Repository: yt-dlp
Issue: Unable to download the video the error message goes like Unable to extract flashvars - Failed to parse JSON
Labels: NSFW,site-bug,triage

### DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE

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

### Checklist

- [X] I'm reporting that yt-dlp is broken on a **supported** site
- [X] I've verified that I have **updated yt-dlp to nightly or master** ([update instructions](https://github.com/yt-dlp/yt-dlp#update-channels))
- [X] I've checked that all provided URLs are playable in a browser with the same IP and same login details
- [X] I've checked that all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/yt-dlp/yt-dlp/wiki/FAQ#video-url-contains-an-ampersand--and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
- [X] I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and 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)
- [X] 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_

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

Unable to extract flashvars - Failed to parse JSON (caused by JSONDecodeError('Expecting \',\' delimiter in \'eywords=" + "current\': line 33 column 83 (char 6760)')); please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template.

Version:
Latest version: nightly@2025.01.12.232754 from yt-dlp/yt-dlp-nightly-builds

Command:
yt-dlp -f bestvideo+bestaudio/best --merge-output-format mkv --user-agent "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0" --referer "https://www.youtube.com" --add-header "Accept-Language: en-US,en;q=0.9" --add-header "DNT: 1" --add-header "Connection: keep-alive" --no-check-certificate --cookies-from-browser firefox --extractor-args "generic:impersonate" --download-archive "C:\Users\rajesh\user0\OK\Scripts\Downloder\Logs\yt-dlp - logs.txt" --progress --console-title --ignore-errors --no-warnings -o "%(title)s.%(ext)s" --exec "echo {} >> C:\Users\rajesh\user0\OK\Scripts\Downloder\Logs\yt-dlp - logs.txt" --download-sections "*00:00-" "https://zbporn.com/videos/639682/hot-indian-girl-gives-a-nice-blowjob-to-a-big-dick/"

### Provide verbose output that clearly demonstrates the problem

- [X] 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
- [X] Copy the WHOLE output (starting with `[debug] Command-line config`) and insert it below

### Complete Verbose Output

```shell
[debug] Command-line config: ['-f', 'bestvideo+bestaudio/best', '--merge-output-format', 'mkv', '--user-agent', 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0', '--referer', 'https://www.youtube.com', '--add-header', 'Accept-Language: en-US,en;q=0.9', '--add-header', 'DNT: 1', '--add-header', 'Connection: keep-alive', '--no-check-certificate', '--cookies-from-browser', 'firefox', '--extractor-args', 'generic:impersonate', '--download-archive', 'C:\\Users\\rajesh\\user0\\OK\\Scripts\\Downloder\\Logs\\yt-dlp - logs.txt', '--progress', '--console-title', '--ignore-errors', '--no-warnings', '-o', '%(title)s.%(ext)s', '--exec', 'echo {} >> C:\\Users\\rajesh\\user0\\OK\\Scripts\\Downloder\\Logs\\yt-dlp - logs.txt', '--download-sections', '*00:00-', 'https://zbporn.com/videos/639682/hot-indian-girl-gives-a-nice-blowjob-to-a-big-dick/', '-vU']
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version nightly@2025.01.12.232754 from yt-dlp/yt-dlp-nightly-builds [dade5e35c] (win_exe)
[debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.26100-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
[debug] exe versions: ffmpeg n7.1-152-gd72536008a-20250113 (setts), ffprobe n7.1-152-gd72536008a-20250113
[debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.12.14, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.3.0, websockets-14.1
[debug] Proxy map: {}
Extracting cookies from firefox
[debug] Extracting cookies from: "C:\Users\rajesh\AppData\Roaming\Mozilla\Firefox\Profiles\k777fhsd.default-release-1731233125162\cookies.sqlite"
Extracted 848 cookies from firefox
[debug] Request Handlers: urllib, requests, websockets, curl_cffi
[debug] Loaded 1837 extractors
[debug] Loading archive file 'C:\\Users\\rajesh\\user0\\OK\\Scripts\\Downloder\\Logs\\yt-dlp - logs.txt'
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
Latest version: nightly@2025.01.12.232754 from yt-dlp/yt-dlp-nightly-builds
yt-dlp is up to date (nightly@2025.01.12.232754 from yt-dlp/yt-dlp-nightly-builds)
[generic] Extracting URL: https://zbporn.com/videos/639682/hot-indian-girl-gives-a-nice-blowjob-to-a-big-dick/
[generic] hot-indian-girl-gives-a-nice-blowjob-to-a-big-dick: Downloading webpage
[generic] hot-indian-girl-gives-a-nice-blowjob-to-a-big-dick: Extracting information
[debug] Looking for embeds
[debug] Identified a KVS Player
ERROR: [generic] hot-indian-girl-gives-a-nice-blowjob-to-a-big-dick: Unable to extract flashvars - Failed to parse JSON (caused by JSONDecodeError('Expecting \',\' delimiter in \'eywords=" + "current\': line 33 column 83 (char 6760)')); 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 742, in extract
  File "yt_dlp\extractor\generic.py", line 2548, in _real_extract
  File "yt_dlp\extractor\generic.py", line 2677, in _extract_embeds
  File "yt_dlp\extractor\generic.py", line 2294, in _extract_kvs
  File "yt_dlp\extractor\common.py", line 1371, in _search_json

  File "yt_dlp\utils\_utils.py", line 564, in decode
  File "json\decoder.py", line 353, in raw_decode
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 33 column 83 (char 6760)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "yt_dlp\extractor\common.py", line 1091, in _parse_json
  File "json\__init__.py", line 359, in loads
  File "yt_dlp\utils\_utils.py", line 573, in decode
json.decoder.JSONDecodeError: Expecting ',' delimiter in 'eywords=" + "current': line 33 column 83 (char 6760)
```