To: rghockey@bigpond.com
It is hard to say how many minutes exactly. It basically depends on the bitrate the video is recorded with (the higher bitrate the larger file size and vice versa).
Note, if you would like to burn the DVD to play it in a DVD player, you will need to convert your HD videos either to DVD which will reduce the quality (DVD format does not support HD resolution) or to AVI HD DivX compatible profile (in case your player supports DivX playback). Both can be done using AVS Video Converter. By manipulating the output bitrate you can reduce the output file size to fit the movie onto a standard DVD.
Regards