Movement
\move(<x1>,<y1>,<x2>,<y2>)
\move(<x1>,<y1>,<x2>,<y2>,<t1>,<t2>)
The \move tag works similar to \pos in that it positions the subtitle line, the difference is that \move makes the subtitle move.
The two versions of \move differ in that one makes the movement occur over the entire duration of the subtitle, while on the other you specify the time over which the movement occurs.
The coordinates x1, y1, x2 and y2 are given in the script resolution coordinate system, like \pos. The subtitle starts out at point (x1,y1) and moves with constant speed so it ends up at (x2,y2). Alignment influences movement coordinates the same way as it influences \pos coordinates.
In VSFilter 2.39 and later, you can use non-integer numbers for the X and Y coordinates. Note that this might not be safe for softsubbing.
In the second version, the times t1 and t2 are given in milliseconds, ie. one thousandth of a second, and are relative to the start time of the subtitle. For example, a t1 value of 1500 means that the movement begins 1.5 seconds (one and a half second) after the line has appeared on screen. When you specify times for the movement, the position of the subtitle is as follows:
Before t1, the subtitle is stationary at point (x1,y1).
Between t1 and t2, the subtitle moves with constant speed from (x1,y1) to (x2,y2).
After t2 the subtitle is stationary at point (x2,y2).
Note that it is legal to have t1 and t2 specify times greater than the duration of the line, but it might not be very useful to do so. Specifying both t1 and t2 as 0 (zero) is the same as using the first version of \move, ie. the movement will occur from the start time of the line to the end time of the line.
There are some things \move can not do:
Non-constant-speed movement is not possible. The movement can not, for example, start out slow and end fast.
There can only be one positioning or movement tag in a line. Putting both a \pos and a \move tag in a line will not work. It will also not work to put two or more \move tags in a single line.
If you need to do do any of those two you will need to split the movement into segments that are done on separate subtitle lines. (How to do this is outside the scope of this page.)
Example
\move(100,150,300,350)
When the line appears on screen, the subtitle is at (100,150). While the subtitle is displayed, it moves at constant speed such that it will arrive at point (300,350) at the same time it disappears.
Example
\move(100,150,300,350,500,1500)
The line appears at (100,150). After the line has been displayed for half a second (500 milliseconds) it begins moving towards (300,350) such that it will arrive at the point a second and a half (1500 milliseconds) after the line first appeared on screen.
Todo lo que se necesita saber sobre subtítulos SSA/ASS:
http://www.animesubs.org/Foro/viewtopic.php?f=12&t=608
http://www.animesubs.org/Foro/viewtopic.php?f=12&t=2096
Son un must(de obligatoria lectura) si se quiere aprender a hacer algo mas que solo ajustar tiempos en Aegisub y similares.