Use `'-join()'` here, or `{0}`, ..., in general.

* Implement extractor for KTH play
* Make KTH Play url regex more relaxed

Resolves #30856.

From https://github.com/yt-dlp/yt-dlp/pull/3272
Closes https://github.com/yt-dlp/yt-dlp/issues/3270
Authored by: nixxo

* initial support for creating direct mp4 link
* improved regexes and info extraction
* added "connection: close" to request headers
* updated to https://github.com/yt-dlp/yt-dlp/pull/208

reviewed by pukkandan (https://github.com/yt-dlp/yt-dlp/pull/150)

... and generate warning

Ensures download tests pass in Python 2 as well as 3; also
add YoutubeDL tests for timestamp -> upload_date etc.

Pattern needed a non-greedy match; also replaced a redundant test with one for this, issue 29690

CPACIE: single episode
CPACPlaylistIE: playlists and searches

* Fixed groups() call on potentially empty regex search object.
- https://github.com/ytdl-org/youtube-dl/issues/30521



* minimising lines changed

Co-authored-by: yayorbitgum <50963144+yayorbitgum@users.noreply.github.com>

* [bigo] add support for bigo.tv

* [bigo] prepend "Bigo says"

* title fallback

* add error for invalid json data

* [rutv] use str_to_int() (thx dirkf)

Cherry-picked-from: 7d449fff5346 ("[streamcz] Fix extractor (#1616)")

Authored by: nyuszika7h

Fixes #30416

Back-port yt-dlp PR 1022 onto PR #17890 and update

Video details aren't in the original HTML now but populated by async JS

Co-authored by: u-spec-png
Co-authored by: vidaritos

Authored by: fstirlitz
Fixes #30543
Closes #17766 (thanks ngdio)

Mistakenly forgot to edit a line in last commit.

Co-authored-by: dirkf <fieldhouse@gmx.net>

Co-authored-by: dirkf <fieldhouse@gmx.net>

Add test and fix test for bbcthreeConfig

Add Nico search extractors, fix extraction