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Commit | Line | Data |
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ef58c476 | 1 | from hashlib import sha256 |
2 | import itertools | |
7a340e0d NA |
3 | import json |
4 | import re | |
ef58c476 | 5 | import time |
7a340e0d NA |
6 | |
7 | from .ffmpeg import FFmpegPostProcessor | |
8 | from ..compat import compat_urllib_parse_urlencode, compat_HTTPError | |
e6f21b3d | 9 | from ..utils import PostProcessingError, network_exceptions, sanitized_Request |
7a340e0d NA |
10 | |
11 | ||
12 | class SponsorBlockPP(FFmpegPostProcessor): | |
13 | ||
14 | EXTRACTORS = { | |
15 | 'Youtube': 'YouTube', | |
16 | } | |
17 | CATEGORIES = { | |
18 | 'sponsor': 'Sponsor', | |
19 | 'intro': 'Intermission/Intro Animation', | |
20 | 'outro': 'Endcards/Credits', | |
21 | 'selfpromo': 'Unpaid/Self Promotion', | |
22 | 'interaction': 'Interaction Reminder', | |
23 | 'preview': 'Preview/Recap', | |
24 | 'music_offtopic': 'Non-Music Section' | |
25 | } | |
26 | ||
27 | def __init__(self, downloader, categories=None, api='https://sponsor.ajay.app'): | |
28 | FFmpegPostProcessor.__init__(self, downloader) | |
29 | self._categories = tuple(categories or self.CATEGORIES.keys()) | |
30 | self._API_URL = api if re.match('^https?://', api) else 'https://' + api | |
31 | ||
32 | def run(self, info): | |
33 | extractor = info['extractor_key'] | |
34 | if extractor not in self.EXTRACTORS: | |
35 | self.to_screen(f'SponsorBlock is not supported for {extractor}') | |
36 | return [], info | |
37 | ||
ef58c476 | 38 | self.to_screen('Fetching SponsorBlock segments') |
7a340e0d NA |
39 | info['sponsorblock_chapters'] = self._get_sponsor_chapters(info, info['duration']) |
40 | return [], info | |
41 | ||
42 | def _get_sponsor_chapters(self, info, duration): | |
43 | segments = self._get_sponsor_segments(info['id'], self.EXTRACTORS[info['extractor_key']]) | |
44 | ||
45 | def duration_filter(s): | |
46 | start_end = s['segment'] | |
47 | # Ignore milliseconds difference at the start. | |
48 | if start_end[0] <= 1: | |
49 | start_end[0] = 0 | |
50 | # Ignore milliseconds difference at the end. | |
51 | # Never allow the segment to exceed the video. | |
52 | if duration and duration - start_end[1] <= 1: | |
53 | start_end[1] = duration | |
54 | # SponsorBlock duration may be absent or it may deviate from the real one. | |
55 | return s['videoDuration'] == 0 or not duration or abs(duration - s['videoDuration']) <= 1 | |
56 | ||
57 | duration_match = [s for s in segments if duration_filter(s)] | |
58 | if len(duration_match) != len(segments): | |
59 | self.report_warning('Some SponsorBlock segments are from a video of different duration, maybe from an old version of this video') | |
60 | ||
61 | def to_chapter(s): | |
62 | (start, end), cat = s['segment'], s['category'] | |
63 | return { | |
64 | 'start_time': start, | |
65 | 'end_time': end, | |
66 | 'category': cat, | |
67 | 'title': self.CATEGORIES[cat], | |
68 | '_categories': [(cat, start, end)] | |
69 | } | |
70 | ||
71 | sponsor_chapters = [to_chapter(s) for s in duration_match] | |
72 | if not sponsor_chapters: | |
73 | self.to_screen('No segments were found in the SponsorBlock database') | |
74 | else: | |
75 | self.to_screen(f'Found {len(sponsor_chapters)} segments in the SponsorBlock database') | |
76 | return sponsor_chapters | |
77 | ||
78 | def _get_sponsor_segments(self, video_id, service): | |
79 | hash = sha256(video_id.encode('ascii')).hexdigest() | |
80 | # SponsorBlock API recommends using first 4 hash characters. | |
81 | url = f'{self._API_URL}/api/skipSegments/{hash[:4]}?' + compat_urllib_parse_urlencode({ | |
82 | 'service': service, | |
83 | 'categories': json.dumps(self._categories), | |
84 | }) | |
ef58c476 | 85 | self.write_debug(f'SponsorBlock query: {url}') |
7a340e0d NA |
86 | for d in self._get_json(url): |
87 | if d['videoID'] == video_id: | |
88 | return d['segments'] | |
89 | return [] | |
90 | ||
91 | def _get_json(self, url): | |
ef58c476 | 92 | # While this is not an extractor, it behaves similar to one and |
93 | # so obey extractor_retries and sleep_interval_requests | |
94 | max_retries = self.get_param('extractor_retries', 3) | |
95 | sleep_interval = self.get_param('sleep_interval_requests') or 0 | |
96 | for retries in itertools.count(): | |
97 | try: | |
98 | rsp = self._downloader.urlopen(sanitized_Request(url)) | |
99 | return json.loads(rsp.read().decode(rsp.info().get_param('charset') or 'utf-8')) | |
100 | except network_exceptions as e: | |
101 | if isinstance(e, compat_HTTPError) and e.code == 404: | |
102 | return [] | |
103 | if retries < max_retries: | |
104 | self.report_warning(f'{e}. Retrying...') | |
105 | if sleep_interval > 0: | |
106 | self.to_screen(f'Sleeping {sleep_interval} seconds ...') | |
107 | time.sleep(sleep_interval) | |
108 | continue | |
109 | raise PostProcessingError(f'Unable to communicate with SponsorBlock API: {e}') |