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The Google Speech API is a powerful tool that allows developers to convert audio to text by applying neural network models in an easy-to-use API. It supports a variety of languages and is widely used in applications that require speech recognition capabilities.
When using the Google Speech API, you might encounter an error message indicating 'Invalid encoding'. This symptom typically arises when the audio file you are trying to process is not in a supported format.
The error message might look something like this: "error": { "code": 400, "message": "Invalid encoding" }
. This indicates that the API cannot process the audio file due to an unsupported encoding format.
The root cause of this issue is that the audio encoding format used in your request is not supported by the Google Speech API. Supported formats include LINEAR16 and FLAC, among others. Using an unsupported format will result in the API being unable to process the audio data.
For more details on supported formats, visit the Google Speech-to-Text Encoding Documentation.
To resolve the 'Invalid encoding' error, follow these steps:
Ensure that your audio file is in one of the supported formats. You can use tools like FFmpeg to check and convert your audio files.
If your audio file is not in a supported format, convert it using FFmpeg. For example, to convert an MP3 file to LINEAR16, use the following command:
ffmpeg -i input.mp3 -f wav -acodec pcm_s16le -ar 16000 -ac 1 output.wav
This command converts the input MP3 file to a WAV file with LINEAR16 encoding.
Ensure that your API request specifies the correct encoding format. For example, in your JSON request body, set the "encoding"
field to "LINEAR16"
if you are using a WAV file.
By ensuring that your audio files are in a supported format and correctly specifying the encoding in your API requests, you can effectively resolve the 'Invalid encoding' error in Google Speech API. For further assistance, refer to the Google Speech-to-Text Documentation.
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