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When running the program, the following error message may appear: “raise ExtractorError(‘Could not find JS function percent r’ percent funcname) youtube-dl.utils.ExtractorError: Could not find JS function ‘na'”.
This is a common error that all developers make. So, what causes this, and how can it be resolved? We’ll go over everything with you.
Why Does This Problem “raise ExtractorError(‘Could not find JS function %r’ % funcname) youtube_dl.utils.ExtractorError: Could not find JS function ‘na’” Occur?
You cannot download YouTube videos using the python package youtube-dl. And you are having the following problem.
raise ExtractorError(‘Could not find JS function %r’ % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function ‘na’;
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.
Some Basic Methods
Solution 1: Use yt-dlp rather than youtube_dl
Use yt-dlp instead of youtube dl. Here’s the order.
from youtube_dl import YoutubeDL, utils # DO NOT USE THIS
Solution 2: Upgrade the youtube-dl
Try updating youtube-dl to the most recent version. The most recent version is 2021.12.17. ( Dec 17, 2021 ). Then, you can execute this command.
pip install --upgrade youtube-dl
Alternatively, install the most recent version.
pip install youtube_dl==2021.12.17
Solution 3: Execute the command
Run this command with the provided branch. Here’s the order.
git clone --depth 1 --branch fix-function-sig-parser https://github.com/lanegramling/youtube-dl.git
cd youtube-dl
python3 -m pip install -e . --user
Solution 4: Use the alternative
Pytube is one of the alternatives. Now, you need to run this command to install it. Your error must now be corrected.
pip install pytube
Conclusion
The following solution has proven to be the most effective for those who are still perplexed by this issue: “raise ExtractorError(‘Could not find JS function percent r’ percent funcname) youtube-dl.utils.ExtractorError: Could not find JS function ‘na'”.
If you still need our support or have regular Python questions, we have an active community where everyone is always willing to assist. Finally, we wish you a wonderful day filled with creative code solutions.
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