worked perfectly!

Here is the solution:

I came across this fantastic library that I had used in the past for converting audio to base64 format:
//Encoding Audio MP3 to Base64 var pathToFile = "/pathToFile/audio.mp3";

Base64ToAudio.readAudio(pathToFile, 
    function(sourceAudio)
    {
        console.log(sourceAudio) //Returns Base64 String
    },
    function(error)
    {
        console.log(error);
    }
);

//Decoding Audio MP3 from Base64 and saving the file onto storage.
var conf = { "b64string": sourceAudio, "filename": "new-voice.mp3", "folder": "/pathToDirectory/", "overwrite": true };

Base64ToAudio.saveAudio(conf,
    function(success){
        console.log(success); //Returns 'OK' when the file is successfully generated.
    },
    function(error){
        console.log(error);
    }
);

Answer 4

After encountering issues with the basic native base64 encoding, I found an alternative solution that worked perfectly!

Here is the solution:

I came across this fantastic library that I had used in the past for converting audio to base64 format:
//Encoding Audio MP3 to Base64 var pathToFile = "/pathToFile/audio.mp3";

Base64ToAudio.readAudio(pathToFile, 
    function(sourceAudio)
    {
        console.log(sourceAudio) //Returns Base64 String
    },
    function(error)
    {
        console.log(error);
    }
);

//Decoding Audio MP3 from Base64 and saving the file onto storage.
var conf = { "b64string": sourceAudio, "filename": "new-voice.mp3", "folder": "/pathToDirectory/", "overwrite": true };

Base64ToAudio.saveAudio(conf,
    function(success){
        console.log(success); //Returns 'OK' when the file is successfully generated.
    },
    function(error){
        console.log(error);
    }
);

Answer 5

Answer №3

To accomplish this task, you can utilize the FileReader.readAsDataURL() method:

const fileReader = new FileReader();
fileReader.readAsDataURL(file);
fileReader.onload = () => {
  const base64String = fileReader.result // This is your base64 data.
}

Answer 6

To accomplish this task, you can utilize the FileReader.readAsDataURL() method:

const fileReader = new FileReader();
fileReader.readAsDataURL(file);
fileReader.onload = () => {
  const base64String = fileReader.result // This is your base64 data.
}

Converting an audio file into base64 format using Ionic 3

Answer №1

Answer №2

Answer №3

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