• Adobe After Effects Expressions

  added specific time to soundkeys expression

  Posted by Dzakwan Kurnia on September 14, 2018 at 4:36 pm

  Hi everyone, can you help me? how to write timing expression if i want to add specific time

  in null object y rotation

  i want to make this active at the time 0:04:20:21 – 0:05:04:13 and 0:06:12:06 – 0:06:38:22

  minAudio = 7;
  maxAudio = 50;
  minStretch = 0;
  maxStretch = 15;
  y1=thisComp.layer(“a3”).effect(“Sound Keys”)(“Output 1”);
  y2=thisComp.layer(“a3”).effect(“Sound Keys 2”)(“Output 1”);
  yr1 = linear (y1, minAudio, maxAudio, minStretch, maxStretch);
  yr2 = linear (y2, minAudio, maxAudio, minStretch, maxStretch);
  [yr1+yr2]

  and add this active at the time 0:05:04:14 – 0:06:12:05
  minAudio = 7;
  maxAudio = 50;
  minStretch = 0;
  maxStretch = 15;
  y1=thisComp.layer(“a3”).effect(“Sound Keys”)(“Output 1”);
  y2=thisComp.layer(“a3”).effect(“Sound Keys 2”)(“Output 1”);
  yr1 = linear (y1, minAudio, maxAudio, minStretch, maxStretch);
  yr2 = linear (y2, minAudio, maxAudio, minStretch, maxStretch);
  [-yr1+yr2]

  please help me sir, and thanks.

  Dzakwan Kurnia replied 7 years, 10 months ago 2 Members · 4 Replies
• 4 Replies

• 

  Dan Ebberts

  September 14, 2018 at 6:12 pm

  I don’t have time to set this up and test it (so it might not be exactly right), but I would set it up this way:

  
tc1 = "0:04:20:21";
tc2 = "0:05:04:13";
tc3 = "0:06:12:06";
tc4 = "0:06:38:22";

  function tc2t(tc){
  sp = tc.split(":");
  return sp[0]*3600 + sp[1]*60 + sp[2] + framesToTime(sp[3]);
  }

  t1 = tc2t(tc1);
  t2 = tc2t(tc2);
  t3 = tc2t(tc3);
  t4 = tc2t(tc4);

  minAudio = 7;
  maxAudio = 50;
  minStretch = 0;
  maxStretch = 15;
  y1=thisComp.layer("a3").effect("Sound Keys")("Output 1");
  y2=thisComp.layer("a3").effect("Sound Keys 2")("Output 1");
  yr1 = linear (y1, minAudio, maxAudio, minStretch, maxStretch);
  yr2 = linear (y2, minAudio, maxAudio, minStretch, maxStretch);

  if (time < t1){
value;
}else if (time < t2){
yr1 + yr2;
}else if (time < t3){
-yr1 + yr2;
}else if (time < t4){
yr1 + yr2;
}else{
value;
}


  Dan
• 

  Dzakwan Kurnia

  September 14, 2018 at 10:46 pm

  im very thanks sir for your help, ill try this, but if have some error, ill try to fix it, because now i know what i need, thank you so much sir Dan.
• 

  Dan Ebberts

  September 14, 2018 at 11:47 pm

  I think i messed up the timecode-to-time function. Try it this way instead:

  
function tc2t(tc){
sp = tc.split(":");
s0 = parseInt(sp[0],10);
s1 = parseInt(sp[1],10);
s2 = parseInt(sp[2],10);
s3 = parseInt(sp[3],10);
return s0*3600 + s1*60 + s2 + framesToTime(s3);
}

• 

  Dzakwan Kurnia

  September 15, 2018 at 9:31 am

  yeah i got it now :’D enjoy your day sir, and my biggest thanks for you sir.

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