Originally Posted by signals

The framerate is how many times in one second the screen is redrawn (frames per second or fps). The proper setting depends on how you plan to watch the movie (some mobile devices do not support normal framerates of 25-30 fps). For NTSC Region 1 DVDs you can set it to "Same as source" if you are watching on a TV or PC (29.97 fps normally). For PAL TVs in Europe and elsewhere the frame rate should be 25 fps, but the "Same as source" setting should produce the correct framerate with a PAL DVD. Choose the largest available screen size that matches the aspect ratio you need and adjust the video bitrate slider until you get a reading of at least 0.2 in the "bits/pixel" column. The file size may be slightly larger than 1.5 GB for some movies.