Filip Roséen authored May 26, 2016 and Thomas Guillem committed May 26, 2016

Some files do not have their first cluster at PTS=0, meaning that we
might spend an eternity looking for such PTS (even though it is not at
all present in the file) when starting playback (seeking to 0).

This patch fixes the issue by always assigning a seekpoint for PTS=0 pointing
at the first cluster position. Instead of using the cluster-timecode, a
hardcoded value of 0 is used (so that every file will have a seekpoint at that
location).

Signed-off-by: Thomas Guillem <thomas@gllm.fr>