openai

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whisper-medium

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An error occurs in the following chord in rare cases.
Please let me know the solution.

There was no difference in the shape of the input from other voice data.

code:

device = 'cuda'
model_path = 'openai/whisper-medium'

model = WhisperForConditionalGeneration.from_pretrained(model_path)
processor = WhisperProcessor.from_pretrained(model_path, language="Japanese", task="transcribe")

model.config.forced_decoder_ids = self._processor.get_decoder_prompt_ids( language = "ja", task = "transcribe")
model.config.suppress_tokens = []
model.to(device)

inputs = processor.feature_extractor(
            audio_data,
            return_tensors="pt",
            sampling_rate=16_000
).input_features.to(device)
print(inputs.shape)
# torch.Size([1, 80, 3000])

predicted_ids = self._model.generate(
            inputs,
            max_length=sample_rate * 30,
           forced_decoder_ids=model.config.forced_decoder_ids
)
# error occured!!
# I don't think "forced_decoder_ids=..." needs to be done, but for some reason the language is "fi", so I specify it explicitly.

error:

Traceback (most recent call last):
  File "/xxx/infer.py", line 68, in transcribe
    predicted_ids = self._model.generate(
  File "/xxx/lib/python3.9/site-packages/torch/autograd/grad_mode.py", line 27, in decorate_context
    return func(*args, **kwargs)
  File "/xxx/lib/python3.9/site-packages/transformers/generation/utils.py", line 1391, in generate
    return self.greedy_search(
  File "/xxx/lib/python3.9/site-packages/transformers/generation/utils.py", line 2189, in greedy_search
    next_token_logits = outputs.logits[:, -1, :]
IndexError: index -1 is out of bounds for dimension 1 with size 0