This format (the DHDM) appears to be high resolution morphs. It is strange not to use the Dsf format. Does anyone know how they are created or how they are encrypted? They can be compressed with gzip or zlib.dll, but little profit.
On linux, using file dink, I get "data". There is apparently no compressor, however, they all start the same: "ÐÐÐÐ" in text or "D0 D0 D0 D0" in hexa.
The fact is that these files are 20/80 mb!
Any clue or hint will be well received ...