https://wiki.multimedia.cx/index.php?action=history&feed=atom&title=TMM-FracTMM-Frac - Revision history2026-08-19T07:48:31ZRevision history for this page on the wikiMediaWiki 1.39.5https://wiki.multimedia.cx/index.php?title=TMM-Frac&diff=16091&oldid=prevKostya: fill information2025-11-10T14:08:18Z<p>fill information</p>
<p><b>New page</b></p><div>* Company: Total Multimedia<br />
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This is a format that employs licensed [[Iterated Systems Fractal Codec]] and was used for some interactive video discs in DOS era.<br />
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Multimedia data is stored in blocks of 0xF800 bytes long that comprise several frames with audio and video data.<br />
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Block header format:<br />
32 bits -- 0x007C0EBF<br />
16 bits -- 0x007C (normal block) or 0x0000 (last block)<br />
16 bits -- number of frames in block<br />
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Frames start with a header:<br />
16 bits -- video frame flags (or some unused value for audio)<br />
16 bits -- frame type (0x000C - video, 0x0700 - audio)<br />
16 bits -- audio frame size (or some unused value for video)<br />
16 bits -- video frame size<br />
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Audio is stored as 8-bit 22kHz mono PCM, for video the part starting with motion offsets count is transmitted.<br />
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First block starts with a header, at offset <code>0x24</code> there's an absolute offset to the palette data and frame data usually starts at offset <code>0xb3</code>.<br />
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[[Category:Game Formats]]</div>Kostya