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https://github.com/LucBerge/yt-dlp.git
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[ExtractAudio, cleanup] Refactor
This commit is contained in:
pukkandan
parent
b7c47b7438
commit
35faefee5d
5 changed files with 57 additions and 92 deletions
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@ -6,7 +6,7 @@ import re
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import subprocess
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import time
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from .common import AudioConversionError, PostProcessor
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from .common import PostProcessor
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from ..compat import functools, imghdr
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from ..utils import (
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ISO639Utils,
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@ -45,19 +45,20 @@ EXT_TO_OUT_FORMATS = {
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'vtt': 'webvtt',
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}
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ACODECS = {
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'mp3': 'libmp3lame',
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'aac': 'aac',
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'flac': 'flac',
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'm4a': 'aac',
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'opus': 'libopus',
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'vorbis': 'libvorbis',
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'wav': None,
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'alac': None,
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# name: (ext, encoder, opts)
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'mp3': ('mp3', 'libmp3lame', ()),
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'aac': ('m4a', 'aac', ('-f', 'adts')),
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'm4a': ('m4a', 'aac', ('-bsf:a', 'aac_adtstoasc')),
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'opus': ('opus', 'libopus', ()),
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'vorbis': ('ogg', 'libvorbis', ()),
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'flac': ('flac', 'flac', ()),
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'alac': ('m4a', None, ('-acodec', 'alac')),
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'wav': ('wav', None, ('-f', 'wav')),
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}
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def create_mapping_re(supported):
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return re.compile(r'{0}(?:/{0})*$'.format(r'(?:\w+>)?(?:%s)' % '|'.join(supported)))
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return re.compile(r'{0}(?:/{0})*$'.format(r'(?:\s*\w+\s*>)?\s*(?:%s)\s*' % '|'.join(supported)))
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def resolve_mapping(source, mapping):
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@ -424,7 +425,7 @@ class FFmpegPostProcessor(PostProcessor):
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class FFmpegExtractAudioPP(FFmpegPostProcessor):
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COMMON_AUDIO_EXTS = ('wav', 'flac', 'm4a', 'aiff', 'mp3', 'ogg', 'mka', 'opus', 'wma')
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SUPPORTED_EXTS = ('aac', 'flac', 'mp3', 'm4a', 'opus', 'vorbis', 'wav', 'alac')
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SUPPORTED_EXTS = tuple(ACODECS.keys())
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def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
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FFmpegPostProcessor.__init__(self, downloader)
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@ -463,71 +464,45 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
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try:
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FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts)
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except FFmpegPostProcessorError as err:
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raise AudioConversionError(err.msg)
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raise PostProcessingError(f'audio conversion failed: {err.msg}')
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@PostProcessor._restrict_to(images=False)
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def run(self, information):
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orig_path = path = information['filepath']
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orig_ext = information['ext']
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if self._preferredcodec == 'best' and orig_ext in self.COMMON_AUDIO_EXTS:
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self.to_screen('Skipping audio extraction since the file is already in a common audio format')
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target_format = self._preferredcodec
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if target_format == 'best' and information['ext'] in self.COMMON_AUDIO_EXTS:
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self.to_screen(f'Not converting audio {orig_path}; the file is already in a common audio format')
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return [], information
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filecodec = self.get_audio_codec(path)
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if filecodec is None:
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raise PostProcessingError('WARNING: unable to obtain file audio codec with ffprobe')
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more_opts = []
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if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
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if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
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# Lossless, but in another container
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acodec = 'copy'
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extension = 'm4a'
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more_opts = ['-bsf:a', 'aac_adtstoasc']
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elif filecodec in ['aac', 'flac', 'mp3', 'vorbis', 'opus']:
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# Lossless if possible
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acodec = 'copy'
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extension = filecodec
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if filecodec == 'aac':
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more_opts = ['-f', 'adts']
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if filecodec == 'vorbis':
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extension = 'ogg'
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elif filecodec == 'alac':
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acodec = None
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extension = 'm4a'
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more_opts += ['-acodec', 'alac']
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else:
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# MP3 otherwise.
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acodec = 'libmp3lame'
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extension = 'mp3'
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more_opts = self._quality_args(acodec)
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if filecodec == 'aac' and target_format in ('m4a', 'best'):
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# Lossless, but in another container
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extension, _, more_opts, acodec = *ACODECS['m4a'], 'copy'
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elif target_format == 'best' or target_format == filecodec:
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# Lossless if possible
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try:
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extension, _, more_opts, acodec = *ACODECS[filecodec], 'copy'
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except KeyError:
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extension, acodec, more_opts = ACODECS['mp3']
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else:
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# We convert the audio (lossy if codec is lossy)
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acodec = ACODECS[self._preferredcodec]
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extension, acodec, more_opts = ACODECS[target_format]
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if acodec == 'aac' and self._features.get('fdk'):
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acodec = 'libfdk_aac'
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extension = self._preferredcodec
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more_opts = self._quality_args(acodec)
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if self._preferredcodec == 'aac':
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more_opts += ['-f', 'adts']
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elif self._preferredcodec == 'm4a':
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more_opts += ['-bsf:a', 'aac_adtstoasc']
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elif self._preferredcodec == 'vorbis':
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extension = 'ogg'
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elif self._preferredcodec == 'wav':
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extension = 'wav'
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more_opts += ['-f', 'wav']
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elif self._preferredcodec == 'alac':
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extension = 'm4a'
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more_opts += ['-acodec', 'alac']
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acodec, more_opts = 'libfdk_aac', []
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prefix, sep, ext = path.rpartition('.') # not os.path.splitext, since the latter does not work on unicode in all setups
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temp_path = new_path = prefix + sep + extension
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more_opts = list(more_opts)
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if acodec != 'copy':
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more_opts = self._quality_args(acodec)
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# not os.path.splitext, since the latter does not work on unicode in all setups
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temp_path = new_path = f'{path.rpartition(".")[0]}.{extension}'
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if new_path == path:
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if acodec == 'copy':
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self.to_screen(f'File is already in target format {self._preferredcodec}, skipping')
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self.to_screen(f'Not converting audio {orig_path}; file is already in target format {target_format}')
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return [], information
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orig_path = prepend_extension(path, 'orig')
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temp_path = prepend_extension(path, 'temp')
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@ -536,14 +511,8 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
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self.to_screen('Post-process file %s exists, skipping' % new_path)
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return [], information
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try:
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self.to_screen(f'Destination: {new_path}')
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self.run_ffmpeg(path, temp_path, acodec, more_opts)
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except AudioConversionError as e:
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raise PostProcessingError(
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'audio conversion failed: ' + e.msg)
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except Exception:
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raise PostProcessingError('error running ' + self.basename)
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self.to_screen(f'Destination: {new_path}')
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self.run_ffmpeg(path, temp_path, acodec, more_opts)
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os.replace(path, orig_path)
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os.replace(temp_path, new_path)
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@ -553,8 +522,7 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
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# Try to update the date time for extracted audio file.
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if information.get('filetime') is not None:
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self.try_utime(
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new_path, time.time(), information['filetime'],
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errnote='Cannot update utime of audio file')
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new_path, time.time(), information['filetime'], errnote='Cannot update utime of audio file')
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return [orig_path], information
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