Just use the latest ACR (7.1 RC) or the latest Lightroom (4.1 RC 2).
(For those who are interested: the technical tidbit that is different with stills shot in Live View video mode is that the aspect ratio of the recorded raw file is 16:9, not 3:2. So the actual # of recorded pixels is different, which ACR/LR did not support in earlier versions. Now fixed in the latest versions.)