I’m having a similar issue all of a sudden with files from this camera. Have been using hm100u and hm150u faithfully for years shooting the same spec:
.mov, 1280 x 720, mpeg-2 video, linear PCM, timecode
yesterday tried to open files (that played fine days earlier) in FCP 7 and mpeg streamclip. both will play audio, but no video…
tried manually installing mpeg2 component in QT library, but still won’t work.
The files play fine in quicktime 10.