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Whisper API | Convert Audio and Video Into Text Transcripts

OpenAI's Whisper API unlocks automatic speech recognition (ASR) through the cloud, allowing businesses to leverage this powerful tool to convert audio/video files into text transcripts with high accuracy, even in noisy environments.

@apidog

@apidog

Updated on November 5, 2024

The ever-expanding realm of artificial intelligence continues to revolutionize numerous industries, and OpenAI's Whisper API is a prime example within the field of automatic speech recognition (ASR).

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OpenAI's Whisper API is extremely accurate and useful for content creators who wish to automate subtitle creation for their videos. However, if you wish to be an app developer whose software provides the Whisper API functionality, you will certainly need an API tool to aid you in the process.

Strongly consider using Apidog, a comprehensive API development platform that allows you to observe, modify, and design APIs. If you wish to learn more about Apidog, make sure to click the button below.
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This cloud-based service empowers users with the ability to seamlessly convert audio or video files into comprehensive text transcripts, boasting exceptional accuracy even in less-than-ideal listening conditions characterized by background noise or multiple speakers.

What is Whisper API?

whisper api website

The OpenAI Whisper API is a cloud-based service that utilizes machine learning to convert audio or video files into text transcripts, falling under the Automatic Speech Recognition (ASR) category.

Whisper API's Key Features

Automatic Speech Recognition (ASR)

This core feature lies at the heart of Whisper's capabilities. It allows users to transcribe spoken language from audio or video files into text format. Whisper excels in this domain, achieving high accuracy even with challenging audio containing background noise, accents, or technical jargon.

Multilingual Support

Whisper isn't limited to just English. It boasts support for a wide range of languages, making it ideal for global applications. Users can transcribe audio in their native language or translate speech to English for broader accessibility.

Transcription Modes

The API offers two primary transcription modes – Transcription and Translation. Transcription mode delivers the spoken content in the original language it was recorded in, while Translation mode converts the speech to English text. This flexibility caters to diverse use cases.

Scalability and Efficiency

The cloud-based infrastructure of the Whisper API enables efficient processing of large audio/video files. This makes it a valuable tool for businesses dealing with significant volumes of speech data, such as call centers or media companies.

Optional Diarization (Speaker Identification)

For recordings with multiple speakers, Whisper offers optional diarization functionality. This feature separates the speech of each speaker into distinct transcripts, allowing for easier identification and analysis of individual contributions within a conversation.

Ease of Integration

The API employs a RESTful interface, a widely adopted standard for communication between applications. This simplifies integration for developers, enabling them to incorporate speech-to-text functionalities seamlessly into their projects.

Security and Privacy

While specific details may vary, OpenAI prioritizes user privacy and data security. Developers can expect secure access to the API and responsible handling of uploaded audio/video files.

In summary, the Whisper API offers a comprehensive suite of features for automatic speech recognition, catering to diverse needs. With its high accuracy, multilingual support, scalability, and optional functionalities like diarization, Whisper empowers developers and businesses to unlock the potential of speech data and streamline workflows.

Whisper API Pricing

OpenAI has made the Whisper AI to be paid, at a rate of $0.006 per minute. This means that it is not free for use.

Step-by-step Guide On Using Whisper API With Apidog

This section showcases a simple guide on how you can start utilizing the Whisper API to convert speech into text. However, before advancing further, make sure you know how to obtain the OpenAI API Key, as it is required to implement the Whisper API.

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Step 1 - Decide on Which Endpoint to Use

whsiper api transcription

The Whisper API is integrated with other functionalities, such as creating speech from text, converting speech into text, and providing audio translation into English. This article will showcase Whisper API's main strength, which is converting audio files into text transcripts.

Step 2 - Download and Setup API request on Apidog

We will now use Apidog, an API tool, to view the text transcript produced by the Whisper API. Apidog provides developers with a simple and intuitive user interface for working with APIs - it cannot get easier and more enjoyable than this!

apidog interface
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You can immediately copy the cURL code provided by OpenAI, and import it into Apidog.

apidog import curl code

Start by clicking the + button, and click the "Import cURL" button, as shown in the image above.

apidog import whisper api curl code

Next, copy and paste the cURL code for text transcription provided by OpenAI. If you cannot find it on the website, here is the same code:

curl https://api.openai.com/v1/audio/translations \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: multipart/form-data" \
  -F file="@/path/to/file/german.m4a" \
  -F model="whisper-1"
apidog change method to post

You should now have a new API request in front of your screen. Proceed by changing the method from GET to POST. If you have the file that you want to replace in a different place, you can also modify the file row to the correct file path withinyour device.

apidog insert bearer token

Proceed by pressing the Headers section, and scroll down to Authorization. On this row, replace the $OPENAI_API_KEY with your OpenAI API Key.

Once you have finalized everything, you can click send. If done correctly, Apidog should produce a response such as:

{
  "text": "Hello, my name is Wolfgang and I come from Germany. Where are you heading today?"
}
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As OpenAI is a very powerful AI platform, you can view a library's worth of APIs with API Hub.

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This also includes OpenAI's most-wanted APIs. Using the Apidog platform enables you to try out some of the OpenAI's APIs for free, so that you do not have to spend money just to try out their functionalities.

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Conclusion

OpenAI's Whisper API signifies a significant advancement in the field of automatic speech recognition. Its ability to deliver high-fidelity transcripts with exceptional accuracy, even in challenging situations, opens doors to a multitude of applications. From transcribing lectures and meetings to enhancing accessibility for multimedia content, Whisper's potential to streamline workflows and improve efficiency is undeniable.

As the technology continues to evolve and become more widely adopted, we can expect even more innovative use cases to emerge, further solidifying Whisper's position as a powerful tool for leveraging the valuable insights embedded within speech data.

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