Try this: percentSize = 75; txt = effect("Slider Control")("Slider").value.toFixed() + "%"; style.setFontSize(percentSize,txt.length-1,1).setText(txt); ... View more

1) Time reverse seems to work for me (on my expression). It might be off by 1 frame, but I'm not sure about that. 2) That's a lot more complicated. I guess you would have to have a text layer with the expression inside the pre-comp. ... View more

I think if you add the hasAudio test to what I posted before, it will ignore shapes, solids, text, nulls, etc: txt = ""; for (i = index+1; i <= thisComp.numLayers; i++){ L = thisComp.layer(i); try{ src=L.source; }catch(e){ continue; // skip this layer if no source } if (L.hasVideo && L.active && L.hasAudio){ t0 = L.sourceTime(L.startTime); f = Math.round((L.sourceTime(time) - t0)/src.frameDuration); txt += (txt != "" ? " ; " : "") + "Frame: " + f + " (" + src.name + ")"; } } txt ... View more

This might be a little better: txt = ""; for (i = index+1; i <= thisComp.numLayers; i++){ L = thisComp.layer(i); try{ src=L.source; }catch(e){ continue; // skip this layer if no source } if (L.hasVideo && L.active){ t0 = L.sourceTime(L.startTime); f = Math.round((L.sourceTime(time) - t0)/src.frameDuration); txt += (txt != "" ? " ; " : "") + "Frame: " + f + " (" + src.name + ")"; } } txt ... View more

I think it would be something like this: txt = ""; for (i = index+1; i <= thisComp.numLayers; i++){ L = thisComp.layer(i); try{ src=L.source; }catch(e){ continue; // skip this layer if no source } if (L.hasVideo && L.active){ f = Math.round(L.sourceTime(time)/src.frameDuration); txt += (txt != "" ? " ; " : "") + "Frame: " + f + " (" + src.name + ")"; } } txt ... View more

I think your expression could probably be simplified greatly, but I'm not clear on what it's supposed to do. What exactly is the text layer supposed to display? You mention "the video name and frame number of that video", but which video? ... View more

Manipulating the frequency is surprisingly tricky, but possible. This might be helpful: https://www.motionscript.com/articles/speed-control.html#wiggle ... View more

Once you have two wiggles isolated, you can combine them in interesting ways. For example, you could multiply the two wiggles together, like this, to get a completely different feel: w1 = wiggle(12,7) - value; w2 = wiggle(.5,25) - value; value + [w1[0]*w2[0],w1[1]*w2[1]]   ... View more

Both w1 and w2 are based on the pre-expression value, but they're added together so the result is cumulative. Not sure if that answers your question though. wiggle() is somewhat unique in that its result includes the pre-expression value, so to get just the wiggle part, you have to subtract value from the result. This technique should work for any property, if that's what you're asking. ... View more

You can stack multiple wiggles, like this (in this example w1 is a fast jittery wiggle, where w2 is slower, providing drift): w1 = wiggle(12,7) - value; w2 = wiggle(.5,25) - value; value + w1 + w2 ... View more

You'll find info on velocity, speed and radiansToDegrees() in the Expression Language Reference of AE's Help, and Math.atan2() in any JavaScript reference. ... View more

The key is that the Position's velocity attribute has the movement's direction information (you just need to use a little trig to convert it to degrees) and the Position's speed attribute has the movement's magnitude info. ... View more

The first expression (v = ...) goes in the Directional Blur's Direction parameter and the second one goes in the Directional Blur's Blur Length parameter. No pick whipping necessary (assumes you already have a wiggle expression on the Position property). ... View more

Underlining text using sourceRectAtTime() can get tripped up when the text has descenders. There are a couple of ways to deal with this, such as assuming the "x height" is half the font size, or, you can add an expression like this to the source text for your text layer:   time < 0 ? "x" : value   which sets the text to a single "x" character at times less than 0. You can then calcualte the line's position based on the height of the "x" but the width of the text. This modified position expression assumes the anchor point is in the center:   ref = thisComp.layer(index - 1); pad = 10; rW = ref.sourceRectAtTime(time,false); rH = ref.sourceRectAtTime(-1,false); ref.toComp([rW.left + rW.width/2, rH.top + rH.height]) + [0,pad]         ... View more

The only thing I can see that doesn't seem to work as expected, is this line: if (layer == thisLayer) continue; which should probably be: if (layer.index == thisLayer.index) continue; Are you getting an error message, or what exactly is the issue? ... View more

That's very puzzling. Can you post a larger screen shot that shows the timeline (with the expression exposed), the comp window, and the project panel? ... View more

You didn't mention how you're doing it now, but if you're using a loop with setValueAtTime(), you should try setValuesAtTimes() with arrays of times and values. ... View more

I think you just need a slight change: txt = thisComp.layer("Rate").text.sourceText.value; text.sourceText.style .setKerning(thisComp.layer("CONTROL").effect("1st Kerning multiplier")("Slider"), 1) .setKerning(thisComp.layer("CONTROL").effect("2nd Kerning multiplier")("Slider"), 2) .setKerning(thisComp.layer("CONTROL").effect("3rd Kerning multiplier")("Slider"), 3) .setText(txt) ... View more

The problem, of course, is that a comp can be nested inside any number of other comps. So what would be the expected result for "parentComp" when that could be anywhere from zero to "n" other comps? ... View more

You can leave them in the project bin, but puting them in the timeline gives you access to the number of rows. Without that, you need to craft your expression so that it doesn't run off the end of the data and cause an error. That wouldn't be an issue if the last frame number is always beyond the end of your comp. Otherwise you might have to do a try/catch to catch the error locally (or use some capability I'm not aware of--which is certainly possible). ... View more

This probably won't exactly fit your situation, but based on the info provided it should be helpful for you to try it. First, I think you'll need to truncate your CSV file so that it only has the first set of data (Frame, Luminance and Cut). Import that file into AE (I've assumed the file name is "Glow.csv"). Drag the file into your comp timeline, so the expression will able to retrieve the number of rows. Then apply this expression wherever you need to retrieve the current, interpolated luminance value: numRows = thisComp.layer("glow.csv")("Data")("Number of Rows"); curFrameVal = timeToFrames(time); prevFrameVal = nextFrameVal = 0; for (i = 0; i < numRows; i++){ prevFrameVal = nextFrameVal; nextFrameVal = footage("glow.csv").dataValue([0,i]) if (curFrameVal <= nextFrameVal) break; } if (i >= numRows){ footage("glow.csv").dataValue([1,numRows-1]); }else{ nextLumVal = footage("glow.csv").dataValue([1,i]); prevLumVal = i == 0 ? nextLumVal : footage("glow.csv").dataValue([1,i-1]); linear(curFrameVal,prevFrameVal,nextFrameVal,prevLumVal,nextLumVal); }   ... View more

What does your CSV file look like? ... View more

It would probably help if you shared the expression you're using. ... View more

Did you try my ping pong suggestion? ... View more