Even Raydon hasn’t managed to create a media streamer on the hdr. You can stream from but not to a Foxsat-hdr. 
Most laptops have vga or hdmi outputs. If you have such a PC why not connect it directly to the TV assuming the TV has VGA and/or hdmi inputs ?
If the youtube video you want is available for download then another Raydon creation AV2HDR may be able to create the support files required to playback on the hdr using the downloaded file.
Some media streamers like the WD HDTVlive will stream Youtube directly to a TV.