Footage from the canon Legria

I am having problems with some clips from my new Canon video camera (Legria HF G70). Those are MVI files. When I import a clip in Premiere it only shows the first 20 frames of the clip instead of the full length. This happens not at all of the clips. Sometimes a clip has this bug and the other time it suddenly disappaers..I took the issue to Canon and they concluded as follows:

'MVI files (MVI is the wrapper or extension but with the MJPEG codec) are known to have problems playing those files in some media players, and up to an extension, some video editing software.
Therefore, we would like to ask you to contact Adobe support for this.'

I hope Adobe can solve the problem. Thanks!