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Hi; I recently was testing to see if our long standing rules for exporting BVH really create valid animation files. However i found some oddities where the various "believes" on the web did not match with my finds. So i have collected a new rule set for BVH animations that seems to apply nowadays as far as i can tell. However i am not sure if this is totally correct or just works sometimes by chance. The new rules are here: Rule 1: First frame of an animation defines the startlocation of the animation Rule 2: First frame of an animation is not played (unless the animation has only one frame) Rule 3: One-frame animations work (despite of rule 2) Rule 4: A bone is only animated if animation values differ at least on 2 frames Some more details are here: https://blog.machinimatrix.org/2018/06/20/rules-for-exporting-bvh-animations/ Can someone acknowledge or dismiss this ruleset? For Avastar users: the most recent daily build avastar-2.4-24 contains the new rule set so you could actually check if it works for your purposes. thanks, cheers, Gaia