A description of the various files are in the README

Changelog:

• Merge youtube-dl: Upto commit/6508688 (except NDR)
• Add regex operator and quoting to format filters by lukasfink1
• Add brotli content-encoding support by coletdjnz
• Add pre-processor stage after_filter
• Better error message when no --live-from-start format
• Create necessary directories for --print-to-file
• Fill more fields for playlists by Lesmiscore
• Fix -all for --sub-langs
• Fix doubling of video_id in ExtractorError
• Fix for when stdout/stderr encoding is None
• Handle negative duration from extractor
• Implement --add-header without modifying std_headers
• Obey --abort-on-error for "ffmpeg not installed"
• Set webpage_url_... from webpage_url and not input URL
• Tolerate failure to --write-link due to unknown URL
• [aria2c] Add --http-accept-gzip=true
• [build] Update pyinstaller to 4.10 by shirt-dev
• [cookies] Update MacOS12 Cookies.binarycookies location by mdpauley
• [devscripts] Improve prepare_manpage
• [downloader] Do not use aria2c for non-native m3u8
• [downloader] Obey --file-access-retries when deleting/renaming by ehoogeveen-medweb
• [extractor] Allow http_headers to be specified for thumbnails
• [extractor] Extract subtitles from manifests for vimeo, globo, kaltura, svt by fstirlitz
• [extractor] Fix for manifests without period duration by dirkf, pukkandan
• [extractor] Support --mark-watched without _NETRC_MACHINE by coletdjnz
• [FFmpegConcat] Abort on --simulate
• [FormatSort] Consider acodec=ogg as vorbis
• [fragment] Fix bugs around resuming with Range by Lesmiscore
• [fragment] Improve --live-from-start for YouTube livestreams by Lesmiscore
• [generic] Pass referer to extracted formats
• [generic] Set rss guid as video id by Bricio
• [options] Better ambiguous option resolution
• [options] Rename --clean-infojson to --clean-info-json
• [SponsorBlock] Fixes for highlight and "full video labels" by nihil-admirari
• [Sponsorblock] minor fixes by nihil-admirari
• [utils] Better traceback for ExtractorError
• [utils] Fix file locking for AOSP by jakeogh
• [utils] Improve file locking
• [utils] OnDemandPagedList: Do not download pages after error
• [utils] render_table: Fix character calculation for removing extra gap by Lesmiscore
• [utils] Use locked_file for sanitize_open by jakeogh
• [utils] Validate DateRange input
• [utils] WebSockets wrapper for non-async functions by Lesmiscore
• [cleanup] Don't pass protocol to _extract_m3u8_formats for live videos
• [cleanup] Remove extractors for some dead websites by marieell
• [cleanup, docs] Misc cleanup
• [AbemaTV] Add extractors by Lesmiscore
• [adobepass] Add Suddenlink MSO by CplPwnies
• [ant1newsgr] Add extractor by zmousm
• [bigo] Add extractor by Lesmiscore
• [Caltrans] Add extractor by Bricio
• [daystar] Add extractor by hatienl0i261299
• [fc2:live] Add extractor by Lesmiscore
• [fptplay] Add extractor by hatienl0i261299
• [murrtube] Add extractor by cyberfox1691
• [nfb] Add extractor by ofkz
• [niconico] Add playlist extractors and refactor by Lesmiscore
• [peekvids] Add extractor by schn0sch
• [piapro] Add extractor by pycabbage, Lesmiscore
• [rokfin] Add extractor by P-reducible, pukkandan
• [rokfin] Add stack and channel extractors by P-reducible, pukkandan
• [ruv.is] Add extractor by iw0nderhow
• [telegram] Add extractor by hatienl0i261299
• [VideocampusSachsen] Add extractors by FestplattenSchnitzel
• [xinpianchang] Add extractor by hatienl0i261299
• [abc] Support 1080p by Ronnnny
• [afreecatv] Support password-protected livestreams by wlritchi
• [ard] Fix valid URL
• [ATVAt] Detect geo-restriction by marieell
• [bandcamp] Detect acodec
• [bandcamp] Fix user URLs by lyz-code
• [bbc] Fix extraction of news articles by ajj8
• [beeg] Fix extractor by Bricio
• [bigo] Fix extractor to not to use form_params
• [Bilibili] Pass referer for all formats by blackgear
• [Biqle] Fix extractor by Bricio
• [ccma] Fix timestamp parsing by nyuszika7h
• [crunchyroll] Better error reporting on login failure by tejing1
• [cspan] Support of C-Span congress videos by Grabien
• [dropbox] fix regex by zenerdi0de
• [fc2] Fix extraction by Lesmiscore
• [fujitv] Extract resolution for free sources by YuenSzeHong
• [Gettr] Add GettrStreamingIE by i6t
• [Gettr] Fix formats order by i6t
• [Gettr] Improve extractor by i6t
• [globo] Expand valid URL by Bricio
• [lbry] Fix --ignore-no-formats-error
• [manyvids] Extract uploader by regarten
• [mildom] Fix linter
• [mildom] Rework extractors by Lesmiscore
• [mirrativ] Cleanup extractor code by Lesmiscore
• [nhk] Add support for NHK for School by Lesmiscore
• [niconico:tag] Add support for searching tags
• [nrk] Add fallback API
• [peekvids] Use JSON-LD by schn0sch
• [peertube] Add media.fsfe.org by mxmehl
• [rtvs] Fix extractor by Bricio
• [spiegel] Fix _VALID_URL
• [ThumbnailsConvertor] Support webp
• [tiktok] Fix vm.tiktok/vt.tiktok URLs
• [tubitv] Fix/improve TV series extraction by bbepis
• [tumblr] Fix extractor by foghawk
• [twitcasting] Add fallback for finding running live by Lesmiscore
• [TwitCasting] Check for password protection by Lesmiscore
• [twitcasting] Fix extraction by Lesmiscore
• [twitch] Fix field name of view_count
• [twitter] Fix for private videos by iphoting
• [washingtonpost] Fix extractor by Bricio
• [youtube:tab] Add approximate_date extractor-arg
• [youtube:tab] Follow redirect to regional channel by coletdjnz
• [youtube:tab] Reject webpage data if redirected to home page
• [youtube] De-prioritize potentially damaged formats
• [youtube] Differentiate descriptive audio by language code
• [youtube] Ensure subtitle urls are absolute by coletdjnz
• [youtube] Escape possible $ in _extract_n_function_name regex by Lesmiscore
• [youtube] Fix automatic captions
• [youtube] Fix n-sig extraction for phone player JS by MinePlayersPE
• [youtube] Further de-prioritize 3gp format
• [youtube] Label original auto-subs
• [youtube] Prefer UTC upload date for videos by coletdjnz
• [zaq1] Remove dead extractor by marieell
• [zee5] Support web-series by Aniruddh-J
• [zingmp3] Fix extractor by hatienl0i261299
• [zoom] Add support for screen cast by Mipsters