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Commit | Line | Data |
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a78e3a57 | 1 | import json |
c60ee3a2 | 2 | import time |
ac668111 | 3 | import urllib.error |
a78e3a57 | 4 | |
5 | from .fragment import FragmentFD | |
be5c1ae8 | 6 | from ..utils import ( |
7 | RegexNotFoundError, | |
8 | RetryManager, | |
9 | dict_get, | |
10 | int_or_none, | |
11 | try_get, | |
12 | ) | |
a78e3a57 | 13 | |
14 | ||
c60ee3a2 | 15 | class YoutubeLiveChatFD(FragmentFD): |
16 | """ Downloads YouTube live chats fragment by fragment """ | |
a78e3a57 | 17 | |
a78e3a57 | 18 | def real_download(self, filename, info_dict): |
19 | video_id = info_dict['video_id'] | |
20 | self.to_screen('[%s] Downloading live chat' % self.FD_NAME) | |
592b7485 | 21 | if not self.params.get('skip_download') and info_dict['protocol'] == 'youtube_live_chat': |
08d30158 | 22 | self.report_warning('Live chat download runs until the livestream ends. ' |
23 | 'If you wish to download the video simultaneously, run a separate yt-dlp instance') | |
a78e3a57 | 24 | |
25 | test = self.params.get('test', False) | |
26 | ||
27 | ctx = { | |
28 | 'filename': filename, | |
29 | 'live': True, | |
30 | 'total_frags': None, | |
31 | } | |
32 | ||
c487cf00 | 33 | from ..extractor.youtube import YoutubeBaseInfoExtractor |
34 | ||
35 | ie = YoutubeBaseInfoExtractor(self.ydl) | |
a78e3a57 | 36 | |
c60ee3a2 | 37 | start_time = int(time.time() * 1000) |
38 | ||
273762c8 | 39 | def dl_fragment(url, data=None, headers=None): |
40 | http_headers = info_dict.get('http_headers', {}) | |
41 | if headers: | |
42 | http_headers = http_headers.copy() | |
43 | http_headers.update(headers) | |
44 | return self._download_fragment(ctx, url, info_dict, http_headers, data) | |
a78e3a57 | 45 | |
c60ee3a2 | 46 | def parse_actions_replay(live_chat_continuation): |
c2603313 | 47 | offset = continuation_id = click_tracking_params = None |
c60ee3a2 | 48 | processed_fragment = bytearray() |
49 | for action in live_chat_continuation.get('actions', []): | |
50 | if 'replayChatItemAction' in action: | |
51 | replay_chat_item_action = action['replayChatItemAction'] | |
52 | offset = int(replay_chat_item_action['videoOffsetTimeMsec']) | |
53 | processed_fragment.extend( | |
0f06bcd7 | 54 | json.dumps(action, ensure_ascii=False).encode() + b'\n') |
c60ee3a2 | 55 | if offset is not None: |
c2603313 | 56 | continuation = try_get( |
c60ee3a2 | 57 | live_chat_continuation, |
c2603313 | 58 | lambda x: x['continuations'][0]['liveChatReplayContinuationData'], dict) |
59 | if continuation: | |
60 | continuation_id = continuation.get('continuation') | |
61 | click_tracking_params = continuation.get('clickTrackingParams') | |
c60ee3a2 | 62 | self._append_fragment(ctx, processed_fragment) |
c2603313 | 63 | return continuation_id, offset, click_tracking_params |
c60ee3a2 | 64 | |
d534c452 | 65 | def try_refresh_replay_beginning(live_chat_continuation): |
66 | # choose the second option that contains the unfiltered live chat replay | |
c2603313 | 67 | refresh_continuation = try_get( |
d534c452 | 68 | live_chat_continuation, |
c2603313 | 69 | lambda x: x['header']['liveChatHeaderRenderer']['viewSelector']['sortFilterSubMenuRenderer']['subMenuItems'][1]['continuation']['reloadContinuationData'], dict) |
70 | if refresh_continuation: | |
d534c452 | 71 | # no data yet but required to call _append_fragment |
72 | self._append_fragment(ctx, b'') | |
c2603313 | 73 | refresh_continuation_id = refresh_continuation.get('continuation') |
74 | offset = 0 | |
75 | click_tracking_params = refresh_continuation.get('trackingParams') | |
76 | return refresh_continuation_id, offset, click_tracking_params | |
d534c452 | 77 | return parse_actions_replay(live_chat_continuation) |
78 | ||
c60ee3a2 | 79 | live_offset = 0 |
80 | ||
81 | def parse_actions_live(live_chat_continuation): | |
82 | nonlocal live_offset | |
c2603313 | 83 | continuation_id = click_tracking_params = None |
c60ee3a2 | 84 | processed_fragment = bytearray() |
85 | for action in live_chat_continuation.get('actions', []): | |
86 | timestamp = self.parse_live_timestamp(action) | |
87 | if timestamp is not None: | |
88 | live_offset = timestamp - start_time | |
89 | # compatibility with replay format | |
90 | pseudo_action = { | |
91 | 'replayChatItemAction': {'actions': [action]}, | |
92 | 'videoOffsetTimeMsec': str(live_offset), | |
93 | 'isLive': True, | |
94 | } | |
95 | processed_fragment.extend( | |
0f06bcd7 | 96 | json.dumps(pseudo_action, ensure_ascii=False).encode() + b'\n') |
c60ee3a2 | 97 | continuation_data_getters = [ |
98 | lambda x: x['continuations'][0]['invalidationContinuationData'], | |
99 | lambda x: x['continuations'][0]['timedContinuationData'], | |
100 | ] | |
101 | continuation_data = try_get(live_chat_continuation, continuation_data_getters, dict) | |
102 | if continuation_data: | |
103 | continuation_id = continuation_data.get('continuation') | |
c2603313 | 104 | click_tracking_params = continuation_data.get('clickTrackingParams') |
c60ee3a2 | 105 | timeout_ms = int_or_none(continuation_data.get('timeoutMs')) |
106 | if timeout_ms is not None: | |
107 | time.sleep(timeout_ms / 1000) | |
108 | self._append_fragment(ctx, processed_fragment) | |
c2603313 | 109 | return continuation_id, live_offset, click_tracking_params |
c60ee3a2 | 110 | |
d534c452 | 111 | def download_and_parse_fragment(url, frag_index, request_data=None, headers=None): |
be5c1ae8 | 112 | for retry in RetryManager(self.params.get('fragment_retries'), self.report_retry, frag_index=frag_index): |
82e3f6eb | 113 | try: |
d71fd412 | 114 | success = dl_fragment(url, request_data, headers) |
82e3f6eb | 115 | if not success: |
c2603313 | 116 | return False, None, None, None |
d71fd412 | 117 | raw_fragment = self._read_fragment(ctx) |
d534c452 | 118 | try: |
11f9be09 | 119 | data = ie.extract_yt_initial_data(video_id, raw_fragment.decode('utf-8', 'replace')) |
d534c452 | 120 | except RegexNotFoundError: |
121 | data = None | |
122 | if not data: | |
123 | data = json.loads(raw_fragment) | |
82e3f6eb | 124 | live_chat_continuation = try_get( |
125 | data, | |
126 | lambda x: x['continuationContents']['liveChatContinuation'], dict) or {} | |
be5c1ae8 | 127 | |
128 | func = (info_dict['protocol'] == 'youtube_live_chat' and parse_actions_live | |
129 | or frag_index == 1 and try_refresh_replay_beginning | |
130 | or parse_actions_replay) | |
131 | return (True, *func(live_chat_continuation)) | |
ac668111 | 132 | except urllib.error.HTTPError as err: |
be5c1ae8 | 133 | retry.error = err |
134 | continue | |
135 | return False, None, None, None | |
82e3f6eb | 136 | |
3ba7740d | 137 | self._prepare_and_start_frag_download(ctx, info_dict) |
a78e3a57 | 138 | |
d71fd412 | 139 | success = dl_fragment(info_dict['url']) |
a78e3a57 | 140 | if not success: |
141 | return False | |
d71fd412 | 142 | raw_fragment = self._read_fragment(ctx) |
273762c8 | 143 | try: |
11f9be09 | 144 | data = ie.extract_yt_initial_data(video_id, raw_fragment.decode('utf-8', 'replace')) |
273762c8 | 145 | except RegexNotFoundError: |
146 | return False | |
82e3f6eb | 147 | continuation_id = try_get( |
148 | data, | |
149 | lambda x: x['contents']['twoColumnWatchNextResults']['conversationBar']['liveChatRenderer']['continuations'][0]['reloadContinuationData']['continuation']) | |
a78e3a57 | 150 | # no data yet but required to call _append_fragment |
151 | self._append_fragment(ctx, b'') | |
152 | ||
11f9be09 | 153 | ytcfg = ie.extract_ytcfg(video_id, raw_fragment.decode('utf-8', 'replace')) |
273762c8 | 154 | |
155 | if not ytcfg: | |
156 | return False | |
157 | api_key = try_get(ytcfg, lambda x: x['INNERTUBE_API_KEY']) | |
158 | innertube_context = try_get(ytcfg, lambda x: x['INNERTUBE_CONTEXT']) | |
159 | if not api_key or not innertube_context: | |
160 | return False | |
c60ee3a2 | 161 | visitor_data = try_get(innertube_context, lambda x: x['client']['visitorData'], str) |
162 | if info_dict['protocol'] == 'youtube_live_chat_replay': | |
163 | url = 'https://www.youtube.com/youtubei/v1/live_chat/get_live_chat_replay?key=' + api_key | |
d534c452 | 164 | chat_page_url = 'https://www.youtube.com/live_chat_replay?continuation=' + continuation_id |
c60ee3a2 | 165 | elif info_dict['protocol'] == 'youtube_live_chat': |
166 | url = 'https://www.youtube.com/youtubei/v1/live_chat/get_live_chat?key=' + api_key | |
d534c452 | 167 | chat_page_url = 'https://www.youtube.com/live_chat?continuation=' + continuation_id |
273762c8 | 168 | |
82e3f6eb | 169 | frag_index = offset = 0 |
c2603313 | 170 | click_tracking_params = None |
a78e3a57 | 171 | while continuation_id is not None: |
82e3f6eb | 172 | frag_index += 1 |
273762c8 | 173 | request_data = { |
174 | 'context': innertube_context, | |
175 | 'continuation': continuation_id, | |
176 | } | |
177 | if frag_index > 1: | |
178 | request_data['currentPlayerState'] = {'playerOffsetMs': str(max(offset - 5000, 0))} | |
c2603313 | 179 | if click_tracking_params: |
180 | request_data['context']['clickTracking'] = {'clickTrackingParams': click_tracking_params} | |
99e9e001 | 181 | headers = ie.generate_api_headers(ytcfg=ytcfg, visitor_data=visitor_data) |
d534c452 | 182 | headers.update({'content-type': 'application/json'}) |
0f06bcd7 | 183 | fragment_request_data = json.dumps(request_data, ensure_ascii=False).encode() + b'\n' |
c2603313 | 184 | success, continuation_id, offset, click_tracking_params = download_and_parse_fragment( |
d534c452 | 185 | url, frag_index, fragment_request_data, headers) |
186 | else: | |
c2603313 | 187 | success, continuation_id, offset, click_tracking_params = download_and_parse_fragment( |
188 | chat_page_url, frag_index) | |
82e3f6eb | 189 | if not success: |
190 | return False | |
191 | if test: | |
a78e3a57 | 192 | break |
193 | ||
3ba7740d | 194 | self._finish_frag_download(ctx, info_dict) |
a78e3a57 | 195 | return True |
c60ee3a2 | 196 | |
197 | @staticmethod | |
198 | def parse_live_timestamp(action): | |
199 | action_content = dict_get( | |
200 | action, | |
201 | ['addChatItemAction', 'addLiveChatTickerItemAction', 'addBannerToLiveChatCommand']) | |
202 | if not isinstance(action_content, dict): | |
203 | return None | |
204 | item = dict_get(action_content, ['item', 'bannerRenderer']) | |
205 | if not isinstance(item, dict): | |
206 | return None | |
207 | renderer = dict_get(item, [ | |
208 | # text | |
209 | 'liveChatTextMessageRenderer', 'liveChatPaidMessageRenderer', | |
210 | 'liveChatMembershipItemRenderer', 'liveChatPaidStickerRenderer', | |
211 | # ticker | |
212 | 'liveChatTickerPaidMessageItemRenderer', | |
213 | 'liveChatTickerSponsorItemRenderer', | |
214 | # banner | |
215 | 'liveChatBannerRenderer', | |
216 | ]) | |
217 | if not isinstance(renderer, dict): | |
218 | return None | |
219 | parent_item_getters = [ | |
220 | lambda x: x['showItemEndpoint']['showLiveChatItemEndpoint']['renderer'], | |
221 | lambda x: x['contents'], | |
222 | ] | |
223 | parent_item = try_get(renderer, parent_item_getters, dict) | |
224 | if parent_item: | |
225 | renderer = dict_get(parent_item, [ | |
226 | 'liveChatTextMessageRenderer', 'liveChatPaidMessageRenderer', | |
227 | 'liveChatMembershipItemRenderer', 'liveChatPaidStickerRenderer', | |
228 | ]) | |
229 | if not isinstance(renderer, dict): | |
230 | return None | |
231 | return int_or_none(renderer.get('timestampUsec'), 1000) |