Only open AVI files with at least one supported video track type.
(This is the real fix for DV-Type1-AVIs, since the FCC of iads, that
is used there, wasn't detected. But the code will happily open AVI-files
with only audio tracks... So the real fix is: only try to open things, that
contains something we know how to handle :) )
Updated scons to work with the ffmpeg binaries in
lib/windows/gcc again. Also fixed a bug reported by
Debolaz on irc. Blender's internal avi reading (which can
only read simple formats like motion jpeg) was telling the
video code it could read all avis, without checking their
codec.
To fix this, I copied AVI_open_movie(), and modified it to
to replace AVI_is_avi(). Now it properly checks the codec,
and validates the header.
http://bugzilla.mplayerhq.hu/show_bug.cgi?id=642
Help provided by Reimar Doeffing.
It removes two special cases which were creating empty huffman tables.
So videos would play all black in players that were working correctly
and looking at the tables if they exist.
I also deleted commented out malloc statements that seem to be working
just fine(they were replaced with MEM_mallocN statements).
If people need them they can just look at cvs to see how they were done before.
I also removed an empty else statement.
(This fix does not fix the black bar in the sequencer with blender made avi's but
I hope to have a fix for that later today)
Kent
some avi's have 0 sized chunks that we were not handling properly.
(Need to basically rewind the avi to previous frame in this case)
http://www.cs.umn.edu/~mein/blender/avi/examp.avi has 25 frames,
4,7 and 9 are "dropped frames"
blender use to crash on these now it displays the frame before it assuming
there is one.
Kent
