service firebase.storage {
  match /media/{mediaId}/video.mp4 {
      allow write: if resource == null && request.auth != null && request.auth.id == mediaId;
    }
  }
}

service firebase.storage {
  match /media/{mediaId}/video.mp4 {
      allow write: if (resource == null && request.auth != null && request.auth.id == mediaId)
                      || (request.auth.token.mediaId == mediaId);
    }
  }
}