My Sega FILM muxer now successfully roundtrips! I can take an existing Sega FILM file, extract the streams and remux it using my muxer; the game plays it back perfectly.

It’s happy to accept different spec audio, too. For example, I replaced a mono 16000Hz stream with mono 37800Hz, and the original game’s player was fine with it!

The only thing that I currently haven’t gotten working is using FFmpeg’s Cinepak decoder to author new media - but that’s not my muxer’s fault. Think I’m going to submit my muxer now, then look at what I can do to get FFmpeg’s Cinepak encoder to play nice.

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