[Matroska-devel] Element order in EBML/libebml
steve.lhomme at free.fr
Fri Oct 17 17:20:06 CEST 2003
...lots of things. And I won't comment everything.
But EBML, in general, does induce an order for elements. You could swap
some and the meaning of the file has to be the same.
The only problem is when Chesksum is used. Once it's set, you can't
change the order, unless you compute the checksum again. So that's still
For the rest, there is no case where the order of elements matters. Even
for blocks not in coding+display order. I think DirectShow is capable of
being feed with timecodes in no particular order (as long as it's not in
the past of what has been rendered)... But that's a problem for hardware
players that can't reorder frames easily (BTW, it has always been said
that a Cluster should be held full in memory)...
For elements that DO need an order, it has to be written somwehere. So
far, for Blocks and now for Encoding, it is an EBML element. (timecode,
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