$ streamlink --http-proxy socks5h://localhost:1920 'https://www.dailymotion.com/video/x2lefik'
[cli][info] Found matching plugin dailymotion for URL https://www.dailymotion.com/video/x2lefik
Available streams: 180p_alt2 (worst), 180p_alt, 180p, 288p_alt2, 288p_alt, 288p, 477p_alt2, 477p_alt, 477p, 720p_alt2, 720p_alt, 720p, 1080p_alt, 1080p (best)

$ streamlink -j --http-proxy socks5h://localhost:1920 'https://www.dailymotion.com/video/x2lefik' | jq .metadata
{
  "id": "x2lefik",
  "author": "lachainelequipe",
  "category": null,
  "title": "la chaine L'Équipe en direct"
}