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Download a recording

In this code snippet you see how to download a recording.

Example

Replace the following variables in the example code:

Key Description
RECORDING_URL The URL of the recording to download. You typically get this from the JSON response received on the /webhooks/recordings endpoint when the record action is used.

Prerequisites

Use your existing application

To fetch a recording you must use the same NEXMO_APPLICATION_ID and private key for the application that owns the call that you're trying to download.

Generate your JWT

Execute the following command at your terminal prompt to create the JWT for authentication:

export JWT=$(nexmo jwt:generate $PATH_TO_PRIVATE_KEY application_id=$NEXMO_APPLICATION_ID)

Write the code

Add the following to download-a-recording.sh:

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curl $RECORDING_URL \
  -H "Authorization: Bearer "$JWT \
  --output recording.mp3

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Run your code

Save this file to your machine and run it:

bash download-a-recording.sh

Prerequisites

Use your existing application

To fetch a recording you must use the same NEXMO_APPLICATION_ID and private key for the application that owns the call that you're trying to download.

Install dependencies

npm install nexmo
Initialize your dependencies

Create a file named download-a-recording.js and add the following code:

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const Nexmo = require('nexmo');

const nexmo = new Nexmo({
  apiKey: NEXMO_API_KEY,
  apiSecret: NEXMO_API_SECRET,
  applicationId: NEXMO_APPLICATION_ID,
  privateKey: NEXMO_PRIVATE_KEY
}, {debug: true});

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Write the code

Add the following to download-a-recording.js:

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nexmo.files.save(RECORDING_URL, 'test.mp3', (err, res) => {
  if(err) { console.error(err); }
  else {
      console.log(res);
  }
});

View full source

Run your code

Save this file to your machine and run it:

node download-a-recording.js

Prerequisites

Use your existing application

To fetch a recording you must use the same NEXMO_APPLICATION_ID and private key for the application that owns the call that you're trying to download.

Install dependencies

Add the following to build.gradle:

compile 'com.nexmo:client:5.1.0'
Initialize your dependencies

Create a class named DownloadRecording and add the following code to the main method:

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NexmoClient client = NexmoClient.builder()
        .applicationId(NEXMO_APPLICATION_ID)
        .privateKeyPath(NEXMO_PRIVATE_KEY_PATH)
        .build();

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Write the code

Add the following to the main method of the DownloadRecording class:

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client.getVoiceClient().downloadRecording(RECORDING_URL).save("downloaded_recording.mp3");

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Run your code

We can use the application plugin for Gradle to simplify the running of our application. Update your build.gradle with the following:

apply plugin: 'application'
mainClassName = project.hasProperty('main') ? project.getProperty('main') : ''

Run the following gradle command to execute your application, replacing com.nexmo.quickstart.voice with the package containing DownloadRecording:

gradle run -Pmain=com.nexmo.quickstart.voice.DownloadRecording

Prerequisites

Use your existing application

To fetch a recording you must use the same NEXMO_APPLICATION_ID and private key for the application that owns the call that you're trying to download.

Install dependencies

composer require nexmo/client
Initialize your dependencies

Create a file named index.php and add the following code:

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$keypair = new \Nexmo\Client\Credentials\Keypair(
    file_get_contents(NEXMO_APPLICATION_PRIVATE_KEY_PATH),
    NEXMO_APPLICATION_ID
);

$client = new \Nexmo\Client($keypair);

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Write the code

Add the following to index.php:

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$recordingUrl = 'https://api.nexmo.com/v1/files/'.NEXMO_RECORDING_ID;
$data = $client->get($recordingUrl);
file_put_contents($recordingId.'.mp3', $data->getBody());

View full source

Run your code

Save this file to your machine and run it:

php index.php

Prerequisites

Use your existing application

To fetch a recording you must use the same NEXMO_APPLICATION_ID and private key for the application that owns the call that you're trying to download.

Install dependencies

pip install nexmo
Initialize your dependencies

Create a file named get-recording.py and add the following code:

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client = nexmo.Client(
    application_id=APPLICATION_ID,
    private_key=APPLICATION_PRIVATE_KEY_PATH,
)

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Write the code

Add the following to get-recording.py:

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response = client.get_recording(URL)
pprint(response)

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Run your code

Save this file to your machine and run it:

python3 get-recording.py > recording.mp3

Prerequisites

Use your existing application

To fetch a recording you must use the same NEXMO_APPLICATION_ID and private key for the application that owns the call that you're trying to download.

Install dependencies

gem install nexmo
Initialize your dependencies

Create a file named download-a-recording.rb and add the following code:

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client = Nexmo::Client.new(
  application_id: NEXMO_APPLICATION_ID,
  private_key: File.read(NEXMO_APPLICATION_PRIVATE_KEY_PATH)
)

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Write the code

Add the following to download-a-recording.rb:

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response = client.files.save(RECORDING_URL, 'recording.mp3')

puts response.inspect

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Run your code

Save this file to your machine and run it:

ruby download-a-recording.rb

Try it out

You will need a Recording URL from which to download the recording file. You typically get this from the JSON response received on the /webhooks/recordings endpoint when the record action is used when recording a call, connecting another call and so on. A typical JSON response will resemble the following:

{'conversation_uuid': 'CON-ddddaaaa-bbbb-cccc-dddd-0123456789de',
 'end_time': '2018-08-10T11:19:31Z',
 'recording_url': 'https://api.nexmo.com/v1/files/aaaaaaaa-bbbb-cccc-dddd-0123456789ab',
 'recording_uuid': 'ccccaaaa-dddd-cccc-dddd-0123456789ab',
 'size': 162558,
 'start_time': '2018-08-10T11:18:51Z',
 'timestamp': '2018-08-10T11:19:31.744Z'}
1.2.3.4 - - [10/Aug/2018 11:19:31] "POST /webhooks/recordings HTTP/1.1" 200 -

When you run the script, the recording located at the recording URL will be downloaded. You can then listen to the recording.