mirror of
https://codeberg.org/polarisfm/youtube-dl
synced 2024-08-22 04:52:34 +02:00
Often, users want to be able to download only videos they haven't seen before, despite the video files having been deleted or moved in the mean time. When --download-archive FILE is given, the extractor and ID of every download is recorded in the specified file. If it is already present, the video in question is skipped.
652 lines
28 KiB
Python
652 lines
28 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import absolute_import
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import errno
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import io
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import os
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import re
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import shutil
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import socket
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import sys
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import time
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import traceback
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from .utils import *
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from .extractor import get_info_extractor, gen_extractors
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from .FileDownloader import FileDownloader
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class YoutubeDL(object):
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"""YoutubeDL class.
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YoutubeDL objects are the ones responsible of downloading the
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actual video file and writing it to disk if the user has requested
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it, among some other tasks. In most cases there should be one per
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program. As, given a video URL, the downloader doesn't know how to
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extract all the needed information, task that InfoExtractors do, it
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has to pass the URL to one of them.
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For this, YoutubeDL objects have a method that allows
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InfoExtractors to be registered in a given order. When it is passed
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a URL, the YoutubeDL object handles it to the first InfoExtractor it
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finds that reports being able to handle it. The InfoExtractor extracts
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all the information about the video or videos the URL refers to, and
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YoutubeDL process the extracted information, possibly using a File
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Downloader to download the video.
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YoutubeDL objects accept a lot of parameters. In order not to saturate
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the object constructor with arguments, it receives a dictionary of
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options instead. These options are available through the params
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attribute for the InfoExtractors to use. The YoutubeDL also
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registers itself as the downloader in charge for the InfoExtractors
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that are added to it, so this is a "mutual registration".
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Available options:
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username: Username for authentication purposes.
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password: Password for authentication purposes.
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videopassword: Password for acces a video.
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usenetrc: Use netrc for authentication instead.
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verbose: Print additional info to stdout.
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quiet: Do not print messages to stdout.
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forceurl: Force printing final URL.
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forcetitle: Force printing title.
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forceid: Force printing ID.
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forcethumbnail: Force printing thumbnail URL.
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forcedescription: Force printing description.
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forcefilename: Force printing final filename.
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simulate: Do not download the video files.
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format: Video format code.
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format_limit: Highest quality format to try.
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outtmpl: Template for output names.
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restrictfilenames: Do not allow "&" and spaces in file names
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ignoreerrors: Do not stop on download errors.
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nooverwrites: Prevent overwriting files.
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playliststart: Playlist item to start at.
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playlistend: Playlist item to end at.
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matchtitle: Download only matching titles.
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rejecttitle: Reject downloads for matching titles.
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logtostderr: Log messages to stderr instead of stdout.
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writedescription: Write the video description to a .description file
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writeinfojson: Write the video description to a .info.json file
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writethumbnail: Write the thumbnail image to a file
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writesubtitles: Write the video subtitles to a file
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writeautomaticsub: Write the automatic subtitles to a file
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allsubtitles: Downloads all the subtitles of the video
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(requires writesubtitles or writeautomaticsub)
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listsubtitles: Lists all available subtitles for the video
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subtitlesformat: Subtitle format [srt/sbv/vtt] (default=srt)
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subtitleslangs: List of languages of the subtitles to download
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keepvideo: Keep the video file after post-processing
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daterange: A DateRange object, download only if the upload_date is in the range.
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skip_download: Skip the actual download of the video file
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cachedir: Location of the cache files in the filesystem.
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None to disable filesystem cache.
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noplaylist: Download single video instead of a playlist if in doubt.
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downloadarchive: File name of a file where all downloads are recorded.
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Videos already present in the file are not downloaded
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again.
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The following parameters are not used by YoutubeDL itself, they are used by
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the FileDownloader:
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nopart, updatetime, buffersize, ratelimit, min_filesize, max_filesize, test,
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noresizebuffer, retries, continuedl, noprogress, consoletitle
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"""
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params = None
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_ies = []
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_pps = []
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_download_retcode = None
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_num_downloads = None
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_screen_file = None
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def __init__(self, params):
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"""Create a FileDownloader object with the given options."""
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self._ies = []
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self._ies_instances = {}
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self._pps = []
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self._progress_hooks = []
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self._download_retcode = 0
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self._num_downloads = 0
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self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
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if (sys.version_info >= (3,) and sys.platform != 'win32' and
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sys.getfilesystemencoding() in ['ascii', 'ANSI_X3.4-1968']
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and not params['restrictfilenames']):
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# On Python 3, the Unicode filesystem API will throw errors (#1474)
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self.report_warning(
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u'Assuming --restrict-filenames isnce file system encoding '
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u'cannot encode all charactes. '
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u'Set the LC_ALL environment variable to fix this.')
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params['restrictfilenames'] = True
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self.params = params
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self.fd = FileDownloader(self, self.params)
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if '%(stitle)s' in self.params['outtmpl']:
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self.report_warning(u'%(stitle)s is deprecated. Use the %(title)s and the --restrict-filenames flag(which also secures %(uploader)s et al) instead.')
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def add_info_extractor(self, ie):
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"""Add an InfoExtractor object to the end of the list."""
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self._ies.append(ie)
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self._ies_instances[ie.ie_key()] = ie
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ie.set_downloader(self)
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def get_info_extractor(self, ie_key):
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"""
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Get an instance of an IE with name ie_key, it will try to get one from
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the _ies list, if there's no instance it will create a new one and add
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it to the extractor list.
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"""
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ie = self._ies_instances.get(ie_key)
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if ie is None:
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ie = get_info_extractor(ie_key)()
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self.add_info_extractor(ie)
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return ie
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def add_default_info_extractors(self):
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"""
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Add the InfoExtractors returned by gen_extractors to the end of the list
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"""
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for ie in gen_extractors():
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self.add_info_extractor(ie)
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def add_post_processor(self, pp):
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"""Add a PostProcessor object to the end of the chain."""
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self._pps.append(pp)
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pp.set_downloader(self)
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def to_screen(self, message, skip_eol=False):
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"""Print message to stdout if not in quiet mode."""
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if not self.params.get('quiet', False):
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terminator = [u'\n', u''][skip_eol]
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output = message + terminator
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write_string(output, self._screen_file)
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def to_stderr(self, message):
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"""Print message to stderr."""
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assert type(message) == type(u'')
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output = message + u'\n'
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if 'b' in getattr(self._screen_file, 'mode', '') or sys.version_info[0] < 3: # Python 2 lies about the mode of sys.stdout/sys.stderr
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output = output.encode(preferredencoding())
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sys.stderr.write(output)
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def fixed_template(self):
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"""Checks if the output template is fixed."""
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return (re.search(u'(?u)%\\(.+?\\)s', self.params['outtmpl']) is None)
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def trouble(self, message=None, tb=None):
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"""Determine action to take when a download problem appears.
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Depending on if the downloader has been configured to ignore
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download errors or not, this method may throw an exception or
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not when errors are found, after printing the message.
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tb, if given, is additional traceback information.
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"""
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if message is not None:
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self.to_stderr(message)
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if self.params.get('verbose'):
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if tb is None:
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if sys.exc_info()[0]: # if .trouble has been called from an except block
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tb = u''
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if hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
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tb += u''.join(traceback.format_exception(*sys.exc_info()[1].exc_info))
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tb += compat_str(traceback.format_exc())
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else:
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tb_data = traceback.format_list(traceback.extract_stack())
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tb = u''.join(tb_data)
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self.to_stderr(tb)
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if not self.params.get('ignoreerrors', False):
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if sys.exc_info()[0] and hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
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exc_info = sys.exc_info()[1].exc_info
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else:
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exc_info = sys.exc_info()
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raise DownloadError(message, exc_info)
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self._download_retcode = 1
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def report_warning(self, message):
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'''
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Print the message to stderr, it will be prefixed with 'WARNING:'
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If stderr is a tty file the 'WARNING:' will be colored
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'''
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if sys.stderr.isatty() and os.name != 'nt':
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_msg_header=u'\033[0;33mWARNING:\033[0m'
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else:
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_msg_header=u'WARNING:'
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warning_message=u'%s %s' % (_msg_header,message)
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self.to_stderr(warning_message)
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def report_error(self, message, tb=None):
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'''
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Do the same as trouble, but prefixes the message with 'ERROR:', colored
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in red if stderr is a tty file.
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'''
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if sys.stderr.isatty() and os.name != 'nt':
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_msg_header = u'\033[0;31mERROR:\033[0m'
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else:
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_msg_header = u'ERROR:'
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error_message = u'%s %s' % (_msg_header, message)
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self.trouble(error_message, tb)
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def slow_down(self, start_time, byte_counter):
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"""Sleep if the download speed is over the rate limit."""
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rate_limit = self.params.get('ratelimit', None)
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if rate_limit is None or byte_counter == 0:
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return
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now = time.time()
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elapsed = now - start_time
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if elapsed <= 0.0:
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return
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speed = float(byte_counter) / elapsed
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if speed > rate_limit:
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time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
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def report_writedescription(self, descfn):
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""" Report that the description file is being written """
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self.to_screen(u'[info] Writing video description to: ' + descfn)
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def report_writesubtitles(self, sub_filename):
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""" Report that the subtitles file is being written """
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self.to_screen(u'[info] Writing video subtitles to: ' + sub_filename)
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def report_writeinfojson(self, infofn):
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""" Report that the metadata file has been written """
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self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
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def report_file_already_downloaded(self, file_name):
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"""Report file has already been fully downloaded."""
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try:
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self.to_screen(u'[download] %s has already been downloaded' % file_name)
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except (UnicodeEncodeError) as err:
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self.to_screen(u'[download] The file has already been downloaded')
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def increment_downloads(self):
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"""Increment the ordinal that assigns a number to each file."""
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self._num_downloads += 1
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def prepare_filename(self, info_dict):
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"""Generate the output filename."""
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try:
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template_dict = dict(info_dict)
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template_dict['epoch'] = int(time.time())
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autonumber_size = self.params.get('autonumber_size')
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if autonumber_size is None:
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autonumber_size = 5
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autonumber_templ = u'%0' + str(autonumber_size) + u'd'
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template_dict['autonumber'] = autonumber_templ % self._num_downloads
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if template_dict['playlist_index'] is not None:
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template_dict['playlist_index'] = u'%05d' % template_dict['playlist_index']
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sanitize = lambda k,v: sanitize_filename(
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u'NA' if v is None else compat_str(v),
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restricted=self.params.get('restrictfilenames'),
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is_id=(k==u'id'))
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template_dict = dict((k, sanitize(k, v)) for k,v in template_dict.items())
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filename = self.params['outtmpl'] % template_dict
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return filename
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except KeyError as err:
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self.report_error(u'Erroneous output template')
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return None
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except ValueError as err:
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self.report_error(u'Error in output template: ' + str(err) + u' (encoding: ' + repr(preferredencoding()) + ')')
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return None
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def _match_entry(self, info_dict):
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""" Returns None iff the file should be downloaded """
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title = info_dict['title']
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matchtitle = self.params.get('matchtitle', False)
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if matchtitle:
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if not re.search(matchtitle, title, re.IGNORECASE):
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return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
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rejecttitle = self.params.get('rejecttitle', False)
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if rejecttitle:
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if re.search(rejecttitle, title, re.IGNORECASE):
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return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
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date = info_dict.get('upload_date', None)
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if date is not None:
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dateRange = self.params.get('daterange', DateRange())
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if date not in dateRange:
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return u'[download] %s upload date is not in range %s' % (date_from_str(date).isoformat(), dateRange)
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if self.in_download_archive(info_dict):
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return (u'%(title)s) has already been recorded in archive'
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% info_dict)
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return None
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def extract_info(self, url, download=True, ie_key=None, extra_info={}):
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'''
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Returns a list with a dictionary for each video we find.
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If 'download', also downloads the videos.
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extra_info is a dict containing the extra values to add to each result
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'''
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if ie_key:
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ies = [self.get_info_extractor(ie_key)]
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else:
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ies = self._ies
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for ie in ies:
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if not ie.suitable(url):
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continue
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if not ie.working():
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self.report_warning(u'The program functionality for this site has been marked as broken, '
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u'and will probably not work.')
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try:
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ie_result = ie.extract(url)
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if ie_result is None: # Finished already (backwards compatibility; listformats and friends should be moved here)
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break
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if isinstance(ie_result, list):
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# Backwards compatibility: old IE result format
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for result in ie_result:
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result.update(extra_info)
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ie_result = {
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'_type': 'compat_list',
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'entries': ie_result,
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}
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else:
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ie_result.update(extra_info)
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if 'extractor' not in ie_result:
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ie_result['extractor'] = ie.IE_NAME
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return self.process_ie_result(ie_result, download=download)
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except ExtractorError as de: # An error we somewhat expected
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self.report_error(compat_str(de), de.format_traceback())
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break
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except Exception as e:
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if self.params.get('ignoreerrors', False):
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self.report_error(compat_str(e), tb=compat_str(traceback.format_exc()))
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break
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else:
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raise
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else:
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self.report_error(u'no suitable InfoExtractor: %s' % url)
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def process_ie_result(self, ie_result, download=True, extra_info={}):
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"""
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Take the result of the ie(may be modified) and resolve all unresolved
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references (URLs, playlist items).
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It will also download the videos if 'download'.
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Returns the resolved ie_result.
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"""
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result_type = ie_result.get('_type', 'video') # If not given we suppose it's a video, support the default old system
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if result_type == 'video':
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ie_result.update(extra_info)
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if 'playlist' not in ie_result:
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# It isn't part of a playlist
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ie_result['playlist'] = None
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ie_result['playlist_index'] = None
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if download:
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self.process_info(ie_result)
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return ie_result
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elif result_type == 'url':
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# We have to add extra_info to the results because it may be
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# contained in a playlist
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return self.extract_info(ie_result['url'],
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download,
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ie_key=ie_result.get('ie_key'),
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extra_info=extra_info)
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elif result_type == 'playlist':
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# We process each entry in the playlist
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playlist = ie_result.get('title', None) or ie_result.get('id', None)
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self.to_screen(u'[download] Downloading playlist: %s' % playlist)
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playlist_results = []
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n_all_entries = len(ie_result['entries'])
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playliststart = self.params.get('playliststart', 1) - 1
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playlistend = self.params.get('playlistend', -1)
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if playlistend == -1:
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entries = ie_result['entries'][playliststart:]
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else:
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entries = ie_result['entries'][playliststart:playlistend]
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n_entries = len(entries)
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self.to_screen(u"[%s] playlist '%s': Collected %d video ids (downloading %d of them)" %
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(ie_result['extractor'], playlist, n_all_entries, n_entries))
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for i,entry in enumerate(entries,1):
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self.to_screen(u'[download] Downloading video #%s of %s' %(i, n_entries))
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extra = {
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'playlist': playlist,
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'playlist_index': i + playliststart,
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}
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if not 'extractor' in entry:
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# We set the extractor, if it's an url it will be set then to
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# the new extractor, but if it's already a video we must make
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# sure it's present: see issue #877
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entry['extractor'] = ie_result['extractor']
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entry_result = self.process_ie_result(entry,
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download=download,
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extra_info=extra)
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playlist_results.append(entry_result)
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ie_result['entries'] = playlist_results
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return ie_result
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elif result_type == 'compat_list':
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def _fixup(r):
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r.setdefault('extractor', ie_result['extractor'])
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return r
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ie_result['entries'] = [
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self.process_ie_result(_fixup(r), download=download)
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for r in ie_result['entries']
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]
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return ie_result
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else:
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raise Exception('Invalid result type: %s' % result_type)
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def process_info(self, info_dict):
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"""Process a single resolved IE result."""
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assert info_dict.get('_type', 'video') == 'video'
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#We increment the download the download count here to match the previous behaviour.
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self.increment_downloads()
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info_dict['fulltitle'] = info_dict['title']
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if len(info_dict['title']) > 200:
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info_dict['title'] = info_dict['title'][:197] + u'...'
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# Keep for backwards compatibility
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info_dict['stitle'] = info_dict['title']
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if not 'format' in info_dict:
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info_dict['format'] = info_dict['ext']
|
|
|
|
reason = self._match_entry(info_dict)
|
|
if reason is not None:
|
|
self.to_screen(u'[download] ' + reason)
|
|
return
|
|
|
|
max_downloads = self.params.get('max_downloads')
|
|
if max_downloads is not None:
|
|
if self._num_downloads > int(max_downloads):
|
|
raise MaxDownloadsReached()
|
|
|
|
filename = self.prepare_filename(info_dict)
|
|
|
|
# Forced printings
|
|
if self.params.get('forcetitle', False):
|
|
compat_print(info_dict['title'])
|
|
if self.params.get('forceid', False):
|
|
compat_print(info_dict['id'])
|
|
if self.params.get('forceurl', False):
|
|
# For RTMP URLs, also include the playpath
|
|
compat_print(info_dict['url'] + info_dict.get('play_path', u''))
|
|
if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
|
|
compat_print(info_dict['thumbnail'])
|
|
if self.params.get('forcedescription', False) and 'description' in info_dict:
|
|
compat_print(info_dict['description'])
|
|
if self.params.get('forcefilename', False) and filename is not None:
|
|
compat_print(filename)
|
|
if self.params.get('forceformat', False):
|
|
compat_print(info_dict['format'])
|
|
|
|
# Do nothing else if in simulate mode
|
|
if self.params.get('simulate', False):
|
|
return
|
|
|
|
if filename is None:
|
|
return
|
|
|
|
try:
|
|
dn = os.path.dirname(encodeFilename(filename))
|
|
if dn != '' and not os.path.exists(dn):
|
|
os.makedirs(dn)
|
|
except (OSError, IOError) as err:
|
|
self.report_error(u'unable to create directory ' + compat_str(err))
|
|
return
|
|
|
|
if self.params.get('writedescription', False):
|
|
try:
|
|
descfn = filename + u'.description'
|
|
self.report_writedescription(descfn)
|
|
with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
|
|
descfile.write(info_dict['description'])
|
|
except (KeyError, TypeError):
|
|
self.report_warning(u'There\'s no description to write.')
|
|
except (OSError, IOError):
|
|
self.report_error(u'Cannot write description file ' + descfn)
|
|
return
|
|
|
|
subtitles_are_requested = any([self.params.get('writesubtitles', False),
|
|
self.params.get('writeautomaticsub')])
|
|
|
|
if subtitles_are_requested and 'subtitles' in info_dict and info_dict['subtitles']:
|
|
# subtitles download errors are already managed as troubles in relevant IE
|
|
# that way it will silently go on when used with unsupporting IE
|
|
subtitles = info_dict['subtitles']
|
|
sub_format = self.params.get('subtitlesformat')
|
|
for sub_lang in subtitles.keys():
|
|
sub = subtitles[sub_lang]
|
|
if sub is None:
|
|
continue
|
|
try:
|
|
sub_filename = subtitles_filename(filename, sub_lang, sub_format)
|
|
self.report_writesubtitles(sub_filename)
|
|
with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
|
|
subfile.write(sub)
|
|
except (OSError, IOError):
|
|
self.report_error(u'Cannot write subtitles file ' + descfn)
|
|
return
|
|
|
|
if self.params.get('writeinfojson', False):
|
|
infofn = filename + u'.info.json'
|
|
self.report_writeinfojson(infofn)
|
|
try:
|
|
json_info_dict = dict((k, v) for k,v in info_dict.items() if not k in ['urlhandle'])
|
|
write_json_file(json_info_dict, encodeFilename(infofn))
|
|
except (OSError, IOError):
|
|
self.report_error(u'Cannot write metadata to JSON file ' + infofn)
|
|
return
|
|
|
|
if self.params.get('writethumbnail', False):
|
|
if info_dict.get('thumbnail') is not None:
|
|
thumb_format = determine_ext(info_dict['thumbnail'], u'jpg')
|
|
thumb_filename = filename.rpartition('.')[0] + u'.' + thumb_format
|
|
self.to_screen(u'[%s] %s: Downloading thumbnail ...' %
|
|
(info_dict['extractor'], info_dict['id']))
|
|
try:
|
|
uf = compat_urllib_request.urlopen(info_dict['thumbnail'])
|
|
with open(thumb_filename, 'wb') as thumbf:
|
|
shutil.copyfileobj(uf, thumbf)
|
|
self.to_screen(u'[%s] %s: Writing thumbnail to: %s' %
|
|
(info_dict['extractor'], info_dict['id'], thumb_filename))
|
|
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
|
self.report_warning(u'Unable to download thumbnail "%s": %s' %
|
|
(info_dict['thumbnail'], compat_str(err)))
|
|
|
|
if not self.params.get('skip_download', False):
|
|
if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(filename)):
|
|
success = True
|
|
else:
|
|
try:
|
|
success = self.fd._do_download(filename, info_dict)
|
|
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
|
self.report_error(u'unable to download video data: %s' % str(err))
|
|
return
|
|
except (OSError, IOError) as err:
|
|
raise UnavailableVideoError(err)
|
|
except (ContentTooShortError, ) as err:
|
|
self.report_error(u'content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
|
|
return
|
|
|
|
if success:
|
|
try:
|
|
self.post_process(filename, info_dict)
|
|
except (PostProcessingError) as err:
|
|
self.report_error(u'postprocessing: %s' % str(err))
|
|
return
|
|
|
|
self.record_download_archive(info_dict)
|
|
|
|
def download(self, url_list):
|
|
"""Download a given list of URLs."""
|
|
if len(url_list) > 1 and self.fixed_template():
|
|
raise SameFileError(self.params['outtmpl'])
|
|
|
|
for url in url_list:
|
|
try:
|
|
#It also downloads the videos
|
|
videos = self.extract_info(url)
|
|
except UnavailableVideoError:
|
|
self.report_error(u'unable to download video')
|
|
except MaxDownloadsReached:
|
|
self.to_screen(u'[info] Maximum number of downloaded files reached.')
|
|
raise
|
|
|
|
return self._download_retcode
|
|
|
|
def post_process(self, filename, ie_info):
|
|
"""Run all the postprocessors on the given file."""
|
|
info = dict(ie_info)
|
|
info['filepath'] = filename
|
|
keep_video = None
|
|
for pp in self._pps:
|
|
try:
|
|
keep_video_wish,new_info = pp.run(info)
|
|
if keep_video_wish is not None:
|
|
if keep_video_wish:
|
|
keep_video = keep_video_wish
|
|
elif keep_video is None:
|
|
# No clear decision yet, let IE decide
|
|
keep_video = keep_video_wish
|
|
except PostProcessingError as e:
|
|
self.report_error(e.msg)
|
|
if keep_video is False and not self.params.get('keepvideo', False):
|
|
try:
|
|
self.to_screen(u'Deleting original file %s (pass -k to keep)' % filename)
|
|
os.remove(encodeFilename(filename))
|
|
except (IOError, OSError):
|
|
self.report_warning(u'Unable to remove downloaded video file')
|
|
|
|
def in_download_archive(self, info_dict):
|
|
fn = self.params.get('download_archive')
|
|
if fn is None:
|
|
return False
|
|
vid_id = info_dict['extractor'] + u' ' + info_dict['id']
|
|
try:
|
|
with locked_file(fn, 'r', encoding='utf-8') as archive_file:
|
|
for line in archive_file:
|
|
if line.strip() == vid_id:
|
|
return True
|
|
except IOError as ioe:
|
|
if ioe.errno != errno.ENOENT:
|
|
raise
|
|
return False
|
|
|
|
def record_download_archive(self, info_dict):
|
|
fn = self.params.get('download_archive')
|
|
if fn is None:
|
|
return
|
|
vid_id = info_dict['extractor'] + u' ' + info_dict['id']
|
|
with locked_file(fn, 'a', encoding='utf-8') as archive_file:
|
|
archive_file.write(vid_id + u'\n')
|