
This solution still makes sure the video doesn't jump in height when it loads, and makes it so the video scales down properly in aspect ratio as the browser window is made narrower.
568 lines
22 KiB
Python
568 lines
22 KiB
Python
from youtube import yt_app
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from youtube import util, comments, local_playlist, yt_data_extract
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import settings
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from flask import request
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import flask
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import json
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import html
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import gevent
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import os
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import math
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import traceback
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import urllib
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import re
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import urllib3.exceptions
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try:
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with open(os.path.join(settings.data_dir, 'decrypt_function_cache.json'), 'r') as f:
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decrypt_cache = json.loads(f.read())['decrypt_cache']
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except FileNotFoundError:
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decrypt_cache = {}
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def get_video_sources(info, tor_bypass=False):
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video_sources = []
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if (not settings.theater_mode) or (settings.route_tor == 2) or tor_bypass:
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max_resolution = 360
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else:
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max_resolution = settings.default_resolution
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for fmt in info['formats']:
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if not all(fmt[attr] for attr in ('quality', 'width', 'ext', 'url')):
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continue
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if fmt['acodec'] and fmt['vcodec'] and fmt['height'] <= max_resolution:
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video_sources.append({
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'src': fmt['url'],
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'type': 'video/' + fmt['ext'],
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'quality': fmt['quality'],
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'height': fmt['height'],
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'width': fmt['width'],
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})
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#### order the videos sources so the preferred resolution is first ###
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video_sources.sort(key=lambda source: source['quality'], reverse=True)
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return video_sources
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def make_caption_src(info, lang, auto=False, trans_lang=None):
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label = lang
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if auto:
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label += ' (Automatic)'
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if trans_lang:
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label += ' -> ' + trans_lang
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return {
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'url': '/' + yt_data_extract.get_caption_url(info, lang, 'vtt', auto, trans_lang),
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'label': label,
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'srclang': trans_lang[0:2] if trans_lang else lang[0:2],
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'on': False,
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}
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def lang_in(lang, sequence):
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'''Tests if the language is in sequence, with e.g. en and en-US considered the same'''
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if lang is None:
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return False
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lang = lang[0:2]
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return lang in (l[0:2] for l in sequence)
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def lang_eq(lang1, lang2):
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'''Tests if two iso 639-1 codes are equal, with en and en-US considered the same.
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Just because the codes are equal does not mean the dialects are mutually intelligible, but this will have to do for now without a complex language model'''
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if lang1 is None or lang2 is None:
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return False
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return lang1[0:2] == lang2[0:2]
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def equiv_lang_in(lang, sequence):
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'''Extracts a language in sequence which is equivalent to lang.
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e.g. if lang is en, extracts en-GB from sequence.
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Necessary because if only a specific variant like en-GB is available, can't ask Youtube for simply en. Need to get the available variant.'''
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lang = lang[0:2]
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for l in sequence:
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if l[0:2] == lang:
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return l
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return None
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def get_subtitle_sources(info):
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'''Returns these sources, ordered from least to most intelligible:
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native_video_lang (Automatic)
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foreign_langs (Manual)
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native_video_lang (Automatic) -> pref_lang
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foreign_langs (Manual) -> pref_lang
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native_video_lang (Manual) -> pref_lang
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pref_lang (Automatic)
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pref_lang (Manual)'''
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sources = []
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pref_lang = settings.subtitles_language
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native_video_lang = None
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if info['automatic_caption_languages']:
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native_video_lang = info['automatic_caption_languages'][0]
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highest_fidelity_is_manual = False
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# Sources are added in very specific order outlined above
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# More intelligible sources are put further down to avoid browser bug when there are too many languages
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# (in firefox, it is impossible to select a language near the top of the list because it is cut off)
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# native_video_lang (Automatic)
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if native_video_lang and not lang_eq(native_video_lang, pref_lang):
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sources.append(make_caption_src(info, native_video_lang, auto=True))
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# foreign_langs (Manual)
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for lang in info['manual_caption_languages']:
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if not lang_eq(lang, pref_lang):
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sources.append(make_caption_src(info, lang))
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if (lang_in(pref_lang, info['translation_languages'])
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and not lang_in(pref_lang, info['automatic_caption_languages'])
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and not lang_in(pref_lang, info['manual_caption_languages'])):
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# native_video_lang (Automatic) -> pref_lang
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if native_video_lang and not lang_eq(pref_lang, native_video_lang):
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sources.append(make_caption_src(info, native_video_lang, auto=True, trans_lang=pref_lang))
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# foreign_langs (Manual) -> pref_lang
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for lang in info['manual_caption_languages']:
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if not lang_eq(lang, native_video_lang) and not lang_eq(lang, pref_lang):
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sources.append(make_caption_src(info, lang, trans_lang=pref_lang))
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# native_video_lang (Manual) -> pref_lang
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if lang_in(native_video_lang, info['manual_caption_languages']):
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sources.append(make_caption_src(info, native_video_lang, trans_lang=pref_lang))
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# pref_lang (Automatic)
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if lang_in(pref_lang, info['automatic_caption_languages']):
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sources.append(make_caption_src(info, equiv_lang_in(pref_lang, info['automatic_caption_languages']), auto=True))
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# pref_lang (Manual)
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if lang_in(pref_lang, info['manual_caption_languages']):
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sources.append(make_caption_src(info, equiv_lang_in(pref_lang, info['manual_caption_languages'])))
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highest_fidelity_is_manual = True
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if sources and sources[-1]['srclang'] == pref_lang:
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# set as on by default since it's manual a default-on subtitles mode is in settings
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if highest_fidelity_is_manual and settings.subtitles_mode > 0:
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sources[-1]['on'] = True
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# set as on by default since settings indicate to set it as such even if it's not manual
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elif settings.subtitles_mode == 2:
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sources[-1]['on'] = True
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if len(sources) == 0:
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assert len(info['automatic_caption_languages']) == 0 and len(info['manual_caption_languages']) == 0
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return sources
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def get_ordered_music_list_attributes(music_list):
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# get the set of attributes which are used by atleast 1 track
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# so there isn't an empty, extraneous album column which no tracks use, for example
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used_attributes = set()
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for track in music_list:
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used_attributes = used_attributes | track.keys()
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# now put them in the right order
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ordered_attributes = []
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for attribute in ('Artist', 'Title', 'Album'):
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if attribute.lower() in used_attributes:
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ordered_attributes.append(attribute)
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return ordered_attributes
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def save_decrypt_cache():
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try:
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f = open(os.path.join(settings.data_dir, 'decrypt_function_cache.json'), 'w')
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except FileNotFoundError:
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os.makedirs(settings.data_dir)
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f = open(os.path.join(settings.data_dir, 'decrypt_function_cache.json'), 'w')
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f.write(json.dumps({'version': 1, 'decrypt_cache':decrypt_cache}, indent=4, sort_keys=True))
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f.close()
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def decrypt_signatures(info):
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'''return error string, or False if no errors'''
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if not yt_data_extract.requires_decryption(info):
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return False
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if not info['player_name']:
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return 'Could not find player name'
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if not info['base_js']:
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return 'Failed to find base.js'
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player_name = info['player_name']
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if player_name in decrypt_cache:
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print('Using cached decryption function for: ' + player_name)
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info['decryption_function'] = decrypt_cache[player_name]
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else:
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base_js = util.fetch_url(info['base_js'], debug_name='base.js', report_text='Fetched player ' + player_name)
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base_js = base_js.decode('utf-8')
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err = yt_data_extract.extract_decryption_function(info, base_js)
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if err:
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return err
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decrypt_cache[player_name] = info['decryption_function']
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save_decrypt_cache()
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err = yt_data_extract.decrypt_signatures(info)
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return err
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headers = (
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('Accept', '*/*'),
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('Accept-Language', 'en-US,en;q=0.5'),
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('X-YouTube-Client-Name', '2'),
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('X-YouTube-Client-Version', '2.20180830'),
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) + util.mobile_ua
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def extract_info(video_id, use_invidious, playlist_id=None, index=None):
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# bpctr=9999999999 will bypass are-you-sure dialogs for controversial
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# videos
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url = 'https://m.youtube.com/watch?v=' + video_id + '&pbj=1&bpctr=9999999999'
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if playlist_id:
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url += '&list=' + playlist_id
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if index:
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url += '&index=' + index
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polymer_json = util.fetch_url(url, headers=headers, debug_name='watch')
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polymer_json = polymer_json.decode('utf-8')
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# TODO: Decide whether this should be done in yt_data_extract.extract_watch_info
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try:
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polymer_json = json.loads(polymer_json)
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except json.decoder.JSONDecodeError:
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traceback.print_exc()
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return {'error': 'Failed to parse json response'}
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info = yt_data_extract.extract_watch_info(polymer_json)
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# age restriction bypass
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if info['age_restricted']:
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print('Fetching age restriction bypass page')
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data = {
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'video_id': video_id,
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'eurl': 'https://youtube.googleapis.com/v/' + video_id,
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}
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url = 'https://www.youtube.com/get_video_info?' + urllib.parse.urlencode(data)
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video_info_page = util.fetch_url(url, debug_name='get_video_info', report_text='Fetched age restriction bypass page').decode('utf-8')
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yt_data_extract.update_with_age_restricted_info(info, video_info_page)
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# signature decryption
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decryption_error = decrypt_signatures(info)
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if decryption_error:
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decryption_error = 'Error decrypting url signatures: ' + decryption_error
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info['playability_error'] = decryption_error
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# check if urls ready (non-live format) in former livestream
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# urls not ready if all of them have no filesize
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if info['was_live']:
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info['urls_ready'] = False
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for fmt in info['formats']:
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if fmt['file_size'] is not None:
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info['urls_ready'] = True
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else:
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info['urls_ready'] = True
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# livestream urls
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# sometimes only the livestream urls work soon after the livestream is over
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if (info['hls_manifest_url']
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and (info['live'] or not info['formats'] or not info['urls_ready'])
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):
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manifest = util.fetch_url(info['hls_manifest_url'],
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debug_name='hls_manifest.m3u8',
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report_text='Fetched hls manifest'
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).decode('utf-8')
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info['hls_formats'], err = yt_data_extract.extract_hls_formats(manifest)
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if not err:
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info['playability_error'] = None
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for fmt in info['hls_formats']:
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fmt['video_quality'] = video_quality_string(fmt)
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else:
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info['hls_formats'] = []
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# check for 403. Unnecessary for tor video routing b/c ip address is same
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info['invidious_used'] = False
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info['invidious_reload_button'] = False
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info['tor_bypass_used'] = False
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if (settings.route_tor == 1
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and info['formats'] and info['formats'][0]['url']):
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try:
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response = util.head(info['formats'][0]['url'],
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report_text='Checked for URL access')
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except urllib3.exceptions.HTTPError:
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print('Error while checking for URL access:\n')
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traceback.print_exc()
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return info
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if response.status == 403:
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print('Access denied (403) for video urls.')
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print('Routing video through Tor')
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info['tor_bypass_used'] = True
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for fmt in info['formats']:
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fmt['url'] += '&use_tor=1'
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elif 300 <= response.status < 400:
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print('Error: exceeded max redirects while checking video URL')
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return info
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def video_quality_string(format):
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if format['vcodec']:
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result =str(format['width'] or '?') + 'x' + str(format['height'] or '?')
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if format['fps']:
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result += ' ' + str(format['fps']) + 'fps'
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return result
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elif format['acodec']:
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return 'audio only'
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return '?'
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def audio_quality_string(format):
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if format['acodec']:
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result = str(format['audio_bitrate'] or '?') + 'k'
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if format['audio_sample_rate']:
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result += ' ' + str(format['audio_sample_rate']) + ' Hz'
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return result
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elif format['vcodec']:
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return 'video only'
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return '?'
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# from https://github.com/ytdl-org/youtube-dl/blob/master/youtube_dl/utils.py
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def format_bytes(bytes):
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if bytes is None:
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return 'N/A'
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if type(bytes) is str:
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bytes = float(bytes)
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if bytes == 0.0:
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exponent = 0
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else:
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exponent = int(math.log(bytes, 1024.0))
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suffix = ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'][exponent]
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converted = float(bytes) / float(1024 ** exponent)
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return '%.2f%s' % (converted, suffix)
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time_table = {'h': 3600, 'm': 60, 's': 1}
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@yt_app.route('/watch')
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@yt_app.route('/embed')
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@yt_app.route('/embed/<video_id>')
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def get_watch_page(video_id=None):
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video_id = request.args.get('v') or video_id
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if not video_id:
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return flask.render_template('error.html', error_message='Missing video id'), 404
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if len(video_id) < 11:
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return flask.render_template('error.html', error_message='Incomplete video id (too short): ' + video_id), 404
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time_start_str = request.args.get('t', '0s')
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time_start = 0
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if re.fullmatch(r'(\d+(h|m|s))+', time_start_str):
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for match in re.finditer(r'(\d+)(h|m|s)', time_start_str):
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time_start += int(match.group(1))*time_table[match.group(2)]
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elif re.fullmatch(r'\d+', time_start_str):
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time_start = int(time_start_str)
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lc = request.args.get('lc', '')
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playlist_id = request.args.get('list')
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index = request.args.get('index')
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use_invidious = bool(int(request.args.get('use_invidious', '1')))
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tasks = (
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gevent.spawn(comments.video_comments, video_id, int(settings.default_comment_sorting), lc=lc ),
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gevent.spawn(extract_info, video_id, use_invidious, playlist_id=playlist_id,
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index=index)
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)
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gevent.joinall(tasks)
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util.check_gevent_exceptions(tasks[1])
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comments_info, info = tasks[0].value, tasks[1].value
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if info['error']:
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return flask.render_template('error.html', error_message = info['error'])
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video_info = {
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"duration": util.seconds_to_timestamp(info["duration"] or 0),
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"id": info['id'],
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"title": info['title'],
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"author": info['author'],
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}
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# prefix urls, and other post-processing not handled by yt_data_extract
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for item in info['related_videos']:
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util.prefix_urls(item)
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util.add_extra_html_info(item)
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if info['playlist']:
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playlist_id = info['playlist']['id']
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for item in info['playlist']['items']:
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util.prefix_urls(item)
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util.add_extra_html_info(item)
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if playlist_id:
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item['url'] += '&list=' + playlist_id
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if item['index']:
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item['url'] += '&index=' + str(item['index'])
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info['playlist']['author_url'] = util.prefix_url(
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info['playlist']['author_url'])
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# Don't prefix hls_formats for now because the urls inside the manifest
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# would need to be prefixed as well.
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for fmt in info['formats']:
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fmt['url'] = util.prefix_url(fmt['url'])
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if settings.gather_googlevideo_domains:
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with open(os.path.join(settings.data_dir, 'googlevideo-domains.txt'), 'a+', encoding='utf-8') as f:
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url = info['formats'][0]['url']
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subdomain = url[0:url.find(".googlevideo.com")]
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f.write(subdomain + "\n")
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download_formats = []
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for format in (info['formats'] + info['hls_formats']):
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if format['acodec'] and format['vcodec']:
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codecs_string = format['acodec'] + ', ' + format['vcodec']
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else:
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codecs_string = format['acodec'] or format['vcodec'] or '?'
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download_formats.append({
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'url': format['url'],
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'ext': format['ext'] or '?',
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'audio_quality': audio_quality_string(format),
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'video_quality': video_quality_string(format),
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'file_size': format_bytes(format['file_size']),
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'codecs': codecs_string,
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})
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video_sources = get_video_sources(info, tor_bypass=info['tor_bypass_used'])
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video_height = yt_data_extract.deep_get(video_sources, 0, 'height', default=360)
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video_width = yt_data_extract.deep_get(video_sources, 0, 'width', default=640)
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# 1 second per pixel, or the actual video width
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theater_video_target_width = max(640, info['duration'] or 0, video_width)
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# Check for false determination of disabled comments, which comes from
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# the watch page. But if we got comments in the separate request for those,
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# then the determination is wrong.
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if info['comments_disabled'] and len(comments_info['comments']) != 0:
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info['comments_disabled'] = False
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print('Warning: False determination that comments are disabled')
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print('Comment count:', info['comment_count'])
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info['comment_count'] = None # hack to make it obvious there's a bug
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# captions and transcript
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subtitle_sources = get_subtitle_sources(info)
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other_downloads = []
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for source in subtitle_sources:
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best_caption_parse = urllib.parse.urlparse(
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source['url'].lstrip('/'))
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transcript_url = (util.URL_ORIGIN
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+ '/watch/transcript'
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+ best_caption_parse.path
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+ '?' + best_caption_parse.query)
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other_downloads.append({
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'label': 'Video Transcript: ' + source['label'],
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'ext': 'txt',
|
|
'url': transcript_url
|
|
})
|
|
|
|
return flask.render_template('watch.html',
|
|
header_playlist_names = local_playlist.get_playlist_names(),
|
|
uploader_channel_url = ('/' + info['author_url']) if info['author_url'] else '',
|
|
time_published = info['time_published'],
|
|
view_count = (lambda x: '{:,}'.format(x) if x is not None else "")(info.get("view_count", None)),
|
|
like_count = (lambda x: '{:,}'.format(x) if x is not None else "")(info.get("like_count", None)),
|
|
dislike_count = (lambda x: '{:,}'.format(x) if x is not None else "")(info.get("dislike_count", None)),
|
|
download_formats = download_formats,
|
|
other_downloads = other_downloads,
|
|
video_info = json.dumps(video_info),
|
|
video_sources = video_sources,
|
|
hls_formats = info['hls_formats'],
|
|
subtitle_sources = subtitle_sources,
|
|
related = info['related_videos'],
|
|
playlist = info['playlist'],
|
|
music_list = info['music_list'],
|
|
music_attributes = get_ordered_music_list_attributes(info['music_list']),
|
|
comments_info = comments_info,
|
|
comment_count = info['comment_count'],
|
|
comments_disabled = info['comments_disabled'],
|
|
|
|
settings = settings,
|
|
|
|
video_height = video_height,
|
|
video_width = video_width,
|
|
theater_video_target_width = theater_video_target_width,
|
|
|
|
title = info['title'],
|
|
uploader = info['author'],
|
|
description = info['description'],
|
|
unlisted = info['unlisted'],
|
|
limited_state = info['limited_state'],
|
|
age_restricted = info['age_restricted'],
|
|
live = info['live'],
|
|
playability_error = info['playability_error'],
|
|
|
|
allowed_countries = info['allowed_countries'],
|
|
ip_address = info['ip_address'] if settings.route_tor else None,
|
|
invidious_used = info['invidious_used'],
|
|
invidious_reload_button = info['invidious_reload_button'],
|
|
video_url = util.URL_ORIGIN + '/watch?v=' + video_id,
|
|
time_start = time_start,
|
|
)
|
|
|
|
|
|
@yt_app.route('/api/<path:dummy>')
|
|
def get_captions(dummy):
|
|
result = util.fetch_url('https://www.youtube.com' + request.full_path)
|
|
result = result.replace(b"align:start position:0%", b"")
|
|
return result
|
|
|
|
|
|
times_reg = re.compile(r'^\d\d:\d\d:\d\d\.\d\d\d --> \d\d:\d\d:\d\d\.\d\d\d.*$')
|
|
inner_timestamp_removal_reg = re.compile(r'<[^>]+>')
|
|
@yt_app.route('/watch/transcript/<path:caption_path>')
|
|
def get_transcript(caption_path):
|
|
try:
|
|
captions = util.fetch_url('https://www.youtube.com/'
|
|
+ caption_path
|
|
+ '?' + request.environ['QUERY_STRING']).decode('utf-8')
|
|
except util.FetchError as e:
|
|
msg = ('Error retrieving captions: ' + str(e) + '\n\n'
|
|
+ 'The caption url may have expired.')
|
|
print(msg)
|
|
return flask.Response(msg,
|
|
status = e.code,
|
|
mimetype='text/plain;charset=UTF-8')
|
|
|
|
lines = captions.splitlines()
|
|
segments = []
|
|
|
|
# skip captions file header
|
|
i = 0
|
|
while lines[i] != '':
|
|
i += 1
|
|
|
|
current_segment = None
|
|
while i < len(lines):
|
|
line = lines[i]
|
|
if line == '':
|
|
if ((current_segment is not None)
|
|
and (current_segment['begin'] is not None)):
|
|
segments.append(current_segment)
|
|
current_segment = {
|
|
'begin': None,
|
|
'end': None,
|
|
'lines': [],
|
|
}
|
|
elif times_reg.fullmatch(line.rstrip()):
|
|
current_segment['begin'], current_segment['end'] = line.split(' --> ')
|
|
else:
|
|
current_segment['lines'].append(
|
|
inner_timestamp_removal_reg.sub('', line))
|
|
i += 1
|
|
|
|
# if automatic captions, but not translated
|
|
if request.args.get('kind') == 'asr' and not request.args.get('tlang'):
|
|
# Automatic captions repeat content. The new segment is displayed
|
|
# on the bottom row; the old one is displayed on the top row.
|
|
# So grab the bottom row only
|
|
for seg in segments:
|
|
seg['text'] = seg['lines'][1]
|
|
else:
|
|
for seg in segments:
|
|
seg['text'] = ' '.join(map(str.rstrip, seg['lines']))
|
|
|
|
result = ''
|
|
for seg in segments:
|
|
if seg['text'] != ' ':
|
|
result += seg['begin'] + ' ' + seg['text'] + '\r\n'
|
|
|
|
return flask.Response(result.encode('utf-8'),
|
|
mimetype='text/plain;charset=UTF-8')
|
|
|
|
|
|
|