Compressed Movie Resources

Compressed movies are stored in a compressed movie resource atom container as follows:

This is the same as for uncompressed movie resources.

Within the MovieResourceAtomType atom is an atom whose ID is CompressedMovieAID .

The CompressedMovieAID atom contains two atoms:

The atom whose ID is DataCompressionAtomAID contains a four-byte code that specifies the decompressor component that must be used to decompress the compressed movie resource.
In the atom whose ID is CompressedMovieDataAID , the first four bytes of the specify the length of the movie resource data when it is decompressed, in bytes. The remaining bytes are the compressed movie resource.