OpenAI TTS Audio File Format Not Supported

The requested audio file format is not supported by the API.

Understanding OpenAI TTS

OpenAI's Text-to-Speech (TTS) API is a powerful tool designed to convert text into natural-sounding speech. It is widely used in applications that require voice synthesis, such as virtual assistants, accessibility tools, and interactive voice response systems. The API supports various languages and voices, providing developers with the flexibility to create diverse audio outputs.

Identifying the Symptom

When using the OpenAI TTS API, you might encounter an error indicating that the 'Audio File Format Not Supported'. This issue typically arises when the API is requested to generate audio in a format that it does not support.

Common Error Message

The error message you might see could be similar to: Error: Audio format not supported. This indicates that the format specified in your request is not compatible with the API's capabilities.

Exploring the Issue

The root cause of this issue is often a mismatch between the requested audio format and the formats supported by the OpenAI TTS API. The API has specific requirements for audio file formats, and any deviation from these can result in errors.

Supported Audio Formats

To resolve this issue, it is crucial to understand which audio formats are supported by the API. Typically, formats like MP3 and WAV are supported, but it's essential to verify this in the OpenAI API documentation.

Steps to Resolve the Issue

Follow these steps to fix the 'Audio File Format Not Supported' error:

Step 1: Review API Documentation

First, consult the OpenAI TTS API documentation to confirm the list of supported audio formats. Ensure that your request aligns with these specifications.

Step 2: Modify Your Request

Adjust your API request to use a supported audio format. For example, if you initially requested an unsupported format like OGG, change it to a supported format such as MP3 or WAV. Here is a sample request:

{
"text": "Hello, world!",
"voice": "en-US-Wavenet-D",
"audio_format": "mp3"
}

Step 3: Test the Request

After modifying your request, test it to ensure that the API responds correctly and generates the desired audio output. If the issue persists, double-check the format and other parameters.

Conclusion

By ensuring that your audio format matches the supported formats listed in the OpenAI TTS API documentation, you can resolve the 'Audio File Format Not Supported' error. Always keep your API requests updated with the latest specifications to avoid similar issues in the future. For further assistance, consider reaching out to OpenAI Support.

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