Assuming you already know how to download the videos and just want to convert them so that they can be seen on a TV, you can try either of these:
Free Video Converter, Any Video Converter Freeware: Convert any video to MP4/WMV/MP3 for mobile devices
FREE Video Converter by Freemake: MP4, MKV, MP3, AVI
If using the second one, my own personal choice, be very aware that there is potential spy/bloat/adware bundled with it, and uncheck all boxes when installing, before you proceed. It's a great little program, as long as you don't allow it to install anything else or redirect your home page.