[BUG] unable to download due to youtube-dl error about savify HOT 3 OPEN

Had the same issue. There is a pull request with a fix. Essentially replacing youtube-dl module with yt-dlp.

from savify.

I'm getting a very similar problem, Could not find JS function 'na' (instead of 'sa').

Verbose:
youtube-dl --verbose --extract-audio --audio-format mp3 https://www.youtube.com/watch?v=ugxQPwXhwJA
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--extract-audio', '--audio-format', 'mp3', 'https://www.youtube.com/watch?v=ugxQPwXhwJA']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.9.2 (CPython) - Linux-5.18.0-0.deb11.4-amd64-x86_64-with-glibc2.31
[debug] exe versions: ffmpeg 4.3.5-0, ffprobe 4.3.5-0, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] ugxQPwXhwJA: Downloading webpage
[youtube] ugxQPwXhwJA: Downloading player dac945fd
ERROR: Signature extraction failed: Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1348, in _decrypt_signature
func = self._extract_signature_function(
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1262, in _extract_signature_function
res = self._parse_sig_js(code)
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1331, in _parse_sig_js
initial_function = jsi.extract_function(funcname)
File "/usr/lib/python3/dist-packages/youtube_dl/jsinterp.py", line 245, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'sa'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
(caused by ExtractorError("Could not find JS function 'sa'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.")); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1348, in _decrypt_signature
func = self._extract_signature_function(
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1262, in _extract_signature_function
res = self._parse_sig_js(code)
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1331, in _parse_sig_js
initial_function = jsi.extract_function(funcname)
File "/usr/lib/python3/dist-packages/youtube_dl/jsinterp.py", line 245, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'sa'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1348, in _decrypt_signature
func = self._extract_signature_function(
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1262, in _extract_signature_function
res = self._parse_sig_js(code)
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1331, in _parse_sig_js
initial_function = jsi.extract_function(funcname)
File "/usr/lib/python3/dist-packages/youtube_dl/jsinterp.py", line 245, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'sa'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/youtube_dl/YoutubeDL.py", line 815, in wrapper
return func(self, *args, **kwargs)
File "/usr/lib/python3/dist-packages/youtube_dl/YoutubeDL.py", line 836, in __extract_info
ie_result = ie.extract(url)
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 534, in extract
ie_result = self._real_extract(url)
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1623, in _real_extract
signature = self._decrypt_signature(sc['s'][0], video_id, player_url)
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1358, in _decrypt_signature
raise ExtractorError(
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1348, in _decrypt_signature
func = self._extract_signature_function(
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1262, in _extract_signature_function
res = self._parse_sig_js(code)
File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1331, in _parse_sig_js
initial_function = jsi.extract_function(funcname)
File "/usr/lib/python3/dist-packages/youtube_dl/jsinterp.py", line 245, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'sa'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
(caused by ExtractorError("Could not find JS function 'sa'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.")); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

from savify.

Same thing.

from savify.