Convert sfd to cid

What is the difference between .sfd and .cid?

Description: The SFD file format (Sofdec Dreamcast Movie) is a proprietary video file format developed by CRI Middleware specifically for use on the Sega Dreamcast gaming console. This format was used to encode and store video data for playback within Dreamcast games, allowing developers to include high-quality pre-rendered video sequences and cutscenes. The SFD format is optimized for the Dreamcast's hardware capabilities, ensuring smooth playback and efficient storage use on the console's limited media capacity.; This is a format for presenting fonts in PDF files that was initially conceived to store symbols in the Japanese and Chinese languages because it had a 16-bit structure and allowed for more precise adjustment. CID expands the the potential for PostScript by supporting languages that do not have a left-to-right orientation, and by supporting even a vertical mode of orientation.