I've used Chrome developer tools to inspect network activity and filter the mpd file. I've get the URL of the mpd with the context menu copy link address. But when I've assembled the youtube-dl command line it get HTTP Error 403: Forbidden.
So I've tried to add the --verbose option to get more information and found a warning "Could not send HEAD request" so I've assumed I needed to send also the headers. I can get the headers with the context menu copy as cURL in the mpd file listed in network activity inspector.
Downloading with curl works for the manifest, but how can I provide headers to youtube-dl to send them properly?