import platform, os import ffmpeg import numpy as np import av from io import BytesIO def wav2(i, o, format): inp = av.open(i, "rb") if format == "m4a": format = "mp4" out = av.open(o, "wb", format=format) if format == "ogg": format = "libvorbis" if format == "mp4": format = "aac" ostream = out.add_stream(format) for frame in inp.decode(audio=0): for p in ostream.encode(frame): out.mux(p) for p in ostream.encode(None): out.mux(p) out.close() inp.close() def load_audio(file, sr): try: # https://github.com/openai/whisper/blob/main/whisper/audio.py#L26 # This launches a subprocess to decode audio while down-mixing and resampling as necessary. # Requires the ffmpeg CLI and `ffmpeg-python` package to be installed. file = clean_path(file) # 防止小白拷路径头尾带了空格和"和回车 if os.path.exists(file) == False: raise RuntimeError( "You input a wrong audio path that does not exists, please fix it!" ) out, _ = ( ffmpeg.input(file, threads=0) .output("-", format="f32le", acodec="pcm_f32le", ac=1, ar=sr) .run(cmd=["ffmpeg", "-nostdin"], capture_stdout=True, capture_stderr=True) ) except Exception as e: traceback.print_exc() raise RuntimeError(f"Failed to load audio: {e}") return np.frombuffer(out, np.float32).flatten() def clean_path(path_str): if platform.system() == "Windows": path_str = path_str.replace("/", "\\") return path_str.strip(" ").strip('"').strip("\n").strip('"').strip(" ")