52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
import platform, os
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import ffmpeg
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import numpy as np
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import av
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from io import BytesIO
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def wav2(i, o, format):
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inp = av.open(i, "rb")
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if format == "m4a":
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format = "mp4"
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out = av.open(o, "wb", format=format)
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if format == "ogg":
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format = "libvorbis"
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if format == "mp4":
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format = "aac"
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ostream = out.add_stream(format)
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for frame in inp.decode(audio=0):
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for p in ostream.encode(frame):
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out.mux(p)
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for p in ostream.encode(None):
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out.mux(p)
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out.close()
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inp.close()
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def load_audio(file, sr):
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try:
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# https://github.com/openai/whisper/blob/main/whisper/audio.py#L26
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# This launches a subprocess to decode audio while down-mixing and resampling as necessary.
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# Requires the ffmpeg CLI and `ffmpeg-python` package to be installed.
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file = clean_path(file) # 防止小白拷路径头尾带了空格和"和回车
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out, _ = (
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ffmpeg.input(file, threads=0)
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.output("-", format="f32le", acodec="pcm_f32le", ac=1, ar=sr)
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.run(cmd=["ffmpeg", "-nostdin"], capture_stdout=True, capture_stderr=True)
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)
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except Exception as e:
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raise RuntimeError(f"Failed to load audio: {e}")
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return np.frombuffer(out, np.float32).flatten()
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def clean_path(path_str):
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if platform.system() == "Windows":
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path_str = path_str.replace("/", "\\")
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return path_str.strip(" ").strip('"').strip("\n").strip('"').strip(" ")
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