代码：
import tempfile
import youtube_dl
link = "https://www.reddit.com/r/CatastrophicFailure/comments/mhqgso/industrial_fire_in_volendam_netherlands_3132021/?utm_source=share&utm_medium=web2x&context=3"
with tempfile.TemporaryDirectory() as tempdir:
settings = {
'verbose': True,
'noplaylist': True,
'format': 'best',
'outtmpl': f'{tempdir}/%(id)s.%(ext)s'
}
with youtube_dl.YoutubeDL(settings) as ytdl:
meta = ytdl.extract_info(
link,
download=True
)
错误：
[debug] Encodings: locale cp1252, fs utf-8, out utf-8, pref cp1252
[debug] youtube-dl version 2021.03.31
[debug] Python version 3.8.5 (CPython) - Windows-10-10.0.19041-SP0
[debug] exe versions: ffmpeg git-2020-08-31-4a11a6f, ffprobe git-2020-08-31-4a11a6f
[debug] Proxy map: {}
[RedditR] mhqgso: Downloading JSON metadata
[Reddit] hlrzahmcqiq61: Downloading m3u8 information
[Reddit] hlrzahmcqiq61: Downloading MPD manifest
ERROR: requested format not available
Traceback (most recent call last):
File "C:UsersUserAppDataLocalProgramsPythonPython38libsite-packagesyoutube_dlYoutubeDL.py", line 806, in wrapper
return func(self, *args, **kwargs)
File "C:UsersUserAppDataLocalProgramsPythonPython38libsite-packagesyoutube_dlYoutubeDL.py", line 838, in __extract_info
return self.process_ie_result(ie_result, download, extra_info)
File "C:UsersUserAppDataLocalProgramsPythonPython38libsite-packagesyoutube_dlYoutubeDL.py", line 909, in process_ie_result
return self.process_ie_result(
File "C:UsersUserAppDataLocalProgramsPythonPython38libsite-packagesyoutube_dlYoutubeDL.py", line 872, in process_ie_result
return self.process_video_result(ie_result, download=download)
File "C:UsersUserAppDataLocalProgramsPythonPython38libsite-packagesyoutube_dlYoutubeDL.py", line 1674, in process_video_result
raise ExtractorError('requested format not available',
youtube_dl.utils.ExtractorError: requested format not available
为什么我会收到此错误？我知道格式 'best' 应该可以查看 docs 并且我不知道我是否在这里遗漏了一些愚蠢的东西。
据我了解，错误的原因是链接（URL）而不是视频格式。该 URL 不指向视频，而是指向显示视频和其他内容的 reddit 页面。
我不确定如何将 youtube-dl 与 reddit 视频一起使用，或者是否可以选择。但是，快速查看我的 Waterfox（基于 Firefox 的浏览器）中的 Page info > Media 会显示视频的直接 URL 为 https://v.redd.it/hlrzahmcqiq61/DASH_96.mp4 ，可以使用“另存为”按钮进行保存。