Easiest would be for you to buy a HDMI cable (costs around $30) for your iPhone and plug it in directly into your TV. I'm assuming there is a HDMI port on it since it's 50'' and probably a newer model.
Second thing you can do is connect your iPhone to your PC with the charging cable, access the phone through Windows Explorer (or any other browser) and just copy the files to your hard drive, burn them to a DVD and play.
3rd thing you can is transfer the files with a app called "WiFi photo transfer", just download the app (it's Free) and open it while your connected to your WiFi network. Then open your internet browser and just type the IP address of your iPhone (which is shown when you open the app) into the address bar and you have access to your media library, from there on it's easy to copy anything you want to your PC. After that you can just burn them to a DVD and watch.
Here's a link to the Wifi Photo Transfer app:
http://itunes.apple.com/us/app/wifi-photo-transfer/id380326191?mt=8