Format selector `mergeall` to download and merge all formats

[youtube] Fix _extract_alerts

* Sometimes one warning is split between multiple runs
* Also simplified code

[nebula] Add extractor (watchnebula.com) (#122)

Authored by: hheimbuerger

[NFHSNetwork] Add extractor (#217)

Authored by: llacb47

[nitter] Fix extraction of reply tweets (#218)

And update instance list

Closes #215

Authored by: B0pol

[bilibili] Fix uploader
Related: https://github.com/yt-dlp/yt-dlp/issues/222

[youtube] Extract comments' approximate timestamp (#221)

Authored by: colethedj

[utils] Add `datetime_from_str` to parse relative time (#221)
and `datetime_add_months` to accurately add/subtract months

Authored by: colethedj

[nitter] Fix thumbnails (#216)

Authored by: B0pol

[DiscoveryPlusIndia] Add DiscoveryPlusIndiaShowIE (#213)

Co-authored-by: Ashish <redacted>
Co-authored-by: pukkandan <redacted>

Fix some `m3u8` not obeying `--allow-unplayable-formats`

[version] update

:ci skip all

Release 2021.04.03

Update to ytdl-commit-654b4f4

[youtube] prioritize information from YoutubeIE for playlist entries
https://github.com/ytdl-org/youtube-dl/commit/654b4f4ff2718f38b3182c1188c5d569c14cc70a

[YouTube] Show premium state in `availability` (#209)

Authored by colethedj

[documentation] Improve `--parse-metadata` documentation

Ability to set a specific field in the file's metadata

Eg: `--parse-metadata "description:(?s)(?P<meta_comment>.+)"`
sets the "comment" field using `description`

[ViewSource] Add extractor to handle `view-source:`

[mildom] Update extractor to comply with current proxy (#212)

Authored by nao20010128nao

[DiscoveryPlus] Add discoveryplus.in (#203)

Closes #201

Ability to select nth best format
Eg: -f `bv*.2`

* Also cleaned up the related format selection code

[generic] Detect Invidious' link element (Closes #195)

[ard:mediathek] Fix video id extraction (Closes #202)

Fix some typos and linter

[sponskrub] Run before embedding thumbnail
Workaround for https://github.com/faissaloo/SponSkrub/issues/29
Closes https://github.com/yt-dlp/yt-dlp/issues/204

Update to ytdl v2021-04-01
https://github.com/ytdl-org/youtube-dl/commit/14f29f087e6097feb46bdb84878924bc410a57eb

Closes #205

[la7] Add podcasts and podcast playlists (#198)

Authored by: nixxo

[version] update

Release 2021.03.24.1

Revert commit 8562218

[ard] improve clip id extraction
https://github.com/ytdl-org/youtube-dl/commit/8562218350a79d4709da8593bb0c538aa0824acf

This was merged incorrectly

Release 2021.03.24

Update to ytdl-commit-8562218

[ard] improve clip id extraction
https://github.com/ytdl-org/youtube-dl/commit/8562218350a79d4709da8593bb0c538aa0824acf

Parse metadata from multiple fields

Closes #196

[linuxacadamy] Fix login

Ability to load playlist infojson

* If `--no-clean-infojson` is given, the video ids are saved/loaded from in the infojson along with their playlist index
* If a video entry that was not saved is requested, we fallback to using `webpage_url` to re-extract the entries

Related: https://github.com/yt-dlp/yt-dlp/issues/190#issuecomment-804921024

Write current epoch to infojson when using `--no-clean-infojson`
Closes #191

[youtube_live_chat] fix bug when trying to set cookies
Closes #194

[niconico] Fix for when logged in

Related: https://github.com/yt-dlp/yt-dlp/issues/171#issuecomment-803692716
Co-authored by: CXwudi, xtkoba

[version] update

Release 2021.03.21

Update to ytdl-commit-7e79ba7

https://github.com/ytdl-org/youtube-dl/commit/7e79ba7dd6e6649dd2ce3a74004b2044f2182881
[vimeo:album] Fix extraction for albums with number of videos multiple to page size

[youtube] Show if video is `private`, `unlisted` etc in new field `availability` (#188)
Closes: #185, https://github.com/ytdl-org/youtube-dl/issues/25631
Authored by: colethedj, pukkandan

[linuxacadamy] Improve regex

TODO: We need to make a more robust standard regex for fetching js objects from html

[nbc] Improve metadata extraction (#187)

Authored by: 2ShedsJackson

[amcnetworks] Fix extractor (#179)

* Prefer use of manifest based on `releasePid` since the one based on `videoPid` may have Fairplay
* Additional thumbnail images were added
* Don't add `season_number` and `series` to `title`
* `series` is now set to `None` rather than "_" when empty
* fix bug with age limit

Authored by: 2ShedsJackson

[niconico] Add user extractor
Co-authored by: animelover1984

[bilibili] Add anthology support
Closes: #118
Co-authored by: animelover1984

More consistent warning messages (#173)
Co-authored by: Damiano Amatruda <redacted>

Embed video URL metadata inside MP4 (#173)

`mp4` has `comment` and `synopsis`; the synopsis is expected to have the long description
So we save the `webpage_url` to `comment` and `description` to `synopsis`

Related: https://github.com/ytdl-org/youtube-dl/issues/28478

Co-authored by: Damiano Amatruda <redacted>

Merge webm formats into mkv if thumbnails are to be embedded (#173)

Co-authored by: Damiano Amatruda <redacted>

Parse resolution in info dictionary (#173)

Use headers and cookies when downloading subtitles (#173)

[aria2c] Support retry/abort unavailable fragments (#173)

Co-authored by: Damiano Amatruda <redacted>

[aria2c] Better default arguments

Make sure `post_hook` gets the final filename

[documentation] Add `SplitChapters` to `--ppa`

[splitchapters] Fix for older ffmpeg

Older versions of ffmpeg doesn't allow `-to` as an input option
Closes #180

fix some typos and linter

[documentation] Add deprecated options and aliases in readme

Option to keep private keys in the infojson
Options: --clean-infojson, --no-clean-infojson

Related: https://github.com/yt-dlp/yt-dlp/issues/42#issuecomment-800778391

Recursively remove private keys from infojson
Related: https://github.com/yt-dlp/yt-dlp/issues/42

[movefiles] Fix bugs and make more robust

[youtube] bugfix for channel playlist extraction

Bug introduced in cd7c66cf014b3a5c3f7482dbcdda3343338f8d7c

[niconico] Partial fix

TODO:
Smile formats don't work
Extraction code that no longer works needs to be removed

Adapted from:
https://github.com/animelover1984/youtube-dl/commit/b5eff52dd9ed5565672ea1694b38c9296db3fade
by animelover1984

Related:
https://github.com/yt-dlp/yt-dlp/issues/171
https://github.com/animelover1984/youtube-dl/issues/29
https://github.com/ytdl-org/youtube-dl/issues/28470

[stitcher] Merge from youtube-dl (#175)

This cherry-picks the commits:
https://github.com/ytdl-org/youtube-dl/commit/a563c97c5cddf55f8989ed7ea8314ef78e30107f#diff-cc37718b18689c1c0588c4c74518853ef43ab020bbd674f3c04d4eae037798d2
https://github.com/ytdl-org/youtube-dl/commit/8522bcd97c4173407261a3fa0283dd7800c39601#diff-cc37718b18689c1c0588c4c74518853ef43ab020bbd674f3c04d4eae037798d2

Authored by: nixxo

[rcs] Improved extraction (See desc) (#170)

* improved `video_data` extraction
* added an extra fallback value for `description`
* improved regex in `RCSVariousIE`

Authored by: nixxo

[formatSort] Fix `quality` being ignored
Closes #172

[sponskrub] Pass proxy to sponskrub

Needs atleast sponskrub version:
    faissaloo/sponskrub 3.7.0
    OR yt-dlp/sponskrub 2021.03.15

[version] update

:ci skip all

Release 2021.03.15

Update to ytdl-commit-3be0980
https://github.com/ytdl-org/youtube-dl/commit/3be098010f667b14075e3dfad1e74e5e2becc8ea

Split video by chapters (#158)

* New options `--split-chapters` and `--no-split-chapters`
* The output/path of the split files can be given using the key `chapter`
* Additional keys `section_title`, `section_number`, `section_start`, `section_end` are available in the output template
* Alias `--split-tracks` for parity with animelover/youtube-dl
* `--sponskrub-cut` and `--split-chapter` cannot work together

Closes:
https://github.com/blackjack4494/yt-dlc/issues/277
https://github.com/ytdl-org/youtube-dl/issues/28438
https://github.com/ytdl-org/youtube-dl/issues/12907
https://github.com/ytdl-org/youtube-dl/issues/6480
https://github.com/ytdl-org/youtube-dl/pull/25005

Rewritten from the implementation by: femaref and Wattux
https://github.com/Wattux/youtube-dl/tree/split-at-timestamps
https://github.com/ytdl-org/youtube-dl/pull/25005
https://github.com/femaref/youtube-dl/tree/split-track

[Youtube] Rewrite comment extraction (#167)

Closes #121

TODO:
* Add an option for the user to specify newest/popular and max number of comments
* Refactor the download code and generalize with TabIE
* Parse time_text to timestamp

[embedthumbnail] Set mtime correctly
Related: https://github.com/yt-dlp/yt-dlp/issues/67

Refactor (See desc)

* Create `FFmpegPostProcessor.real_run_ffmpeg` that can accept multiple input/output files along with switches for each
* Rewrite `cli_configuration_args` and related functions
* Create `YoutubeDL._ensure_dir_exists` - this was previously defined in multiple places

[pluto.tv] Add extractor (#163)
https://github.com/ytdl-org/youtube-dl/pull/27621

Authored by: kevinoconnor7

[zee5] Support zee5originals

[rai] fix drm check (#168)

Bug introduced by #150
Authored by: nixxo

Native concurrent downloading of fragments (#166)

* Option `--concurrent-fragments` (`-N`) to set the number of threads

Related: #165

Known issues:
* When receiving Ctrl+C, the process will exit only after finishing the currently downloading fragments
* The download progress shows the speed of only one thread

Authored by shirt-dev

More improvements to HLS/DASH external downloader code

* Fix error when there is no `protocol` in `info_dict`
* Move HLS byte range detection to `Aria2cFD` so that the download will fall back to the native downloader instead of ffmpeg
* Fix bug with getting no fragments in DASH
* Convert `check_results` in `can_download` to a generator

[wimtv] Add extractor (#161)

Added support for VODs, live and embeds

Authored by: nixxo

[Zee5] Add Show Extractor (#160)

Co-authored-by: Ashish <redacted>
Co-authored-by: pukkandan <redacted>

Improve HLS/DASH external downloader code (#162)

Authored by: shirt

[zee5] Improve regex

[mtv] Add mtv.it and extract series metadata (#156)

* New extractors: MTVItalia, MTVItaliaProgramma
* Extract fields: series, season_number, episode_number

Authored-by: nixxo

[version] update :ci skip all

Release 2021.03.07

[vimeo] Fix videos with password
https://github.com/ytdl-org/youtube-dl/pull/27992

Fixes: https://github.com/ytdl-org/youtube-dl/issues/28354
Authored by teesid

Fix some videos downloading with m3u8 extension

[bilibili] Change `Accept` header (Closes #145)

This is a temporary fix. Ideally we should find a more reasonable accept string that just "*/*"

Fixes: https://github.com/ytdl-org/youtube-dl/issues/28363 https://github.com/ytdl-org/youtube-dl/issues/28341
Thanks to animelover1984 for identifying the problem

[Documentation] Inclusion of two-line install script for Unix (#155)

Closes #83
Authored-by: Ashish <redacted>
ci skip all

[rai] Check for DRM (#150)

Authored by: nixxo <redacted>

Remove "fixup is ignored" warning when fixup wasn't passed by user
Closes #151

[youtube] Detect when Mixes end or wrap around

[youtube] Fix community page continuation (Closes #152)

[gedi] Improvements from youtube-dl (#149)

Authored-by: nixxo <redacted>

[MXPlayer] Rewrite extractor with show support (#141)

Co-authored-by: Ashish <redacted>
Co-authored-by: pukkandan <redacted>

[Youtube] Fix private feeds/playlists on multi-channel accounts (#143)

Authored by: colethedj

[Youtube] Extract alerts from continuation (#144)

Related: #143

Authored by: colethedj

[downloader] Fix bug for ffmpeg/httpie
Caused by: 7f7de7f94dfeacb0eb78cb9487dfcaf5707da381