v_* urls are individual videos, while a_* urls are playlists, which are not supported yet.
See the comments in #5849
`og:description` is empty for some videos.
There are 2 TODOs. I don't know how to handle these cases correctly.
[qqmusic] Fix toplist extraction
Since 878563c847 the aes functions only accepts the base64 data as a unicode string.
878563c847
[nova] Update
This reverts commit 9464a194db.
9464a194db
For example, https://vid.me/Wmur contains more information than https://vid.me/e/Wmur
`og:description` does not contain actual description anymore.