mirror of
https://github.com/l1ving/youtube-dl
synced 2024-11-22 17:45:17 +08:00
521 lines
20 KiB
Python
521 lines
20 KiB
Python
from __future__ import unicode_literals
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import io
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import os
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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 ..compat import (
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compat_subprocess_get_DEVNULL,
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)
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from ..utils import (
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encodeArgument,
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encodeFilename,
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get_exe_version,
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is_outdated_version,
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PostProcessingError,
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prepend_extension,
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shell_quote,
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subtitles_filename,
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dfxp2srt,
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ISO639Utils,
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)
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class FFmpegPostProcessorError(PostProcessingError):
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pass
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class FFmpegPostProcessor(PostProcessor):
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def __init__(self, downloader=None):
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PostProcessor.__init__(self, downloader)
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self._determine_executables()
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def check_version(self):
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if not self.available:
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raise FFmpegPostProcessorError('ffmpeg or avconv not found. Please install one.')
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required_version = '10-0' if self.basename == 'avconv' else '1.0'
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if is_outdated_version(
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self._versions[self.basename], required_version):
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warning = 'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % (
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self.basename, self.basename, required_version)
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if self._downloader:
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self._downloader.report_warning(warning)
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@staticmethod
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def get_versions(downloader=None):
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return FFmpegPostProcessor(downloader)._versions
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def _determine_executables(self):
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programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
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prefer_ffmpeg = self._downloader.params.get('prefer_ffmpeg', False)
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self.basename = None
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self.probe_basename = None
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self._paths = None
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self._versions = None
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if self._downloader:
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location = self._downloader.params.get('ffmpeg_location')
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if location is not None:
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if not os.path.exists(location):
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self._downloader.report_warning(
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'ffmpeg-location %s does not exist! '
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'Continuing without avconv/ffmpeg.' % (location))
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self._versions = {}
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return
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elif not os.path.isdir(location):
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basename = os.path.splitext(os.path.basename(location))[0]
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if basename not in programs:
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self._downloader.report_warning(
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'Cannot identify executable %s, its basename should be one of %s. '
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'Continuing without avconv/ffmpeg.' %
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(location, ', '.join(programs)))
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self._versions = {}
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return None
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location = os.path.dirname(os.path.abspath(location))
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if basename in ('ffmpeg', 'ffprobe'):
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prefer_ffmpeg = True
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self._paths = dict(
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(p, os.path.join(location, p)) for p in programs)
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self._versions = dict(
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(p, get_exe_version(self._paths[p], args=['-version']))
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for p in programs)
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if self._versions is None:
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self._versions = dict(
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(p, get_exe_version(p, args=['-version'])) for p in programs)
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self._paths = dict((p, p) for p in programs)
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if prefer_ffmpeg:
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prefs = ('ffmpeg', 'avconv')
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else:
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prefs = ('avconv', 'ffmpeg')
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for p in prefs:
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if self._versions[p]:
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self.basename = p
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break
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if prefer_ffmpeg:
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prefs = ('ffprobe', 'avprobe')
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else:
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prefs = ('avprobe', 'ffprobe')
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for p in prefs:
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if self._versions[p]:
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self.probe_basename = p
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break
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@property
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def available(self):
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return self.basename is not None
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@property
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def executable(self):
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return self._paths[self.basename]
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@property
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def probe_available(self):
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return self.probe_basename is not None
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@property
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def probe_executable(self):
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return self._paths[self.probe_basename]
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def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
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self.check_version()
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oldest_mtime = min(
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os.stat(encodeFilename(path)).st_mtime for path in input_paths)
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opts += self._configuration_args()
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files_cmd = []
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for path in input_paths:
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files_cmd.extend([encodeArgument('-i'), encodeFilename(path, True)])
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cmd = ([encodeFilename(self.executable, True), encodeArgument('-y')] +
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files_cmd +
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[encodeArgument(o) for o in opts] +
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[encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
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if self._downloader.params.get('verbose', False):
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self._downloader.to_screen('[debug] ffmpeg command line: %s' % shell_quote(cmd))
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
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stdout, stderr = p.communicate()
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if p.returncode != 0:
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stderr = stderr.decode('utf-8', 'replace')
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msg = stderr.strip().split('\n')[-1]
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raise FFmpegPostProcessorError(msg)
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self.try_utime(out_path, oldest_mtime, oldest_mtime)
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def run_ffmpeg(self, path, out_path, opts):
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self.run_ffmpeg_multiple_files([path], out_path, opts)
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def _ffmpeg_filename_argument(self, fn):
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# ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
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if fn.startswith('-'):
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return './' + fn
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return fn
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class FFmpegExtractAudioPP(FFmpegPostProcessor):
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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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if preferredcodec is None:
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preferredcodec = 'best'
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self._preferredcodec = preferredcodec
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self._preferredquality = preferredquality
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self._nopostoverwrites = nopostoverwrites
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def get_audio_codec(self, path):
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if not self.probe_available:
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raise PostProcessingError('ffprobe or avprobe not found. Please install one.')
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try:
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cmd = [
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encodeFilename(self.probe_executable, True),
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encodeArgument('-show_streams'),
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encodeFilename(self._ffmpeg_filename_argument(path), True)]
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if self._downloader.params.get('verbose', False):
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self._downloader.to_screen('[debug] %s command line: %s' % (self.basename, shell_quote(cmd)))
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handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE, stdin=subprocess.PIPE)
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output = handle.communicate()[0]
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if handle.wait() != 0:
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return None
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except (IOError, OSError):
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return None
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audio_codec = None
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for line in output.decode('ascii', 'ignore').split('\n'):
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if line.startswith('codec_name='):
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audio_codec = line.split('=')[1].strip()
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elif line.strip() == 'codec_type=audio' and audio_codec is not None:
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return audio_codec
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return None
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def run_ffmpeg(self, path, out_path, codec, more_opts):
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if codec is None:
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acodec_opts = []
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else:
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acodec_opts = ['-acodec', codec]
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opts = ['-vn'] + acodec_opts + more_opts
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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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def run(self, information):
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path = information['filepath']
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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', '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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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 = []
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if self._preferredquality is not None:
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if int(self._preferredquality) < 10:
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more_opts += ['-q:a', self._preferredquality]
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else:
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more_opts += ['-b:a', self._preferredquality + 'k']
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else:
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# We convert the audio (lossy)
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acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'opus': 'opus', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
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extension = self._preferredcodec
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more_opts = []
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if self._preferredquality is not None:
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# The opus codec doesn't support the -aq option
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if int(self._preferredquality) < 10 and extension != 'opus':
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more_opts += ['-q:a', self._preferredquality]
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else:
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more_opts += ['-b:a', self._preferredquality + 'k']
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if self._preferredcodec == 'aac':
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more_opts += ['-f', 'adts']
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if self._preferredcodec == 'm4a':
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more_opts += ['-bsf:a', 'aac_adtstoasc']
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if self._preferredcodec == 'vorbis':
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extension = 'ogg'
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if self._preferredcodec == 'wav':
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extension = 'wav'
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more_opts += ['-f', 'wav']
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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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new_path = prefix + sep + extension
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# If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
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if (new_path == path or
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(self._nopostoverwrites and os.path.exists(encodeFilename(new_path)))):
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self._downloader.to_screen('[youtube] Post-process file %s exists, skipping' % new_path)
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return [], information
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try:
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self._downloader.to_screen('[' + self.basename + '] Destination: ' + new_path)
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self.run_ffmpeg(path, new_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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# 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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information['filepath'] = new_path
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information['ext'] = extension
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return [path], information
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class FFmpegVideoConvertorPP(FFmpegPostProcessor):
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def __init__(self, downloader=None, preferedformat=None):
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super(FFmpegVideoConvertorPP, self).__init__(downloader)
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self._preferedformat = preferedformat
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def run(self, information):
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path = information['filepath']
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if information['ext'] == self._preferedformat:
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self._downloader.to_screen('[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
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return [], information
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options = []
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if self._preferedformat == 'avi':
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options.extend(['-c:v', 'libxvid', '-vtag', 'XVID'])
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prefix, sep, ext = path.rpartition('.')
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outpath = prefix + sep + self._preferedformat
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self._downloader.to_screen('[' + 'ffmpeg' + '] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) + outpath)
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self.run_ffmpeg(path, outpath, options)
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information['filepath'] = outpath
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information['format'] = self._preferedformat
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information['ext'] = self._preferedformat
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return [path], information
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class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
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def run(self, information):
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if information['ext'] not in ['mp4', 'mkv']:
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self._downloader.to_screen('[ffmpeg] Subtitles can only be embedded in mp4 or mkv files')
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return [], information
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subtitles = information.get('requested_subtitles')
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if not subtitles:
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self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to embed')
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return [], information
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sub_langs = list(subtitles.keys())
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filename = information['filepath']
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sub_filenames = [subtitles_filename(filename, lang, sub_info['ext']) for lang, sub_info in subtitles.items()]
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input_files = [filename] + sub_filenames
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opts = [
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'-map', '0',
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'-c', 'copy',
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# Don't copy the existing subtitles, we may be running the
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# postprocessor a second time
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'-map', '-0:s',
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]
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if information['ext'] == 'mp4':
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opts += ['-c:s', 'mov_text']
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for (i, lang) in enumerate(sub_langs):
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opts.extend(['-map', '%d:0' % (i + 1)])
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lang_code = ISO639Utils.short2long(lang)
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if lang_code is not None:
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opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
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temp_filename = prepend_extension(filename, 'temp')
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self._downloader.to_screen('[ffmpeg] Embedding subtitles in \'%s\'' % filename)
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self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
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os.remove(encodeFilename(filename))
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os.rename(encodeFilename(temp_filename), encodeFilename(filename))
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return sub_filenames, information
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class FFmpegMetadataPP(FFmpegPostProcessor):
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def run(self, info):
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metadata = {}
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if info.get('title') is not None:
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metadata['title'] = info['title']
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if info.get('upload_date') is not None:
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metadata['date'] = info['upload_date']
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if info.get('artist') is not None:
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metadata['artist'] = info['artist']
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elif info.get('uploader') is not None:
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metadata['artist'] = info['uploader']
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elif info.get('uploader_id') is not None:
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metadata['artist'] = info['uploader_id']
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if info.get('description') is not None:
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metadata['description'] = info['description']
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metadata['comment'] = info['description']
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if info.get('webpage_url') is not None:
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metadata['purl'] = info['webpage_url']
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if info.get('album') is not None:
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metadata['album'] = info['album']
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if not metadata:
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self._downloader.to_screen('[ffmpeg] There isn\'t any metadata to add')
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return [], info
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filename = info['filepath']
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temp_filename = prepend_extension(filename, 'temp')
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if info['ext'] == 'm4a':
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options = ['-vn', '-acodec', 'copy']
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else:
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options = ['-c', 'copy']
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for (name, value) in metadata.items():
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options.extend(['-metadata', '%s=%s' % (name, value)])
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self._downloader.to_screen('[ffmpeg] Adding metadata to \'%s\'' % filename)
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self.run_ffmpeg(filename, temp_filename, options)
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os.remove(encodeFilename(filename))
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os.rename(encodeFilename(temp_filename), encodeFilename(filename))
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return [], info
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class FFmpegMergerPP(FFmpegPostProcessor):
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def run(self, info):
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filename = info['filepath']
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temp_filename = prepend_extension(filename, 'temp')
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args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0']
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self._downloader.to_screen('[ffmpeg] Merging formats into "%s"' % filename)
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self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args)
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os.rename(encodeFilename(temp_filename), encodeFilename(filename))
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return info['__files_to_merge'], info
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def can_merge(self):
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# TODO: figure out merge-capable ffmpeg version
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if self.basename != 'avconv':
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return True
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required_version = '10-0'
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if is_outdated_version(
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self._versions[self.basename], required_version):
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warning = ('Your copy of %s is outdated and unable to properly mux separate video and audio files, '
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'youtube-dl will download single file media. '
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'Update %s to version %s or newer to fix this.') % (
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self.basename, self.basename, required_version)
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if self._downloader:
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self._downloader.report_warning(warning)
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return False
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return True
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class FFmpegFixupStretchedPP(FFmpegPostProcessor):
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def run(self, info):
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stretched_ratio = info.get('stretched_ratio')
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if stretched_ratio is None or stretched_ratio == 1:
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return [], info
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filename = info['filepath']
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temp_filename = prepend_extension(filename, 'temp')
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options = ['-c', 'copy', '-aspect', '%f' % stretched_ratio]
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self._downloader.to_screen('[ffmpeg] Fixing aspect ratio in "%s"' % filename)
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self.run_ffmpeg(filename, temp_filename, options)
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os.remove(encodeFilename(filename))
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os.rename(encodeFilename(temp_filename), encodeFilename(filename))
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return [], info
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class FFmpegFixupM4aPP(FFmpegPostProcessor):
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def run(self, info):
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if info.get('container') != 'm4a_dash':
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return [], info
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filename = info['filepath']
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temp_filename = prepend_extension(filename, 'temp')
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options = ['-c', 'copy', '-f', 'mp4']
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self._downloader.to_screen('[ffmpeg] Correcting container in "%s"' % filename)
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self.run_ffmpeg(filename, temp_filename, options)
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os.remove(encodeFilename(filename))
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os.rename(encodeFilename(temp_filename), encodeFilename(filename))
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return [], info
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class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
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def __init__(self, downloader=None, format=None):
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super(FFmpegSubtitlesConvertorPP, self).__init__(downloader)
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self.format = format
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def run(self, info):
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subs = info.get('requested_subtitles')
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filename = info['filepath']
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new_ext = self.format
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new_format = new_ext
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if new_format == 'vtt':
|
|
new_format = 'webvtt'
|
|
if subs is None:
|
|
self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to convert')
|
|
return [], info
|
|
self._downloader.to_screen('[ffmpeg] Converting subtitles')
|
|
for lang, sub in subs.items():
|
|
ext = sub['ext']
|
|
if ext == new_ext:
|
|
self._downloader.to_screen(
|
|
'[ffmpeg] Subtitle file for %s is already in the requested'
|
|
'format' % new_ext)
|
|
continue
|
|
new_file = subtitles_filename(filename, lang, new_ext)
|
|
|
|
if ext == 'dfxp' or ext == 'ttml':
|
|
self._downloader.report_warning(
|
|
'You have requested to convert dfxp (TTML) subtitles into another format, '
|
|
'which results in style information loss')
|
|
|
|
dfxp_file = subtitles_filename(filename, lang, ext)
|
|
srt_file = subtitles_filename(filename, lang, 'srt')
|
|
|
|
with io.open(dfxp_file, 'rt', encoding='utf-8') as f:
|
|
srt_data = dfxp2srt(f.read())
|
|
|
|
with io.open(srt_file, 'wt', encoding='utf-8') as f:
|
|
f.write(srt_data)
|
|
|
|
ext = 'srt'
|
|
subs[lang] = {
|
|
'ext': 'srt',
|
|
'data': srt_data
|
|
}
|
|
|
|
if new_ext == 'srt':
|
|
continue
|
|
|
|
self.run_ffmpeg(
|
|
subtitles_filename(filename, lang, ext),
|
|
new_file, ['-f', new_format])
|
|
|
|
with io.open(new_file, 'rt', encoding='utf-8') as f:
|
|
subs[lang] = {
|
|
'ext': ext,
|
|
'data': f.read(),
|
|
}
|
|
|
|
return [], info
|