Repository: yt-dlp/yt-dlp

Issue:
Support for classes on Nebula
### DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE

- [X] I understand that I will be **blocked** if I remove or skip any mandatory\* field

### Checklist

- [X] I'm requesting a site-specific feature
- [X] I've verified that I'm running yt-dlp version **2022.11.11** ([update instructions](https://github.com/yt-dlp/yt-dlp#update)) or later (specify commit)
- [X] I've checked that all provided URLs are playable in a browser with the same IP and same login details
- [X] I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
- [X] I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
- [ ] I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and I'm willing to share it if required

### Region

_No response_

### Example URLs

https://nebula.tv/how-to-sue-like-a-lawyer

### Provide a description that is worded well enough to be understood

The classes feature on Nebula is distinct from channels, and yt-dlp currently can't tell the difference. I request support for downloading classes. I could imagine them being treated as playlists when it comes to a user interacting with yt-dlp.

### Provide verbose output that clearly demonstrates the problem

- [X] Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
- [X] Copy the WHOLE output (starting with `[debug] Command-line config`) and insert it below

### Complete Verbose Output

```shell
[debug] Command-line config: ['-vU', '-u', 'PRIVATE', '-p', 'PRIVATE', 'https://nebula.tv/how-to-sue-like-a-lawyer']
[debug] User config "/home/mikko/.config/yt-dlp/config": ['-f', 'bestvideo[height<=1440]+bestaudio/best[height<=1440]', '--restrict-filenames', '--no-playlist', '--embed-subs']
[debug] Encodings: locale UTF-8, fs utf-8, pref UTF-8, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version 2022.11.11 [8b64402]
[debug] Python 3.10.8 (CPython x86_64 64bit) - Linux-6.0.10-arch2-1-x86_64-with-glibc2.36 (OpenSSL 3.0.7 1 Nov 2022, glibc 2.36)
[debug] exe versions: ffmpeg 5.1.2 (setts), ffprobe 5.1.2, rtmpdump 2.4
[debug] Optional libraries: Cryptodome-3.12.0, certifi-2022.09.24, mutagen-1.46.0, sqlite3-2.6.0, websockets-10.3
[debug] Proxy map: {}
[debug] Loaded 1723 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Latest version: 2022.11.11, Current version: 2022.11.11
yt-dlp is up to date (2022.11.11)
[nebula:channel] Logging in to Nebula with supplied credentials
[nebula:channel] Authorizing to Nebula
[nebula:channel] Retrieving Zype access token
[debug] [nebula:channel] Extracting URL: https://nebula.tv/how-to-sue-like-a-lawyer
[nebula:channel] how-to-sue-like-a-lawyer: Retrieving channel
ERROR: [nebula:channel] how-to-sue-like-a-lawyer: Unable to download JSON metadata: HTTP Error 404: Not Found (caused by <HTTPError 404: 'Not Found'>); please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/common.py", line 674, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/nebula.py", line 315, in _real_extract
    channel = self._call_nebula_api(channel_url, collection_id, auth_type='bearer', note='Retrieving channel')
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/nebula.py", line 79, in _call_nebula_api
    return inner_call()
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/nebula.py", line 74, in inner_call
    return self._download_json(
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/common.py", line 1034, in download_content
    res = getattr(self, download_handle.__name__)(url_or_request, video_id, **kwargs)
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/common.py", line 998, in download_handle
    res = self._download_webpage_handle(
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/common.py", line 868, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query, expected_status=expected_status)
  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/common.py", line 825, in _request_webpage
    raise ExtractorError(errmsg, cause=err)

  File "/usr/lib/python3.10/site-packages/yt_dlp/extractor/common.py", line 807, in _request_webpage
    return self._downloader.urlopen(self._create_request(url_or_request, data, headers, query))
  File "/usr/lib/python3.10/site-packages/yt_dlp/YoutubeDL.py", line 3692, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib/python3.10/urllib/request.py", line 525, in open
    response = meth(req, response)
  File "/usr/lib/python3.10/urllib/request.py", line 634, in http_response
    response = self.parent.error(
  File "/usr/lib/python3.10/urllib/request.py", line 563, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.10/urllib/request.py", line 496, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.10/urllib/request.py", line 643, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 404: Not Found
```



Discussion:
Individual videos of a class can also be reached via `/1`, `/2` etc., so for example https://nebula.tv/how-to-sue-like-a-lawyer/1

Maybe supporting these individual videos is more straightforward, but downloading a whole class as a playlist would definitely be great too!
I am also experiencing this issue and am willing to provide my credentials for testing if this will be helpful.

Resolving patch:
diff --git a/yt_dlp/extractor/_extractors.py b/yt_dlp/extractor/_extractors.py
--- a/yt_dlp/extractor/_extractors.py
+++ b/yt_dlp/extractor/_extractors.py
@@ -1230,6 +1230,7 @@
 from .ndtv import NDTVIE
 from .nebula import (
     NebulaIE,
+    NebulaClassIE,
     NebulaSubscriptionsIE,
     NebulaChannelIE,
 )
diff --git a/yt_dlp/extractor/nebula.py b/yt_dlp/extractor/nebula.py
--- a/yt_dlp/extractor/nebula.py
+++ b/yt_dlp/extractor/nebula.py
@@ -3,230 +3,306 @@
 
 from .common import InfoExtractor
 from ..networking.exceptions import HTTPError
-from ..utils import ExtractorError, make_archive_id, parse_iso8601, remove_start
+from ..utils import (
+    ExtractorError,
+    int_or_none,
+    make_archive_id,
+    parse_iso8601,
+    smuggle_url,
+    try_call,
+    unsmuggle_url,
+    update_url_query,
+    url_or_none,
+    urljoin,
+)
+from ..utils.traversal import traverse_obj
 
 _BASE_URL_RE = r'https?://(?:www\.|beta\.)?(?:watchnebula\.com|nebula\.app|nebula\.tv)'
 
 
 class NebulaBaseIE(InfoExtractor):
     _NETRC_MACHINE = 'watchnebula'
+    _token = _api_token = None
 
-    _nebula_api_token = None
-    _nebula_bearer_token = None
-
-    def _perform_nebula_auth(self, username, password):
-        if not username or not password:
-            self.raise_login_required(method='password')
-
-        data = json.dumps({'email': username, 'password': password}).encode('utf8')
-        response = self._download_json(
-            'https://api.watchnebula.com/api/v1/auth/login/',
-            data=data, fatal=False, video_id=None,
-            headers={
-                'content-type': 'application/json',
-                # Submitting the 'sessionid' cookie always causes a 403 on auth endpoint
-                'cookie': ''
-            },
-            note='Logging in to Nebula with supplied credentials',
-            errnote='Authentication failed or rejected')
-        if not response or not response.get('key'):
-            self.raise_login_required(method='password')
-
-        return response['key']
-
-    def _call_nebula_api(self, url, video_id=None, method='GET', auth_type='api', note=''):
-        assert method in ('GET', 'POST',)
-        assert auth_type in ('api', 'bearer',)
-
-        def inner_call():
-            authorization = f'Token {self._nebula_api_token}' if auth_type == 'api' else f'Bearer {self._nebula_bearer_token}'
-            return self._download_json(
-                url, video_id, note=note, headers={'Authorization': authorization},
-                data=b'' if method == 'POST' else None)
+    def _perform_login(self, username, password):
+        try:
+            response = self._download_json(
+                'https://nebula.tv/auth/login/', None,
+                'Logging in to Nebula', 'Login failed',
+                data=json.dumps({'email': username, 'password': password}).encode(),
+                headers={'content-type': 'application/json'})
+        except ExtractorError as e:
+            if isinstance(e.cause, HTTPError) and e.cause.status == 400:
+                raise ExtractorError('Login failed: Invalid username or password', expected=True)
+            raise
+        self._api_token = traverse_obj(response, ('key', {str}))
+        if not self._api_token:
+            raise ExtractorError('Login failed: No token')
 
+    def _call_api(self, *args, **kwargs):
+        if self._token:
+            kwargs.setdefault('headers', {})['Authorization'] = f'Bearer {self._token}'
         try:
-            return inner_call()
-        except ExtractorError as exc:
-            # if 401 or 403, attempt credential re-auth and retry
-            if exc.cause and isinstance(exc.cause, HTTPError) and exc.cause.status in (401, 403):
-                self.to_screen(f'Reauthenticating to Nebula and retrying, because last {auth_type} call resulted in error {exc.cause.code}')
-                self._perform_login()
-                return inner_call()
-            else:
+            return self._download_json(*args, **kwargs)
+        except ExtractorError as e:
+            if not isinstance(e.cause, HTTPError) or e.cause.status not in (401, 403):
                 raise
+            self.to_screen(
+                f'Reauthorizing with Nebula and retrying, because last API call resulted in error {e.cause.status}')
+            self._real_initialize()
+            if self._token:
+                kwargs.setdefault('headers', {})['Authorization'] = f'Bearer {self._token}'
+            return self._download_json(*args, **kwargs)
 
-    def _fetch_nebula_bearer_token(self):
-        """
-        Get a Bearer token for the Nebula API. This will be required to fetch video meta data.
-        """
-        response = self._call_nebula_api('https://api.watchnebula.com/api/v1/authorization/',
-                                         method='POST',
-                                         note='Authorizing to Nebula')
-        return response['token']
+    def _real_initialize(self):
+        if not self._api_token:
+            self._api_token = try_call(
+                lambda: self._get_cookies('https://nebula.tv')['nebula_auth.apiToken'].value)
+        self._token = self._download_json(
+            'https://users.api.nebula.app/api/v1/authorization/', None,
+            headers={'Authorization': f'Token {self._api_token}'} if self._api_token else None,
+            note='Authorizing to Nebula', data=b'')['token']
 
-    def _fetch_video_formats(self, slug):
-        stream_info = self._call_nebula_api(f'https://content.api.nebula.app/video/{slug}/stream/',
-                                            video_id=slug,
-                                            auth_type='bearer',
-                                            note='Fetching video stream info')
-        manifest_url = stream_info['manifest']
-        return self._extract_m3u8_formats_and_subtitles(manifest_url, slug, 'mp4')
+    def _extract_formats(self, content_id, slug):
+        for retry in (False, True):
+            try:
+                fmts, subs = self._extract_m3u8_formats_and_subtitles(
+                    f'https://content.api.nebula.app/{content_id.split(":")[0]}s/{content_id}/manifest.m3u8',
+                    slug, 'mp4', query={
+                        'token': self._token,
+                        'app_version': '23.10.0',
+                        'platform': 'ios',
+                    })
+                return {'formats': fmts, 'subtitles': subs}
+            except ExtractorError as e:
+                if isinstance(e.cause, HTTPError) and e.cause.status == 401:
+                    self.raise_login_required()
+                if not retry and isinstance(e.cause, HTTPError) and e.cause.status == 403:
+                    self.to_screen('Reauthorizing with Nebula and retrying, because fetching video resulted in error')
+                    self._real_initialize()
+                    continue
+                raise
 
-    def _build_video_info(self, episode):
-        fmts, subs = self._fetch_video_formats(episode['slug'])
-        channel_slug = episode['channel_slug']
-        channel_title = episode['channel_title']
-        zype_id = episode.get('zype_id')
+    def _extract_video_metadata(self, episode):
+        channel_url = traverse_obj(
+            episode, (('channel_slug', 'class_slug'), {lambda x: urljoin('https://nebula.tv/', x)}), get_all=False)
         return {
-            'id': remove_start(episode['id'], 'video_episode:'),
-            'display_id': episode['slug'],
-            'formats': fmts,
-            'subtitles': subs,
-            'webpage_url': f'https://nebula.tv/{episode["slug"]}',
-            'title': episode['title'],
-            'description': episode['description'],
-            'timestamp': parse_iso8601(episode['published_at']),
-            'thumbnails': [{
-                # 'id': tn.get('name'),  # this appears to be null
-                'url': tn['original'],
-                'height': key,
-            } for key, tn in episode['assets']['thumbnail'].items()],
-            'duration': episode['duration'],
-            'channel': channel_title,
-            'channel_id': channel_slug,
-            'channel_url': f'https://nebula.tv/{channel_slug}',
-            'uploader': channel_title,
-            'uploader_id': channel_slug,
-            'uploader_url': f'https://nebula.tv/{channel_slug}',
-            'series': channel_title,
-            'creator': channel_title,
-            'extractor_key': NebulaIE.ie_key(),
-            'extractor': NebulaIE.IE_NAME,
-            '_old_archive_ids': [make_archive_id(NebulaIE, zype_id)] if zype_id else None,
+            'id': episode['id'].partition(':')[2],
+            **traverse_obj(episode, {
+                'display_id': 'slug',
+                'title': 'title',
+                'description': 'description',
+                'timestamp': ('published_at', {parse_iso8601}),
+                'duration': ('duration', {int_or_none}),
+                'channel_id': 'channel_slug',
+                'uploader_id': 'channel_slug',
+                'channel': 'channel_title',
+                'uploader': 'channel_title',
+                'series': 'channel_title',
+                'creator': 'channel_title',
+                'thumbnail': ('images', 'thumbnail', 'src', {url_or_none}),
+                'episode_number': ('order', {int_or_none}),
+                # Old code was wrongly setting extractor_key from NebulaSubscriptionsIE
+                '_old_archive_ids': ('zype_id', {lambda x: [
+                    make_archive_id(NebulaIE, x), make_archive_id(NebulaSubscriptionsIE, x)] if x else None}),
+            }),
+            'channel_url': channel_url,
+            'uploader_url': channel_url,
         }
 
-    def _perform_login(self, username=None, password=None):
-        self._nebula_api_token = self._perform_nebula_auth(username, password)
-        self._nebula_bearer_token = self._fetch_nebula_bearer_token()
-
 
 class NebulaIE(NebulaBaseIE):
     _VALID_URL = rf'{_BASE_URL_RE}/videos/(?P<id>[-\w]+)'
-    _TESTS = [
-        {
-            'url': 'https://nebula.tv/videos/that-time-disney-remade-beauty-and-the-beast',
-            'md5': '14944cfee8c7beeea106320c47560efc',
-            'info_dict': {
-                'id': '84ed544d-4afd-4723-8cd5-2b95261f0abf',
-                'ext': 'mp4',
-                'title': 'That Time Disney Remade Beauty and the Beast',
-                'description': 'Note: this video was originally posted on YouTube with the sponsor read included. We weren’t able to remove it without reducing video quality, so it’s presented here in its original context.',
-                'upload_date': '20180731',
-                'timestamp': 1533009600,
-                'channel': 'Lindsay Ellis',
-                'channel_id': 'lindsayellis',
-                'uploader': 'Lindsay Ellis',
-                'uploader_id': 'lindsayellis',
-                'uploader_url': 'https://nebula.tv/lindsayellis',
-                'series': 'Lindsay Ellis',
-                'display_id': 'that-time-disney-remade-beauty-and-the-beast',
-                'channel_url': 'https://nebula.tv/lindsayellis',
-                'creator': 'Lindsay Ellis',
-                'duration': 2212,
-                'thumbnail': r're:https://\w+\.cloudfront\.net/[\w-]+\.jpeg?.*',
-            },
-        },
-        {
-            'url': 'https://nebula.tv/videos/the-logistics-of-d-day-landing-craft-how-the-allies-got-ashore',
-            'md5': 'd05739cf6c38c09322422f696b569c23',
-            'info_dict': {
-                'id': '7e623145-1b44-4ca3-aa0b-ed25a247ea34',
-                'ext': 'mp4',
-                'title': 'Landing Craft - How The Allies Got Ashore',
-                'description': r're:^In this episode we explore the unsung heroes of D-Day, the landing craft.',
-                'upload_date': '20200327',
-                'timestamp': 1585348140,
-                'channel': 'Real Engineering — The Logistics of D-Day',
-                'channel_id': 'd-day',
-                'uploader': 'Real Engineering — The Logistics of D-Day',
-                'uploader_id': 'd-day',
-                'series': 'Real Engineering — The Logistics of D-Day',
-                'display_id': 'the-logistics-of-d-day-landing-craft-how-the-allies-got-ashore',
-                'creator': 'Real Engineering — The Logistics of D-Day',
-                'duration': 841,
-                'channel_url': 'https://nebula.tv/d-day',
-                'uploader_url': 'https://nebula.tv/d-day',
-                'thumbnail': r're:https://\w+\.cloudfront\.net/[\w-]+\.jpeg?.*',
-            },
+    _TESTS = [{
+        'url': 'https://nebula.tv/videos/that-time-disney-remade-beauty-and-the-beast',
+        'info_dict': {
+            'id': '84ed544d-4afd-4723-8cd5-2b95261f0abf',
+            'ext': 'mp4',
+            'title': 'That Time Disney Remade Beauty and the Beast',
+            'description': 'md5:2aae3c4cfc5ee09a1ecdff0909618cf4',
+            'upload_date': '20180731',
+            'timestamp': 1533009600,
+            'channel': 'Lindsay Ellis',
+            'channel_id': 'lindsayellis',
+            'uploader': 'Lindsay Ellis',
+            'uploader_id': 'lindsayellis',
+            'uploader_url': r're:https://nebula\.(tv|app)/lindsayellis',
+            'series': 'Lindsay Ellis',
+            'display_id': 'that-time-disney-remade-beauty-and-the-beast',
+            'channel_url': r're:https://nebula\.(tv|app)/lindsayellis',
+            'creator': 'Lindsay Ellis',
+            'duration': 2212,
+            'thumbnail': r're:https://\w+\.cloudfront\.net/[\w-]+',
+            '_old_archive_ids': ['nebula 5c271b40b13fd613090034fd', 'nebulasubscriptions 5c271b40b13fd613090034fd'],
         },
-        {
-            'url': 'https://nebula.tv/videos/money-episode-1-the-draw',
-            'md5': 'ebe28a7ad822b9ee172387d860487868',
-            'info_dict': {
-                'id': 'b96c5714-9e2b-4ec3-b3f1-20f6e89cc553',
-                'ext': 'mp4',
-                'title': 'Episode 1: The Draw',
-                'description': r'contains:There’s free money on offer… if the players can all work together.',
-                'upload_date': '20200323',
-                'timestamp': 1584980400,
-                'channel': 'Tom Scott Presents: Money',
-                'channel_id': 'tom-scott-presents-money',
-                'uploader': 'Tom Scott Presents: Money',
-                'uploader_id': 'tom-scott-presents-money',
-                'uploader_url': 'https://nebula.tv/tom-scott-presents-money',
-                'duration': 825,
-                'channel_url': 'https://nebula.tv/tom-scott-presents-money',
-                'series': 'Tom Scott Presents: Money',
-                'display_id': 'money-episode-1-the-draw',
-                'thumbnail': r're:https://\w+\.cloudfront\.net/[\w-]+\.jpeg?.*',
-                'creator': 'Tom Scott Presents: Money',
-            },
+        'params': {'skip_download': 'm3u8'},
+    }, {
+        'url': 'https://nebula.tv/videos/the-logistics-of-d-day-landing-craft-how-the-allies-got-ashore',
+        'md5': 'd05739cf6c38c09322422f696b569c23',
+        'info_dict': {
+            'id': '7e623145-1b44-4ca3-aa0b-ed25a247ea34',
+            'ext': 'mp4',
+            'title': 'Landing Craft - How The Allies Got Ashore',
+            'description': r're:^In this episode we explore the unsung heroes of D-Day, the landing craft.',
+            'upload_date': '20200327',
+            'timestamp': 1585348140,
+            'channel': 'Real Engineering — The Logistics of D-Day',
+            'channel_id': 'd-day',
+            'uploader': 'Real Engineering — The Logistics of D-Day',
+            'uploader_id': 'd-day',
+            'series': 'Real Engineering — The Logistics of D-Day',
+            'display_id': 'the-logistics-of-d-day-landing-craft-how-the-allies-got-ashore',
+            'creator': 'Real Engineering — The Logistics of D-Day',
+            'duration': 841,
+            'channel_url': 'https://nebula.tv/d-day',
+            'uploader_url': 'https://nebula.tv/d-day',
+            'thumbnail': r're:https://\w+\.cloudfront\.net/[\w-]+',
+            '_old_archive_ids': ['nebula 5e7e78171aaf320001fbd6be', 'nebulasubscriptions 5e7e78171aaf320001fbd6be'],
         },
-        {
-            'url': 'https://watchnebula.com/videos/money-episode-1-the-draw',
-            'only_matching': True,
+        'params': {'skip_download': 'm3u8'},
+    }, {
+        'url': 'https://nebula.tv/videos/money-episode-1-the-draw',
+        'md5': 'ebe28a7ad822b9ee172387d860487868',
+        'info_dict': {
+            'id': 'b96c5714-9e2b-4ec3-b3f1-20f6e89cc553',
+            'ext': 'mp4',
+            'title': 'Episode 1: The Draw',
+            'description': r'contains:There’s free money on offer… if the players can all work together.',
+            'upload_date': '20200323',
+            'timestamp': 1584980400,
+            'channel': 'Tom Scott Presents: Money',
+            'channel_id': 'tom-scott-presents-money',
+            'uploader': 'Tom Scott Presents: Money',
+            'uploader_id': 'tom-scott-presents-money',
+            'uploader_url': 'https://nebula.tv/tom-scott-presents-money',
+            'duration': 825,
+            'channel_url': 'https://nebula.tv/tom-scott-presents-money',
+            'series': 'Tom Scott Presents: Money',
+            'display_id': 'money-episode-1-the-draw',
+            'thumbnail': r're:https://\w+\.cloudfront\.net/[\w-]+',
+            'creator': 'Tom Scott Presents: Money',
+            '_old_archive_ids': ['nebula 5e779ebdd157bc0001d1c75a', 'nebulasubscriptions 5e779ebdd157bc0001d1c75a'],
         },
-        {
-            'url': 'https://beta.nebula.tv/videos/money-episode-1-the-draw',
-            'only_matching': True,
+        'params': {'skip_download': 'm3u8'},
+    }, {
+        'url': 'https://watchnebula.com/videos/money-episode-1-the-draw',
+        'only_matching': True,
+    }, {
+        'url': 'https://nebula.tv/videos/tldrnewseu-did-the-us-really-blow-up-the-nordstream-pipelines',
+        'info_dict': {
+            'id': 'e389af9d-1dab-44f2-8788-ee24deb7ff0d',
+            'ext': 'mp4',
+            'display_id': 'tldrnewseu-did-the-us-really-blow-up-the-nordstream-pipelines',
+            'title': 'Did the US Really Blow Up the NordStream Pipelines?',
+            'description': 'md5:b4e2a14e3ff08f546a3209c75261e789',
+            'upload_date': '20230223',
+            'timestamp': 1677144070,
+            'channel': 'TLDR News EU',
+            'channel_id': 'tldrnewseu',
+            'uploader': 'TLDR News EU',
+            'uploader_id': 'tldrnewseu',
+            'uploader_url': r're:https://nebula\.(tv|app)/tldrnewseu',
+            'duration': 524,
+            'channel_url': r're:https://nebula\.(tv|app)/tldrnewseu',
+            'series': 'TLDR News EU',
+            'thumbnail': r're:https://\w+\.cloudfront\.net/[\w-]+',
+            'creator': 'TLDR News EU',
+            '_old_archive_ids': ['nebula 63f64c74366fcd00017c1513', 'nebulasubscriptions 63f64c74366fcd00017c1513'],
         },
-    ]
-
-    def _fetch_video_metadata(self, slug):
-        return self._call_nebula_api(f'https://content.api.nebula.app/video/{slug}/',
-                                     video_id=slug,
-                                     auth_type='bearer',
-                                     note='Fetching video meta data')
+        'params': {'skip_download': 'm3u8'},
+    }, {
+        'url': 'https://beta.nebula.tv/videos/money-episode-1-the-draw',
+        'only_matching': True,
+    }]
 
     def _real_extract(self, url):
         slug = self._match_id(url)
-        video = self._fetch_video_metadata(slug)
-        return self._build_video_info(video)
+        url, smuggled_data = unsmuggle_url(url, {})
+        if smuggled_data.get('id'):
+            return {
+                'id': smuggled_data['id'],
+                'display_id': slug,
+                'title': '',
+                **self._extract_formats(smuggled_data['id'], slug),
+            }
+
+        metadata = self._call_api(
+            f'https://content.api.nebula.app/content/videos/{slug}',
+            slug, note='Fetching video metadata')
+        return {
+            **self._extract_video_metadata(metadata),
+            **self._extract_formats(metadata['id'], slug),
+        }
+
+
+class NebulaClassIE(NebulaBaseIE):
+    IE_NAME = 'nebula:class'
+    _VALID_URL = rf'{_BASE_URL_RE}/(?P<id>[-\w]+)/(?P<ep>\d+)'
+    _TESTS = [{
+        'url': 'https://nebula.tv/copyright-for-fun-and-profit/14',
+        'info_dict': {
+            'id': 'd7432cdc-c608-474d-942c-f74345daed7b',
+            'ext': 'mp4',
+            'display_id': '14',
+            'channel_url': 'https://nebula.tv/copyright-for-fun-and-profit',
+            'episode_number': 14,
+            'thumbnail': 'https://dj423fildxgac.cloudfront.net/d533718d-9307-42d4-8fb0-e283285e99c9',
+            'uploader_url': 'https://nebula.tv/copyright-for-fun-and-profit',
+            'duration': 646,
+            'episode': 'Episode 14',
+            'title': 'Photos, Sculpture, and Video',
+        },
+        'params': {'skip_download': 'm3u8'},
+    }]
+
+    def _real_extract(self, url):
+        slug, episode = self._match_valid_url(url).group('id', 'ep')
+        url, smuggled_data = unsmuggle_url(url, {})
+        if smuggled_data.get('id'):
+            return {
+                'id': smuggled_data['id'],
+                'display_id': slug,
+                'title': '',
+                **self._extract_formats(smuggled_data['id'], slug),
+            }
+
+        metadata = self._call_api(
+            f'https://content.api.nebula.app/content/{slug}/{episode}/?include=lessons',
+            slug, note='Fetching video metadata')
+        return {
+            **self._extract_video_metadata(metadata),
+            **self._extract_formats(metadata['id'], slug),
+        }
 
 
 class NebulaSubscriptionsIE(NebulaBaseIE):
     IE_NAME = 'nebula:subscriptions'
-    _VALID_URL = rf'{_BASE_URL_RE}/myshows'
-    _TESTS = [
-        {
-            'url': 'https://nebula.tv/myshows',
-            'playlist_mincount': 1,
-            'info_dict': {
-                'id': 'myshows',
-            },
+    _VALID_URL = rf'{_BASE_URL_RE}/(?P<id>myshows|library/latest-videos)'
+    _TESTS = [{
+        'url': 'https://nebula.tv/myshows',
+        'playlist_mincount': 1,
+        'info_dict': {
+            'id': 'myshows',
         },
-    ]
+    }]
 
     def _generate_playlist_entries(self):
-        next_url = 'https://content.watchnebula.com/library/video/?page_size=100'
-        page_num = 1
-        while next_url:
-            channel = self._call_nebula_api(next_url, 'myshows', auth_type='bearer',
-                                            note=f'Retrieving subscriptions page {page_num}')
+        next_url = update_url_query('https://content.api.nebula.app/video_episodes/', {
+            'following': 'true',
+            'include': 'engagement',
+            'ordering': '-published_at',
+        })
+        for page_num in itertools.count(1):
+            channel = self._call_api(
+                next_url, 'myshows', note=f'Retrieving subscriptions page {page_num}')
             for episode in channel['results']:
-                yield self._build_video_info(episode)
-            next_url = channel['next']
-            page_num += 1
+                metadata = self._extract_video_metadata(episode)
+                yield self.url_result(smuggle_url(
+                    f'https://nebula.tv/videos/{metadata["display_id"]}',
+                    {'id': episode['id']}), NebulaIE, url_transparent=True, **metadata)
+            next_url = channel.get('next')
+            if not next_url:
+                return
 
     def _real_extract(self, url):
         return self.playlist_result(self._generate_playlist_entries(), 'myshows')
@@ -234,48 +310,74 @@ def _real_extract(self, url):
 
 class NebulaChannelIE(NebulaBaseIE):
     IE_NAME = 'nebula:channel'
-    _VALID_URL = rf'{_BASE_URL_RE}/(?!myshows|videos/)(?P<id>[-\w]+)'
-    _TESTS = [
-        {
-            'url': 'https://nebula.tv/tom-scott-presents-money',
-            'info_dict': {
-                'id': 'tom-scott-presents-money',
-                'title': 'Tom Scott Presents: Money',
-                'description': 'Tom Scott hosts a series all about trust, negotiation and money.',
-            },
-            'playlist_count': 5,
-        }, {
-            'url': 'https://nebula.tv/lindsayellis',
-            'info_dict': {
-                'id': 'lindsayellis',
-                'title': 'Lindsay Ellis',
-                'description': 'Enjoy these hottest of takes on Disney, Transformers, and Musicals.',
-            },
-            'playlist_mincount': 2,
+    _VALID_URL = rf'{_BASE_URL_RE}/(?!myshows|library|videos/)(?P<id>[-\w]+)/?(?:$|[?#])'
+    _TESTS = [{
+        'url': 'https://nebula.tv/tom-scott-presents-money',
+        'info_dict': {
+            'id': 'tom-scott-presents-money',
+            'title': 'Tom Scott Presents: Money',
+            'description': 'Tom Scott hosts a series all about trust, negotiation and money.',
+        },
+        'playlist_count': 5,
+    }, {
+        'url': 'https://nebula.tv/lindsayellis',
+        'info_dict': {
+            'id': 'lindsayellis',
+            'title': 'Lindsay Ellis',
+            'description': 'Enjoy these hottest of takes on Disney, Transformers, and Musicals.',
+        },
+        'playlist_mincount': 2,
+    }, {
+        'url': 'https://nebula.tv/johnnyharris',
+        'info_dict': {
+            'id': 'johnnyharris',
+            'title': 'Johnny Harris',
+            'description': 'I make videos about maps and many other things.',
         },
-    ]
+        'playlist_mincount': 90,
+    }, {
+        'url': 'https://nebula.tv/copyright-for-fun-and-profit',
+        'info_dict': {
+            'id': 'copyright-for-fun-and-profit',
+            'title': 'Copyright for Fun and Profit',
+            'description': 'md5:6690248223eed044a9f11cd5a24f9742',
+        },
+        'playlist_count': 23,
+    }]
 
-    def _generate_playlist_entries(self, collection_id, channel):
-        episodes = channel['episodes']['results']
-        for page_num in itertools.count(2):
-            for episode in episodes:
-                yield self._build_video_info(episode)
-            next_url = channel['episodes']['next']
+    def _generate_playlist_entries(self, collection_id, collection_slug):
+        next_url = f'https://content.api.nebula.app/video_channels/{collection_id}/video_episodes/?ordering=-published_at'
+        for page_num in itertools.count(1):
+            episodes = self._call_api(next_url, collection_slug, note=f'Retrieving channel page {page_num}')
+            for episode in episodes['results']:
+                metadata = self._extract_video_metadata(episode)
+                yield self.url_result(smuggle_url(
+                    episode.get('share_url') or f'https://nebula.tv/videos/{metadata["display_id"]}',
+                    {'id': episode['id']}), NebulaIE, url_transparent=True, **metadata)
+            next_url = episodes.get('next')
             if not next_url:
                 break
-            channel = self._call_nebula_api(next_url, collection_id, auth_type='bearer',
-                                            note=f'Retrieving channel page {page_num}')
-            episodes = channel['episodes']['results']
+
+    def _generate_class_entries(self, channel):
+        for lesson in channel['lessons']:
+            metadata = self._extract_video_metadata(lesson)
+            yield self.url_result(smuggle_url(
+                lesson.get('share_url') or f'https://nebula.tv/{metadata["class_slug"]}/{metadata["slug"]}',
+                {'id': lesson['id']}), NebulaClassIE, url_transparent=True, **metadata)
 
     def _real_extract(self, url):
-        collection_id = self._match_id(url)
-        channel_url = f'https://content.watchnebula.com/video/channels/{collection_id}/'
-        channel = self._call_nebula_api(channel_url, collection_id, auth_type='bearer', note='Retrieving channel')
-        channel_details = channel['details']
+        collection_slug = self._match_id(url)
+        channel = self._call_api(
+            f'https://content.api.nebula.app/content/{collection_slug}/?include=lessons',
+            collection_slug, note='Retrieving channel')
+
+        if channel.get('type') == 'class':
+            entries = self._generate_class_entries(channel)
+        else:
+            entries = self._generate_playlist_entries(channel['id'], collection_slug)
 
         return self.playlist_result(
-            entries=self._generate_playlist_entries(collection_id, channel),
-            playlist_id=collection_id,
-            playlist_title=channel_details['title'],
-            playlist_description=channel_details['description']
-        )
+            entries=entries,
+            playlist_id=collection_slug,
+            playlist_title=channel.get('title'),
+            playlist_description=channel.get('description'))


Test patch:
diff --git a/test/helper.py b/test/helper.py
--- a/test/helper.py
+++ b/test/helper.py
@@ -214,8 +214,9 @@ def sanitize(key, value):
 
     test_info_dict = {
         key: sanitize(key, value) for key, value in got_dict.items()
-        if value is not None and key not in IGNORED_FIELDS and not any(
-            key.startswith(f'{prefix}_') for prefix in IGNORED_PREFIXES)
+        if value is not None and key not in IGNORED_FIELDS and (
+            not any(key.startswith(f'{prefix}_') for prefix in IGNORED_PREFIXES)
+            or key == '_old_archive_ids')
     }
 
     # display_id may be generated from id