If you are looking for an easy way to transform your 720p videos into full HD 1080p or convert HD video into a 4K ultra HD video on the go. The new Seiki U-Vision HDMI Cable which is now available to purchase for $50 might be worth more investigation.
The Seiki U-Vision HDMI Cable was first unveiled during this years CES 2014 Consumer Electronics Show in Las Vegas during January, and provides a convenient way to view your older HD content on Ultra HD TVs.
Allowing you to convert feeds from your set top box, blu-ray player or gaming console to eye-popping 4K resolution video. The Seiki U-Vision HDMI Cable will be available in two versions either as a standalone HDMI cable and an HDMI up-conversion adapter.
The Seiki U-Vision uses Marseille Networks VTV-1222 chip for video processing to output Technicolor certified native 4K video and more information is available from the Seiki website. If you enjoy building Raspberry Pi projects this awesome Raspberry Pi HDMI input add-on might be worth more investigation.