Add support for innlandetfylke.no (videohost: CompanyCast)

[mrmidlmv]

Checklist

• I'm reporting a new site support request
• I've verified that I'm running youtube-dl version 2021.12.17
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that none of provided URLs violate any copyrights
• I've searched the bugtracker for similar site support requests including closed ones

Example URLs

• Single video [embed version]: https://innlandetfylke.no/politikk/aktuelt/nett-tv/#/innlandet/fylkestingsmoter/5e19lmwj
• Single video [host domain]: https://website-integration.companycast.live/innlandet/fylkestingsmoter/5e19lmwj
• Playlist: no playlists
• Video directory [list of all videoes hosted on this website]: https://innlandetfylke.no/politikk/aktuelt/nett-tv/#/innlandet

Description

WRITE DESCRIPTION HERE

This website is from the goverment region Innlandet in Norway and used for distribution of political meetings. The content is not under copyright and does not require login credentials.

The videos are hosted with CompanyCast. The videoes are embedded on the website. When going to the parent level and copying the url from clipboard the domain host link is given. At this time youtube-dl errors with "Unsupported URL"

The direct videolink is given in the info.json file under "vod_m3u8". For the example video. The link is given as: //cdn.companycast.live/https/companycast.live/files/priv/videos/133126/edited-2023-10-26_07-22-03.mp4/index.m3u8.

[dirkf]

So when the ancient Norwegians used to visit neighbouring countries and didn't get the respect they expected, or anyway, they were prone to slice open the guy's chest and spread his lungs out in what they saw as the form of an eagle. The developers of these sites deserve similar treatment: it's almost as if they're trying to hide local government business from the voters.
I think the way to handle these pages in yt-dl is:

• create an InnlandetFylkeIE to match URLs like the "embed version", extract the ID (5e19lmwj) and redirect to the equivalent "host domain" URL (where we hope there will be some metadata, because there's nothing useful in the original page)
• create a CompanyCastIE to match URLs like the "host domain" URL and then somehow find the media links and metadata which are also not in this page, apart from the <title>
• "somehow" seems to be to follow f'https://companycast.live/player/{video_id}/join', which redirects in this case to https://companycast.live/player/5e19lmwj/?SID=..., where everything is revealed!

To start with there are some useful HTML meta elements. But later in the JS we have var app = {...} where the data member of app is an extensive JSON object containing the vod_m3u8 and a lot of metadata, including chapters and participants. The info.json as mentioned (in this case https://cdn.companycast.live/http/companycast.live/player/5e19lmwj/info.json) is also listed, as dataUrl, but its content repeats the other members of the data object.

So finally, return an info_dict with the formats and metadata extracted from the data object.