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[panopto] Improve subtitle extraction and support slides (#3009)

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Related: #1946, #2908
Authored-by: coletdjnz
pull/3048/head^2
coletdev 2 years ago committed by GitHub
parent a2e77303e3
commit e6552207da
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 176 additions and 14 deletions
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190
yt_dlp/extractor/panopto.py
Unescape Escape View File

@ -18,12 +18,39 @@ from ..utils import (
int_or_none,
OnDemandPagedList,
parse_qs,
srt_subtitles_timecode,
traverse_obj,
)
class PanoptoBaseIE(InfoExtractor):
BASE_URL_RE = r'(?P<base_url>https?://[\w.]+\.panopto.(?:com|eu)/Panopto)'
BASE_URL_RE = r'(?P<base_url>https?://[\w.-]+\.panopto.(?:com|eu)/Panopto)'
# see panopto core.js
_SUB_LANG_MAPPING = {
0: 'en-US',
1: 'en-GB',
2: 'es-MX',
3: 'es-ES',
4: 'de-DE',
5: 'fr-FR',
6: 'nl-NL',
7: 'th-TH',
8: 'zh-CN',
9: 'zh-TW',
10: 'ko-KR',
11: 'ja-JP',
12: 'ru-RU',
13: 'pt-PT',
14: 'pl-PL',
15: 'en-AU',
16: 'da-DK',
17: 'fi-FI',
18: 'hu-HU',
19: 'nb-NO',
20: 'sv-SE',
21: 'it-IT'
}
def _call_api(self, base_url, path, video_id, data=None, fatal=True, **kwargs):
response = self._download_json(
@ -31,7 +58,7 @@ class PanoptoBaseIE(InfoExtractor):
fatal=fatal, headers={'accept': 'application/json', 'content-type': 'application/json'}, **kwargs)
if not response:
return
error_code = response.get('ErrorCode')
error_code = traverse_obj(response, 'ErrorCode')
if error_code == 2:
self.raise_login_required(method='cookies')
elif error_code is not None:
@ -62,10 +89,11 @@ class PanoptoIE(PanoptoBaseIE):
'id': '26b3ae9e-4a48-4dcc-96ba-0befba08a0fb',
'title': 'Panopto for Business - Use Cases',
'timestamp': 1459184200,
'thumbnail': r're:https://demo\.hosted\.panopto\.com/Panopto/Services/FrameGrabber\.svc/FrameRedirect\?objectId=26b3ae9e-4a48-4dcc-96ba-0befba08a0fb&mode=Delivery&random=[\d.]+',
'thumbnail': r're:https://demo\.hosted\.panopto\.com/.+',
'upload_date': '20160328',
'ext': 'mp4',
'cast': [],
'chapters': [],
'duration': 88.17099999999999,
'average_rating': int,
'uploader_id': '2db6b718-47a0-4b0b-9e17-ab0b00f42b1e',
@ -80,10 +108,10 @@ class PanoptoIE(PanoptoBaseIE):
'title': 'Overcoming Top 4 Challenges of Enterprise Video',
'uploader': 'Panopto Support',
'timestamp': 1449409251,
'thumbnail': r're:https://demo\.hosted\.panopto\.com/Panopto/Services/FrameGrabber\.svc/FrameRedirect\?objectId=ed01b077-c9e5-4c7b-b8ff-15fa306d7a59&mode=Delivery&random=[\d.]+',
'thumbnail': r're:https://demo\.hosted\.panopto\.com/.+',
'upload_date': '20151206',
'ext': 'mp4',
'chapters': 'count:21',
'chapters': 'count:12',
'cast': ['Panopto Support'],
'uploader_id': 'a96d1a31-b4de-489b-9eee-b4a5b414372c',
'average_rating': int,
@ -104,8 +132,9 @@ class PanoptoIE(PanoptoBaseIE):
'uploader_id': '316a0a58-7fa2-4cd9-be1c-64270d284a56',
'timestamp': 1569845768,
'tags': ['Viewer', 'Enterprise'],
'chapters': [],
'upload_date': '20190930',
'thumbnail': r're:https://howtovideos\.hosted\.panopto\.com/Panopto/Services/FrameGrabber.svc/FrameRedirect\?objectId=5fa74e93-3d87-4694-b60e-aaa4012214ed&mode=Delivery&random=[\d.]+',
'thumbnail': r're:https://howtovideos\.hosted\.panopto\.com/.+',
'description': 'md5:2d844aaa1b1a14ad0e2601a0993b431f',
'title': 'Getting Started: View a Video',
'average_rating': int,
@ -121,6 +150,7 @@ class PanoptoIE(PanoptoBaseIE):
'id': '9d9a0fa3-e99a-4ebd-a281-aac2017f4da4',
'ext': 'mp4',
'cast': ['LTS CLI Script'],
'chapters': [],
'duration': 2178.45,
'description': 'md5:ee5cf653919f55b72bce2dbcf829c9fa',
'channel_id': 'b23e673f-c287-4cb1-8344-aae9005a69f8',
@ -129,11 +159,77 @@ class PanoptoIE(PanoptoBaseIE):
'uploader': 'LTS CLI Script',
'timestamp': 1572458134,
'title': 'WW2 Vets Interview 3 Ronald Stanley George',
'thumbnail': r're:https://unisa\.au\.panopto\.com/Panopto/Services/FrameGrabber.svc/FrameRedirect\?objectId=9d9a0fa3-e99a-4ebd-a281-aac2017f4da4&mode=Delivery&random=[\d.]+',
'thumbnail': r're:https://unisa\.au\.panopto\.com/.+',
'channel': 'World War II Veteran Interviews',
'upload_date': '20191030',
},
},
{
# Slides/storyboard
'url': 'https://demo.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=a7f12f1d-3872-4310-84b0-f8d8ab15326b',
'info_dict': {
'id': 'a7f12f1d-3872-4310-84b0-f8d8ab15326b',
'ext': 'mhtml',
'timestamp': 1448798857,
'duration': 4712.681,
'title': 'Cache Memory - CompSci 15-213, Lecture 12',
'channel_id': 'e4c6a2fc-1214-4ca0-8fb7-aef2e29ff63a',
'uploader_id': 'a96d1a31-b4de-489b-9eee-b4a5b414372c',
'upload_date': '20151129',
'average_rating': 0,
'uploader': 'Panopto Support',
'channel': 'Showcase Videos',
'description': 'md5:55e51d54233ddb0e6c2ed388ca73822c',
'cast': ['ISR Videographer', 'Panopto Support'],
'chapters': 'count:28',
'thumbnail': r're:https://demo\.hosted\.panopto\.com/.+',
},
'params': {'format': 'mhtml', 'skip_download': True}
},
{
'url': 'https://na-training-1.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=8285224a-9a2b-4957-84f2-acb0000c4ea9',
'info_dict': {
'id': '8285224a-9a2b-4957-84f2-acb0000c4ea9',
'ext': 'mp4',
'chapters': [],
'title': 'Company Policy',
'average_rating': 0,
'timestamp': 1615058901,
'channel': 'Human Resources',
'tags': ['HumanResources'],
'duration': 1604.243,
'thumbnail': r're:https://na-training-1\.hosted\.panopto\.com/.+',
'uploader_id': '8e8ba0a3-424f-40df-a4f1-ab3a01375103',
'uploader': 'Cait M.',
'upload_date': '20210306',
'cast': ['Cait M.'],
'subtitles': {'en-US': [{'ext': 'srt', 'data': 'md5:a3f4d25963fdeace838f327097c13265'}],
'es-ES': [{'ext': 'srt', 'data': 'md5:57e9dad365fd0fbaf0468eac4949f189'}]},
},
'params': {'writesubtitles': True, 'skip_download': True}
}, {
# On Panopto there are two subs: "Default" and en-US. en-US is blank and should be skipped.
'url': 'https://na-training-1.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=940cbd41-f616-4a45-b13e-aaf1000c915b',
'info_dict': {
'id': '940cbd41-f616-4a45-b13e-aaf1000c915b',
'ext': 'mp4',
'subtitles': 'count:1',
'title': 'HR Benefits Review Meeting*',
'cast': ['Panopto Support'],
'chapters': [],
'timestamp': 1575024251,
'thumbnail': r're:https://na-training-1\.hosted\.panopto\.com/.+',
'channel': 'Zoom',
'description': 'md5:04f90a9c2c68b7828144abfb170f0106',
'uploader': 'Panopto Support',
'average_rating': 0,
'duration': 409.34499999999997,
'uploader_id': 'b6ac04ad-38b8-4724-a004-a851004ea3df',
'upload_date': '20191129',
},
'params': {'writesubtitles': True, 'skip_download': True}
},
{
'url': 'https://ucc.cloud.panopto.eu/Panopto/Pages/Viewer.aspx?id=0e8484a4-4ceb-4d98-a63f-ac0200b455cb',
'only_matching': True
@ -178,19 +274,82 @@ class PanoptoIE(PanoptoBaseIE):
note='Marking watched', errnote='Unable to mark watched')
@staticmethod
def _extract_chapters(delivery):
def _extract_chapters(timestamps):
chapters = []
for timestamp in delivery.get('Timestamps', []):
for timestamp in timestamps or []:
caption = timestamp.get('Caption')
start, duration = int_or_none(timestamp.get('Time')), int_or_none(timestamp.get('Duration'))
if start is None or duration is None:
if not caption or start is None or duration is None:
continue
chapters.append({
'start_time': start,
'end_time': start + duration,
'title': timestamp.get('Caption')
'title': caption
})
return chapters
@staticmethod
def _extract_mhtml_formats(base_url, timestamps):
image_frags = {}
for timestamp in timestamps or []:
duration = timestamp.get('Duration')
obj_id, obj_sn = timestamp.get('ObjectIdentifier'), timestamp.get('ObjectSequenceNumber'),
if timestamp.get('EventTargetType') == 'PowerPoint' and obj_id is not None and obj_sn is not None:
image_frags.setdefault('slides', []).append({
'url': base_url + f'/Pages/Viewer/Image.aspx?id={obj_id}&number={obj_sn}',
'duration': duration
})
obj_pid, session_id, abs_time = timestamp.get('ObjectPublicIdentifier'), timestamp.get('SessionID'), timestamp.get('AbsoluteTime')
if None not in (obj_pid, session_id, abs_time):
image_frags.setdefault('chapter', []).append({
'url': base_url + f'/Pages/Viewer/Thumb.aspx?eventTargetPID={obj_pid}&sessionPID={session_id}&number={obj_sn}&isPrimary=false&absoluteTime={abs_time}',
'duration': duration,
})
for name, fragments in image_frags.items():
yield {
'format_id': name,
'ext': 'mhtml',
'protocol': 'mhtml',
'acodec': 'none',
'vcodec': 'none',
'url': 'about:invalid',
'fragments': fragments
}
@staticmethod
def _json2srt(data, delivery):
def _gen_lines():
for i, line in enumerate(data):
start_time = line['Time']
duration = line.get('Duration')
if duration:
end_time = start_time + duration
else:
end_time = traverse_obj(data, (i + 1, 'Time')) or delivery['Duration']
yield f'{i + 1}\n{srt_subtitles_timecode(start_time)} --> {srt_subtitles_timecode(end_time)}\n{line["Caption"]}'
return '\n\n'.join(_gen_lines())
def _get_subtitles(self, base_url, video_id, delivery):
subtitles = {}
for lang in delivery.get('AvailableLanguages') or []:
response = self._call_api(
base_url, '/Pages/Viewer/DeliveryInfo.aspx', video_id, fatal=False,
note='Downloading captions JSON metadata', query={
'deliveryId': video_id,
'getCaptions': True,
'language': str(lang),
'responseType': 'json'
}
)
if not isinstance(response, list):
continue
subtitles.setdefault(self._SUB_LANG_MAPPING.get(lang) or 'default', []).append({
'ext': 'srt',
'data': self._json2srt(response, delivery),
})
return subtitles
def _extract_streams_formats_and_subtitles(self, video_id, streams, **fmt_kwargs):
formats = []
subtitles = {}
@ -240,6 +399,7 @@ class PanoptoIE(PanoptoBaseIE):
delivery = delivery_info['Delivery']
session_start_time = int_or_none(delivery.get('SessionStartTime'))
timestamps = delivery.get('Timestamps')
# Podcast stream is usually the combined streams. We will prefer that by default.
podcast_formats, podcast_subtitles = self._extract_streams_formats_and_subtitles(
@ -249,9 +409,11 @@ class PanoptoIE(PanoptoBaseIE):
video_id, delivery.get('Streams'), preference=-10)
formats = podcast_formats + streams_formats
subtitles = self._merge_subtitles(podcast_subtitles, streams_subtitles)
self._sort_formats(formats)
formats.extend(self._extract_mhtml_formats(base_url, timestamps))
subtitles = self._merge_subtitles(
podcast_subtitles, streams_subtitles, self.extract_subtitles(base_url, video_id, delivery))
self._sort_formats(formats)
self.mark_watched(base_url, video_id, delivery_info)
return {
@ -262,7 +424,7 @@ class PanoptoIE(PanoptoBaseIE):
'duration': delivery.get('Duration'),
'thumbnail': base_url + f'/Services/FrameGrabber.svc/FrameRedirect?objectId={video_id}&mode=Delivery&random={random()}',
'average_rating': delivery.get('AverageRating'),
'chapters': self._extract_chapters(delivery) or None,
'chapters': self._extract_chapters(timestamps),
'uploader': delivery.get('OwnerDisplayName') or None,
'uploader_id': delivery.get('OwnerId'),
'description': delivery.get('SessionAbstract'),

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