MoviePy制作pyqt5进度条

我修改了 \Python38\Lib\site-packages\moviepy\audio\io\AudioFileClip.py我添加了一个新方法：def len(self):     return self.duration现在 Python38\Lib\site-packages\moviepy\audio\io\ffmpeg_audiowriter.py 看起来像：import osimport subprocess as spimport proglogfrom moviepy.compat import DEVNULLfrom moviepy.config import get_settingfrom moviepy.decorators import requires_durationimport mathclass FFMPEG_AudioWriter:    """    A class to write an AudioClip into an audio file.    Parameters    ------------    filename      Name of any video or audio file, like ``video.mp4`` or ``sound.wav`` etc.    size      Size (width,height) in pixels of the output video.    fps_input      Frames per second of the input audio (given by the AUdioClip being      written down).    codec      Name of the ffmpeg codec to use for the output.    bitrate:      A string indicating the bitrate of the final video. Only      relevant for codecs which accept a bitrate.    """    def __init__(self, filename, fps_input, nbytes=2,                 nchannels=2, codec='libfdk_aac', bitrate=None,                 input_video=None, logfile=None, ffmpeg_params=None):        self.filename = filename        self.codec = codec        if logfile is None:            logfile = sp.PIPE        cmd = ([get_setting("FFMPEG_BINARY"), '-y',                "-loglevel", "error" if logfile == sp.PIPE else "info",                "-f", 's%dle' % (8*nbytes),                "-acodec",'pcm_s%dle' % (8*nbytes),                '-ar', "%d" % fps_input,                '-ac', "%d" % nchannels,                '-i', '-']               + (['-vn'] if input_video is None else ["-i", input_video, '-vcodec', 'copy'])               + ['-acodec', codec]               + ['-ar', "%d" % fps_input]               + ['-strict', '-2']  # needed to support codec 'aac'               + (['-ab', bitrate] if (bitrate is not None) else [])               + (ffmpeg_params if ffmpeg_params else [])               + [filename])        popen_params = {"stdout": DEVNULL,                        "stderr": logfile,                        "stdin": sp.PIPE}        if os.name == "nt":            popen_params["creationflags"] = 0x08000000        self.proc = sp.Popen(cmd, **popen_params)    def write_frames(self, frames_array):        try:            try:                self.proc.stdin.write(frames_array.tobytes())            except NameError:                self.proc.stdin.write(frames_array.tostring())        except IOError as err:            ffmpeg_error = self.proc.stderr.read()            error = (str(err) + ("\n\nMoviePy error: FFMPEG encountered "                                 "the following error while writing file %s:" % self.filename                                 + "\n\n" + str(ffmpeg_error)))            if b"Unknown encoder" in ffmpeg_error:                error = (error +                         ("\n\nThe audio export failed because FFMPEG didn't "                          "find the specified codec for audio encoding (%s). "                          "Please install this codec or change the codec when "                          "calling to_videofile or to_audiofile. For instance "                          "for mp3:\n"                          "   >>> to_videofile('myvid.mp4', audio_codec='libmp3lame')"                          ) % (self.codec))            elif b"incorrect codec parameters ?" in ffmpeg_error:                error = (error +                         ("\n\nThe audio export failed, possibly because the "                          "codec specified for the video (%s) is not compatible"                          " with the given extension (%s). Please specify a "                          "valid 'codec' argument in to_videofile. This would "                          "be 'libmp3lame' for mp3, 'libvorbis' for ogg...")                         % (self.codec, self.ext))            elif b"encoder setup failed" in ffmpeg_error:                error = (error +                         ("\n\nThe audio export failed, possily because the "                          "bitrate you specified was two high or too low for "                          "the video codec."))            else:                error = (error +                         ("\n\nIn case it helps, make sure you are using a "                          "recent version of FFMPEG (the versions in the "                          "Ubuntu/Debian repos are deprecated)."))            raise IOError(error)    def close(self):        if hasattr(self, 'proc') and self.proc:            self.proc.stdin.close()            self.proc.stdin = None            if self.proc.stderr is not None:                self.proc.stderr.close()                self.proc.stdee = None            # If this causes deadlocks, consider terminating instead.            self.proc.wait()            self.proc = None    def __del__(self):        # If the garbage collector comes, make sure the subprocess is terminated.        self.close()    # Support the Context Manager protocol, to ensure that resources are cleaned up.    def __enter__(self):        return self    def __exit__(self, exc_type, exc_value, traceback):        self.close()@requires_durationdef ffmpeg_audiowrite(clip, filename, fps, nbytes, buffersize,                      codec='libvorbis', bitrate=None,                      write_logfile=False, verbose=True,                      ffmpeg_params=None, logger='bar',progress_function=None):    """    A function that wraps the FFMPEG_AudioWriter to write an AudioClip    to a file.    NOTE: verbose is deprecated.    """    if write_logfile:        logfile = open(filename + ".log", 'w+')    else:        logfile = None    logger = proglog.default_bar_logger(logger)    logger(message="MoviePy - Writing audio in %s" % filename)    writer = FFMPEG_AudioWriter(filename, fps, nbytes, clip.nchannels,                                codec=codec, bitrate=bitrate,                                logfile=logfile,                                ffmpeg_params=ffmpeg_params)    all_chunks = clip.iter_chunks(chunksize=buffersize,                                  quantize=True,                                  nbytes=nbytes, fps=fps,                                  logger=logger)        counter = 0    total_chunks = math.ceil(fps*clip.len()/buffersize)    print(clip.len())    for chunk in all_chunks:        counter = counter + 1        writer.write_frames(chunk)        progress_function(str(counter),str(total_chunks))    writer.close()    if write_logfile:        logfile.close()    logger(message="MoviePy - Done.")并且total_chunks与最终计数器相同！

MoviePy制作pyqt5进度条

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