At a recent event I took video using my Sony camera and loaded my MTS files into Pro 13 and edited and created without a problem. A friend at the same event took video using his Psonic camera and passed his files , which are M2TS, on to me on an SD card. When I load them into Pro 13 they play ok and I can edit them. When I amalgamate the MTS and M2TS files into the same project the M2TS files jam when I try to edit them, just a blue circle going round and round and then "not responding" appears.
Any ideas how I can get round this please?