Load a somewhat large file (e.g. 1:30h) with somewhat large audio chunks
(>0.2second) and watch how gst_avi_demux_massage_index() takes more than
two-and-a-half-minute to complete.

The problem is in de chunk cutting (line 1393-1454), which will cut each single
chunk in pieces, move all subsequent chunks further down and then fill in the
new subchunks. This obviously needs to be done using lists instead of an array.