How to do this (easy?) effect in Aegisub?

[Malls Baloney]

I want to do an effect in Aegisub where half a line appears as the person says it and the other half appears when the person says that part.

For example, if the entire line is say "What is going on", first "What is" appears on the screen, then when he says "going on", the full line "What is going on" appears on the screen. But I don't want two separate lines because the "What is" in the first line will be at a different position than the "What is" in the second line.

How do you do it? Does the karaoke effect allow you to hide a part of the line completely?

[abolibibelot]

I have no experience with creating such (relatively) advanced subtitle effects, but here is the ASS code for the title of a (magnificent) movie that was discussed here (which I only re-translated, amazed by the masterful crafting of the original english subtitles), showcasing an effect similar to what you describe.

Dialogue: 1,0:06:53.16,0:06:59.73,Sign,,0,0,0,,{\fad(600,0)\pos(960,830)\fs150\fnA-OTF Ryumin Pr5 B-KL\3c&HA40000&\bord6\blur1\4c&H3E0D00&\shad4\4a&H80&\clip(536,710,546,840)\t(30,1000,\clip(536,710,1389,840))}The Angelus Bell

I had to replace the font by a more conventional one as accentuated characters were mismatched.

Dialogue: 1,0:06:53.16,0:06:59.73,Sign,,0,0,0,,{\fad(600,0)\pos(960,830)\fs130\fnTimes New Roman\3c&HA40000&\bord6\blur1\4c&H3E0D00&\shad4\4a&H80&\clip(426,710,546,840)\t(30,1000,\clip(426,710,1589,840))}La cloche de l’angélus

Since noone chimed in, it may at least give you some insight if you haven't already found a solution.

[Skiller]

It works by simply hiding the words that are not spoken yet using the {\alpha&HFF} tag and splitting/duplicating a subtitle into as much lines in Aegisub as there are words to reveal.


For example.

"What is going on?"

First line in Aegisub:

What is {\alpha&HFF}going on?

The trick is, this line only lasts just to the point where we want the words "going on" to reveal. Then, the second line of this subtitle must start seamlessly (same start time as the end time of the last subtitle) but this time without the hiding tag:

What is going on?