Audio And Video Improvements Come With Hi Def By: Jason A Thomas | - Our original big box televisions were very sufficient for most duties, connected with cable input, VCR and DVD players. Newer HDTV's have incredible increases in the audio and video projections, it's a whole new world. They also have more capability of upgrading to connecting to many other media sources. The original televisions only had so much capability to convey the picture and sound.