NPO / zapp.nl - Failed to parse JSON

[6461]

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Checklist

• I'm reporting that yt-dlp is broken on a supported site
• I've verified that I'm running yt-dlp version 2023.10.13 (update instructions) or later (specify commit)
• I've checked that all provided URLs are playable in a browser with the same IP and same login details
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched known issues and the bugtracker for similar issues including closed ones. DO NOT post duplicates
• I've read the guidelines for opening an issue
• I've read about sharing account credentials and I'm willing to share it if required

Region

The Netherlands

Provide a description that is worded well enough to be understood

Downloading a program does not work. I'm using Proton VPN (free) and can access programs with Chrome browser.

Failed to parse JSON (caused by JSONDecodeError("Expecting value in '': line 1 column 1 (char 0)"))

Test URL: https://www.zapp.nl/programmas/checkpoint/gemist/VPWON_1268616

I have tried the release version 2023.10.13 and nightly@2023.11.07.231015 [10025b7]. Same issue with both of them.

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

[debug] Command-line config: ['-vU', 'https://www.zapp.nl/programmas/checkpoint/gemist/VPWON_1268616']
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version nightly@2023.11.07.231015 [10025b715] (win_exe)
[debug] Python 3.8.10 (CPython AMD64 64bit) - Windows-10-10.0.19045-SP0 (OpenSSL 1.1.1k  25 Mar 2021)
[debug] exe versions: ffmpeg 6.0-full_build-www.gyan.dev (setts), ffprobe 6.0-full_build-www.gyan.dev
[debug] Optional libraries: Cryptodome-3.19.0, brotli-1.1.0, certifi-2023.07.22, mutagen-1.47.0, requests-2.31.0, sqlite3-3.35.5, urllib3-2.0.7, websockets-12.0
[debug] Proxy map: {}
[debug] Request Handlers: urllib, requests
[debug] Loaded 1890 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
Available version: nightly@2023.11.07.231015, Current version: nightly@2023.11.07.231015
Current Build Hash: 4df736bdf04f79de60c985a9e9f007299caac14cf6656d6f058643ac6a16a321
yt-dlp is up to date (nightly@2023.11.07.231015)
[npo] Extracting URL: https://www.zapp.nl/programmas/checkpoint/gemist/VPWON_1268616
[npo] VPWON_1268616: Downloading token
[npo] VPWON_1268616: Downloading player JSON
ERROR: [npo] VPWON_1268616: VPWON_1268616: Failed to parse JSON (caused by JSONDecodeError("Expecting value in '': line 1 column 1 (char 0)")); 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 "yt_dlp\extractor\common.py", line 715, in extract
  File "yt_dlp\extractor\npo.py", line 222, in _real_extract
  File "yt_dlp\extractor\common.py", line 1069, in download_content
  File "yt_dlp\extractor\common.py", line 1039, in download_handle
  File "yt_dlp\extractor\common.py", line 1029, in parse
  File "yt_dlp\extractor\common.py", line 1016, in _parse_json
  File "yt_dlp\extractor\common.py", line 999, in __print_error

  File "yt_dlp\utils\_utils.py", line 555, in decode
  File "json\decoder.py", line 337, in decode
  File "json\decoder.py", line 355, in raw_decode
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "yt_dlp\extractor\common.py", line 1013, in _parse_json
  File "json\__init__.py", line 370, in loads
  File "yt_dlp\utils\_utils.py", line 563, in decode
json.decoder.JSONDecodeError: Expecting value in '': line 1 column 1 (char 0)

[bashonly]

Looks like the site's API has changed; the token endpoint URL now redirects to npostart.nl/start and the player API request gets redirected to the requested content's webpage

[benbenik]

Ik can confirm that this issue is still present for npo.nl, e.g. for link: https://npo.nl/start/serie/bij-van-duin-op-de-achterbank/seizoen-1/herman-finkers_19/afspelen

[mesa57]

Same here with other npostart links.

yt-dlp is up to date (stable@2023.12.30 from yt-dlp/yt-dlp)
[npo] Extracting URL: https://npo.nl/start/serie/close-up/seizoen-17/close-up-jdl-behind-the-wall
[npo] close-up-jdl-behind-the-wall: Downloading token
[npo] close-up-jdl-behind-the-wall: Downloading player JSON
ERROR: [npo] close-up-jdl-behind-the-wall: close-up-jdl-behind-the-wall: Failed to parse JSON (caused by JSONDecodeError("Expecting value in '': line 1 column 1 (char 0)")); 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 "yt_dlp\extractor\common.py", line 718, in extract
  File "yt_dlp\extractor\npo.py", line 222, in _real_extract
  File "yt_dlp\extractor\common.py", line 1072, in download_content
  File "yt_dlp\extractor\common.py", line 1042, in download_handle
  File "yt_dlp\extractor\common.py", line 1032, in parse
  File "yt_dlp\extractor\common.py", line 1019, in _parse_json
  File "yt_dlp\extractor\common.py", line 1002, in __print_error

  File "yt_dlp\utils\_utils.py", line 553, in decode
  File "json\decoder.py", line 337, in decode
  File "json\decoder.py", line 355, in raw_decode
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "yt_dlp\extractor\common.py", line 1016, in _parse_json
  File "json\__init__.py", line 370, in loads
  File "yt_dlp\utils\_utils.py", line 561, in decode
json.decoder.JSONDecodeError: Expecting value in '': line 1 column 1 (char 0)