Note that the upload of IDX subtitles is currently not allowed, but this information might still be useful.

 Have you ever wanted to change the timing of a IDX SUB subtitle without converting it to .srt or other text subtitl formats? Here is one way to do it.

You need the vobsub package which includes the program subresync.

Start it from the start menu.

Open a IDX SUB subtitle. (Make sure it is not in a rar archive any more)

 Open the .idx or .sub, it doesn't matter which one.

Now open the available subtitle tracks.

Choose the track / language you want.

Now we are ready to change the timing.

In our example, the subtitle is 15 seconds too late through the whole film == constant delay. 

Right-click (means klick with right mouse button) on the circle until you get the red arrow pointing down.

Found it!

We need to add 15 seconds, that makes it 00:00:23.975.

See?

 The Preview shows the changed timing. Notice that the left column does still show the old timing.

Save your subtitle under a new name.

To check if it all worked you need to open the new subtitle.

There it is.

So we changed the timing. Now that was the easy part. What if you have a film where the subtitle is completely wrong? All you need is the time of the first and the last subtitle line. Use your media player to find out the right timings and write them down.

 This time we right-click until the green dot appears.

We change the start time...

 Now we need to go to the last line and get the green dot there as well:

There it is. Now the time for the last line...

Done!

Save the subtitle and you're finished.

You can do even more complicated operations. You can change the timings for specific parts of the subtitle, you can do time stretches of passages or the whole film....you can even do multiple things at the same time....

What you can't do is splitting the subtitle (or at least I don't know how)