fix: support loading .pcm (16k 1c 16bit) audio files in load_utils.py (#2667) (#2668)
- Fix "Failed to load audio" error when recognizing .pcm audio files (16kHz, mono, 16bit)
- Ensure .pcm file support as described in issue #2667
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| | | # This launches a subprocess to decode audio while down-mixing |
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| | | # and resampling as necessary. Requires the ffmpeg CLI in PATH. |
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| | | # fmt: off |
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| | | pcm_params = [] |
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| | | if file.lower().endswith('.pcm'): |
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| | | pcm_params = [ |
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| | | "-f", "s16le", |
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| | | "-ar", str(sr), |
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| | | "-ac", "1" |
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| | | ] |
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| | | |
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| | | cmd = [ |
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| | | "ffmpeg", |
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| | | "-nostdin", |
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| | | "-threads", "0", |
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| | | *pcm_params, # PCM files need input format specified before -i since PCM is raw data without headers |
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| | | "-i", file, |
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| | | "-f", "s16le", |
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| | | "-ac", "1", |
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