While many TVs these days display Hi-Def, not everyone has the capability to play Hi-Def videos. Specifically, this requires a Blu-Ray player that can play Hi-Def DVDs. According to a recent study, only 15% of households currently own a Blu-Ray player, which means the overwhelming majority do not. DVDs on the other hand are universally playable, in DVD players, in Blu-Ray players and in computers. Additionally, most Blu-Ray players and many DVD players have an upscale ability to convert your videos on the fly to a 1080 format. While this is not perfect, it typically does a good job of simulating Hi-Def.
One must also remember that often times newer technology is limited by old technology. 8mm film has a frame size of just 3.3x4.5mm and the current average TV size is currently 46" diagonal. That is a 173 times larger. By capturing your film frame-by-frame, we are able to capture the highest quality conversion but the larger the TV the final product is viewed on, the more the grain of the original film will be visible.