[VrtNU] Failed to parse JSON Invalid \escape

[vanhecke]

• I've verified and I assure that I'm running youtube-dl 2018.11.23
• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

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• Bug report (encountered problems with youtube-dl)

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λ bin\youtube-dl.exe https://www.vrt.be/vrtnu/a-z/van-gils-gasten/2018/van-gils---gasten-d20181128/ -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['https://www.vrt.be/vrtnu/a-z/van-gils-gasten/2018/van-gils---gasten-d20181128/', '-v']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2018.11.23
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.17763
[debug] exe versions: ffmpeg 4.1, ffprobe 4.1
[debug] Proxy map: {}
[VrtNU] van-gils---gasten-d20181128: Downloading webpage
WARNING: [VrtNU] van-gils---gasten-d20181128: Failed to parse JSON Invalid \escape: line 6 column 21 (char 107)
[VrtNU] van-gils---gasten-d20181128: Downloading JSON metadata
[Canvas] pbs-pub-1f459b76-47e5-4c30-873a-f2ef3145e768$vid-9cdbf9f5-e635-4d0a-b630-253d64ab9b95: Downloading JSON metadata
[Canvas] pbs-pub-1f459b76-47e5-4c30-873a-f2ef3145e768$vid-9cdbf9f5-e635-4d0a-b630-253d64ab9b95: Downloading m3u8 information
WARNING: Failed to download m3u8 information: <urlopen error [Errno 11001] getaddrinfo failed>
[Canvas] pbs-pub-1f459b76-47e5-4c30-873a-f2ef3145e768$vid-9cdbf9f5-e635-4d0a-b630-253d64ab9b95: Downloading MPD manifest
WARNING: Failed to download MPD manifest: <urlopen error [Errno 11001] getaddrinfo failed>
[Canvas] pbs-pub-1f459b76-47e5-4c30-873a-f2ef3145e768$vid-9cdbf9f5-e635-4d0a-b630-253d64ab9b95: Downloading ISM manifest
WARNING: Failed to download ISM manifest: <urlopen error [Errno 11001] getaddrinfo failed>
[Canvas] pbs-pub-1f459b76-47e5-4c30-873a-f2ef3145e768$vid-9cdbf9f5-e635-4d0a-b630-253d64ab9b95: Downloading f4m manifest
WARNING: Unable to download f4m manifest: <urlopen error [Errno 11001] getaddrinfo failed>
ERROR: No video formats found; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp6bh3thhm\build\youtube_dl\YoutubeDL.py", line 792, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp6bh3thhm\build\youtube_dl\extractor\common.py", line 508, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp6bh3thhm\build\youtube_dl\extractor\canvas.py", line 73, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp6bh3thhm\build\youtube_dl\extractor\common.py", line 1292, in _sort_formats
youtube_dl.utils.ExtractorError: No video formats found; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

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Most URLs on VrtNU work.
Both those two do not work, with the exact same json warning:

https://www.vrt.be/vrtnu/a-z/van-gils-gasten/2018/van-gils---gasten-d20181128/
https://www.vrt.be/vrtnu/a-z/van-gils-gasten/2018/van-gils---gasten-d20181129/

Perhaps the error is on this part of the webpage:

<script type="application/ld+json">
{
  "@context": "http://schema.org",
  "@id": "587301499527",
  "@type": "TVEpisode",
  "name": "Van Gils \x26 gasten 20181128",
  "episodeNumber": 0,
  "timeRequired": "PT48M",
  "description": "Michael Flatley is terug met \x27Lord of the Dance\x27\n",
  "publication": [
    {
      "@type": "BroadcastEvent",
      "publishedOn": {
        "@type": "BroadcastService",
        "brand": "een"
      },
      "startDate": "2018-11-28T22:05:00.000+01:00"
    },
    {
      "@type": "OnDemandEvent",
      "startDate": "1543439100",
      "endDate": "1546037700"
    }
  ],
  "partOfSeason": {
    "@type": "TVSeason",
    "seasonNumber": "2018"
  },
  "partOfSeries": {
    "@type": "TVSeries",
    "name": "Van Gils \x26 gasten"
  }
}
</script>