Roland V-1HD 4 x HDMI Input Switcher

Roland's V-1HD Switcher is a portable solution for HD video production that accommodates up to four HD inputs. The inputs each have a frame buffer/TBC.  Built into the switcher is a 12-channel audio mixer, which can de-embed and embed audio signals from HDMI.
 
The integrated T-fader allows you to manually control the speed of transitions, or you can use the take button for your selected transition. The unit features a program and multi-view preview output as well as an analog audio input and output.