Try to remux it to mp4 as advised. If the outcome is not more than 1:37 then, there is no more material, i fear.
Lesson to learn: For every _important_ recording it is _important_ to have a test before. You would have seen then that your machine is quite overloaded with this task, loosing alot of frames on the way during encoding lag...
U-model cpu type of older generation and the graphics isn't really helping, too.