Spotify podcast download support

[joonas-foo]

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Hi! Would you add support for downloading Spotify podcasts? Like this podcast:

https://open.spotify.com/episode/3zqQZaet8MKdbeXF9Z9guF

I found a messy tool for Linux, possibly Spotdl, but it didn't do the task either.

Provide verbose output that clearly demonstrates the problem

• Run your yt-dlp command with -vU flag added (yt-dlp -vU <your command line>)
• If using API, add 'verbose': True to YoutubeDL params instead
• Copy the WHOLE output (starting with [debug] Command-line config) and insert it below

Complete Verbose Output

joonas@joonas-MS-7D95:~$ yt-dlp -vU https://open.spotify.com/episode/3zqQZaet8MKdbeXF9Z9guF
[debug] Command-line config: ['-vU', 'https://open.spotify.com/episode/3zqQZaet8MKdbeXF9Z9guF']
[debug] Encodings: locale UTF-8, fs utf-8, pref UTF-8, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version nightly@2024.04.21.232710 from yt-dlp/yt-dlp-nightly-builds [ff38a011d] (pip)
[debug] Python 3.11.6 (CPython x86_64 64bit) - Linux-6.5.0-21-generic-x86_64-with-glibc2.38 (OpenSSL 3.0.10 1 Aug 2023, glibc 2.38)
[debug] exe versions: ffmpeg 6.0 (setts), ffprobe 6.0, rtmpdump 2.4
[debug] Optional libraries: Cryptodome-3.11.0, brotli-1.0.9, certifi-2022.09.24, mutagen-1.47.0, requests-2.31.0, secretstorage-3.3.3, sqlite3-3.42.0, urllib3-2.2.1, websockets-12.0, xattr-0.10.1
[debug] Proxy map: {}
[debug] Request Handlers: urllib, requests, websockets
[debug] Loaded 1810 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
Latest version: nightly@2024.04.21.232710 from yt-dlp/yt-dlp-nightly-builds
yt-dlp is up to date (nightly@2024.04.21.232710 from yt-dlp/yt-dlp-nightly-builds)
WARNING: The program functionality for this site has been marked as broken, and will probably not work.
[spotify] Downloading JSON metadata
[spotify] Extracting URL: https://open.spotify.com/episode/3zqQZaet8MKdbeXF9Z9guF
[spotify] 3zqQZaet8MKdbeXF9Z9guF: Downloading JSON metadata
ERROR: [spotify] 3zqQZaet8MKdbeXF9Z9guF: Unable to download JSON metadata: HTTP Error 400: Bad Request (caused by <HTTPError 400: Bad Request>)
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/extractor/common.py", line 734, in extract
    ie_result = self._real_extract(url)
                ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/extractor/spotify.py", line 126, in _real_extract
    episode = self._call_api('Episode', episode_id, {
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/extractor/spotify.py", line 34, in _call_api
    return self._download_json(
           ^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/extractor/common.py", line 1127, in download_content
    res = getattr(self, download_handle.__name__)(url_or_request, video_id, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/extractor/common.py", line 1087, in download_handle
    res = self._download_webpage_handle(
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/extractor/common.py", line 954, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/extractor/common.py", line 903, in _request_webpage
    raise ExtractorError(errmsg, cause=err)

  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/extractor/common.py", line 890, in _request_webpage
    return self._downloader.urlopen(self._create_request(url_or_request, data, headers, query, extensions))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/YoutubeDL.py", line 4131, in urlopen
    return self._request_director.send(req)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/networking/common.py", line 115, in send
    response = handler.send(request)
               ^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/networking/_helper.py", line 208, in wrapper
    return func(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/networking/common.py", line 335, in send
    return self._send(request)
           ^^^^^^^^^^^^^^^^^^^
  File "/home/joonas/.local/lib/python3.11/site-packages/yt_dlp/networking/_requests.py", line 350, in _send
    raise HTTPError(res, redirect_loop=max_redirects_exceeded)
yt_dlp.networking.exceptions.HTTPError: HTTP Error 400: Bad Request

[fireattack]

I don't think currently yt-dlp supports Spotify at all since all the audio files are now encrypted (DRM'd), including podcasts.

It was well discussed at #943.

If by spotDL you mean https://github.com/spotDL/spotify-downloader , it was done by matching the song with YouTube and download from there, which has no DRM.