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Message: <blockquote data-quote="tourettes" data-source="post: 324727" data-attributes="member: 10858">Generally audio shouldn't drift even when playing at "wrong" fps rate. This is because audio is always used as the source clock in directshow applications and the video renderer will adapt to that by dropping frames or displaying some frames twice (of cource in ideal case the video renderer doest drop a single frame during a movie).Somesystems might have audio & video clock that drifts a little bit and this is where Reclock could be useful (in addition to different features that it has, like the PAL speed up if you dont have native 24fps display). Reclock will resample the audio so that video render wont have to drop or display dual frames as its less audioble to the user when the audio is slighly distorted (speed changed, pitch remaining the same) than stuttering video.</blockquote>