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• 02:00, 26 November 2025 Martini talk contribs created page MMIOM CODEC OPEN (Created page with "{{DISPLAYTITLE:MMIOM_CODEC_OPEN}} This message requests a CODEC procedure instance be opened. On completion, it returns a CODEC handle in ''phCODEC''. ==Syntax== <PRE> param1 PHCODEC phCODEC; Pointer to CODEC handle.: param2 USHORT usMsg; Set to MMIOM_CODEC_OPEN.: param3 LONG lParam1; Pointer to an CODECOPEN structure.: param4 LONG lParam2; This parameter is not used.: </PRE> ==Parameters== ;''phCODEC'' (PHCODEC) - input :Pointer to CODEC han...")