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Valve Flex Animation (VFA) is a file format used by 
HLFaceposer to store flex animations, and later import them in a scene file's flex animation event.
Format
VFA files use the same format as VCD files, with the exception that they only store the flexanimations data. VFA files are always saved in the 
flexanimations folder by Faceposer.
Note:VFA files always start with two spaces.
Confirm:Does it matter ? Can they still be parsed whitout those 2 spaces or is it a Faceposer bug ?
Full example :
Expand
flexanimations samples_use_time defaultcurvetype=curve_catmullrom_normalize_x_to_curve_catmullrom_normalize_x
{
"lid_tightener" combo
{
0.4000 0.6100 "curve_easein_to_curve_easeout"
2.4000 0.1200 "curve_linear_interp_to_curve_linear_interp"
4.4000 0.5900 "curve_easein_to_curve_easeout"
}
{
1.0000 0.7700 "curve_bspline_to_curve_bspline"
1.8000 0.2700 "curve_bspline_to_curve_bspline"
3.0000 0.7500 "curve_bspline_to_curve_bspline"
4.0000 0.2900 "curve_bspline_to_curve_bspline"
}
"smile" leftedge curve_default_to_curve_hold 0.500 rightedge curve_kochanek_late_to_curve_default 0.250
{
0.8000 0.7100
1.6000 0.2700 "curve_easein_to_curve_easeout"
2.2000 0.6000 "curve_easein_to_curve_easein"
3.0000 0.2600 "curve_easeout_to_curve_easeout"
3.6000 0.5900 "curve_linear_interp_to_curve_linear_interp"
}
}
}
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