[Matroska-devel] Re: DRAFT: new elements for compression/encryption
steve.lhomme at free.fr
Fri Oct 17 10:00:27 CEST 2003
>>* KaxContentEncodingScope: Tell whether the frame contents, the track's
>>private data or both have been modified in this way.
>>0 - only the frame contents
>>1 - only the track's private data
>>2 - both
>>Default value is 0.
> I like that, its clever. I can imagine that people would just start using one
> all of the time, but this saves us the trouble of deciding which that would be.
How about the "only certain frames" ? That would also encryption of only
some parts of a movie or 1 frame every 3, so that the user still need to
get a way do decrypt it and still be somehow playable. It would also
save some encryption time on some systems.
I propose a bitfield for these values :
bit 0 : track's private data
bit 1 : frames marked as such (we need to use something in the frame,
probably a bit in the frame header)
bit 2 : all frames
I was thinking about adding a Bitfield EBML type someday. Maybe we could
do it now.
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