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Throw exception when streaming is used with unsupported whisper-1 model #537

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Merged
merged 2 commits into from
Jul 15, 2025
Merged

Throw exception when streaming is used with unsupported whisper-1 model #537

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Throw exception when streaming is used with unsupported whisper-1 model
ShivangiReja Jul 15, 2025
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ShivangiReja Jul 15, 2025
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20 changes: 20 additions & 0 deletions src/Custom/Audio/AudioClient.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -229,6 +229,11 @@ public virtual AsyncCollectionResult<StreamingAudioTranscriptionUpdate> Transcri
Argument.AssertNotNull(audio, nameof(audio));
Argument.AssertNotNullOrEmpty(audioFilename, nameof(audioFilename));

if (string.Equals(_model, "whisper-1", StringComparison.OrdinalIgnoreCase))
{
throw new NotSupportedException($"The selected model {_model} does not support streaming transcription. Please use a compatible model.");
}

MultiPartFormDataBinaryContent content
= CreatePerCallTranscriptionOptions(options, stream: true)
.ToMultipartContent(audio, audioFilename);
Expand All @@ -245,6 +250,11 @@ public virtual AsyncCollectionResult<StreamingAudioTranscriptionUpdate> Transcri
{
Argument.AssertNotNullOrEmpty(audioFilePath, nameof(audioFilePath));

if (string.Equals(_model, "whisper-1", StringComparison.OrdinalIgnoreCase))
{
throw new NotSupportedException($"The selected model {_model} does not support streaming transcription. Please use a compatible model.");
}

FileStream inputStream = File.OpenRead(audioFilePath);

MultiPartFormDataBinaryContent content
Expand All @@ -266,6 +276,11 @@ public virtual CollectionResult<StreamingAudioTranscriptionUpdate> TranscribeAud
Argument.AssertNotNull(audio, nameof(audio));
Argument.AssertNotNullOrEmpty(audioFilename, nameof(audioFilename));

if (string.Equals(_model, "whisper-1", StringComparison.OrdinalIgnoreCase))
{
throw new NotSupportedException($"The selected model {_model} does not support streaming transcription. Please use a compatible model.");
}

MultiPartFormDataBinaryContent content
= CreatePerCallTranscriptionOptions(options, stream: true)
.ToMultipartContent(audio, audioFilename);
Expand All @@ -282,6 +297,11 @@ public virtual CollectionResult<StreamingAudioTranscriptionUpdate> TranscribeAud
{
Argument.AssertNotNullOrEmpty(audioFilePath, nameof(audioFilePath));

if (string.Equals(_model, "whisper-1", StringComparison.OrdinalIgnoreCase))
{
throw new NotSupportedException($"The selected model {_model} does not support streaming transcription. Please use a compatible model.");
}

FileStream inputStream = File.OpenRead(audioFilePath);

MultiPartFormDataBinaryContent content
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26 changes: 26 additions & 0 deletions tests/Audio/TranscriptionTests.cs
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Expand Up @@ -322,4 +322,30 @@ public async Task StreamingTranscriptionWorks(AudioSourceKind audioSourceKind)

inputStream?.Dispose();
}

[Test]
[TestCase(AudioSourceKind.UsingStream)]
[TestCase(AudioSourceKind.UsingFilePath)]
public void StreamingTranscriptionThrowsForWhisperModel(AudioSourceKind audioSourceKind)
{
AudioClient client = GetTestClient<AudioClient>(TestScenario.Audio_Whisper);
string filename = "audio_hello_world.mp3";
string path = Path.Combine("Assets", filename);

if (audioSourceKind == AudioSourceKind.UsingStream)
{
using FileStream inputStream = File.OpenRead(path);
Assert.Throws<NotSupportedException>(() =>
{
_ = client.TranscribeAudioStreamingAsync(inputStream, filename);
});
}
else if (audioSourceKind == AudioSourceKind.UsingFilePath)
{
Assert.Throws<NotSupportedException>(() =>
{
_ = client.TranscribeAudioStreamingAsync(path);
});
}
}
}