Adorage effects codec

• Company: proDAD
• FOURCC: pDAD

This is a codec used to store effects for proDAD Adorage video editor.

Each frame actually consists of two images, actual picture and its alpha mask. Usually it is JPEG image with PNG alpha mask but JPEG image with JPEG mask samples are also known and other combinations are theoretically possible.

Frame format:

• 4 bytes -- header size (12 bytes)
• 2 bytes -- image part type (JP for JPEG, PG for PNG)
• 2 bytes -- alpha mask type (in the same format)
• 4 bytes -- unknown, usually zero
• 4 bytes -- image part size
• 4 bytes -- alpha part size
• N bytes -- image picture
• M bytes -- alpha picture