Depending on the age and connectivity of your television there are a couple of options available for playing our programs on your TV. They should not impact the size of the video.
1) Get a device that plugs into the TV and that your computer, phone, or tablet will stream to easily (examples: Google Chromecast, Apple TV). Then stream the video from the Internet through the device and directly onto your television.
2) Get an HDMI adapter for your tablet/phone/computer (most laptops have an HDMI port now). Also, get an HDMI cable. Simply plug your tablet/phone/computer into the device and plug your television into the device. Then you can stream the video directly from the Internet, through your computer, to the television.