Youtube-dl

Core
+ [postprocessor/ffmpeg] Add support for flac
+ [extractor/common] Extract SMIL formats from jwplayer

Extractors
+ [generic] Add forgotten return for jwplayer formats
* [redbulltv] Improve extraction

Core
* Fix missing subtitles if --add-metadata is used (12423)

Extractors
* [facebook] Make title optional (12443)
+ [mitele] Add support for ooyala videos (12430)
* [openload] Fix extraction (12435, 12446)
* [streamable] Update API URL (12433)
+ [crunchyroll] Extract season name (12428)
* [discoverygo] Bypass geo restriction
+ [discoverygo:playlist] Add support for playlists (12424)

Extractors
* [generic] Make title optional for jwplayer embeds (12410)
* [wdr:maus] Fix extraction (12373)
* [prosiebensat1] Improve title extraction (12318, 12327)
* [dplayit] Separate and rewrite extractor and bypass geo restriction (12393)
* [miomio] Fix extraction (12291, 12388, 12402)
* [telequebec] Fix description extraction (12399)
* [openload] Fix extraction (12357)
* [brightcove:legacy] Relax videoPlayer validation check (12381)

Core
* Metadata are now added after conversion (5594)

Extractors
* [soundcloud] Update client id (12376)
* [openload] Fix extraction (10408, 12357)

Core
+ [utils] Process bytestrings in urljoin (12369)
* [extractor/common] Improve height extraction and extract bitrate
* [extractor/common] Move jwplayer formats extraction in separate method
+ [external:ffmpeg] Limit test download size to 10KiB (12362)

Extractors
+ [drtv] Add geo countries to GeoRestrictedError
+ [drtv:live] Bypass geo restriction
+ [tunepk] Add extractor (12197, 12243)

Extractors
+ [twitch] Add basic support for two-factor authentication (11974)
+ [vier] Add support for vijf.be (12304)
+ [redbulltv] Add support for redbull.tv (3919, 11948)
* [douyutv] Switch to the PC API to escape the 5-min limitation (12316)
+ [generic] Add support for rutube embeds
+ [rutube] Relax URL regular expression
+ [vrak] Add support for vrak.tv (11452)
+ [brightcove:new] Add ability to smuggle geo_countries into URL
+ [brightcove:new] Raise GeoRestrictedError
* [go] Relax URL regular expression (12341)
* [24video] Use original host for requests (12339)
* [ruutu] Disable DASH formats (12322)