Converting the recorded snipped (just one or two minutes) of the replay of a game (so not recorded during the actual game, but recoring from a hwp replay file) into video stops at around 90%.

Happens every time, also with different recordings of the same replay.
System is OS 10.6.8, current Hedgewars version. Mode was Winter, 1 player vs. 4 Computers, 4-5 hogs each.

Any idea?