thanks for the links, i try them later because i figured out what was wrong Smile
it's necessary to disable hardware acceleration in windows, after that normal recording is possible (maybe not so smooth but quite enought for me)
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i'm using two different computers and exactly the same mame version (0.64) and after recording an input (*.inp) on computer #1 and trying to watch my record on computer #2, playback is corrupted (wrong movement etc)
how to fix that?