[0]atrim=end=124.45:start=60[s0]
[s0]aformat=sample_fmts=fltp[s1]
[s1]amix=normalize=False:weights=1[s2]
[s2]afade=duration=1.0:type=in[s3]
[1]atrim=end=186.0:start=123.45[s4]
[s4]aformat=sample_fmts=fltp[s5]
[2]atrim=end=186.0:start=123.45[s6]
[s6]aformat=sample_fmts=fltp[s7]
[3]atrim=end=186.0:start=123.45[s8]
[s8]aformat=sample_fmts=fltp[s9]
[s5][s7][s9]amix=normalize=False:weights=0.7 0.8 0.7[s10]
[s3][s10]acrossfade=curve1=tri:curve2=tri:duration=1.0[s11]
[1]atrim=end=1258.02:start=185.0[s12]
[s12]aformat=sample_fmts=fltp[s13]
[s13]amix=normalize=False:weights=1[s14]
[s14]afade=duration=1.0:type=out[s15]
[s11][s15]acrossfade=curve1=tri:curve2=tri:duration=1.0[s16]
