Searching for ways to adjust the timing in IDX/SUB subtitles, I see mention of using "Subtitle Cutter", which supposedly comes with VobSub and which supposedly has an easy option to adjust the framerate of all the subs.
All I see are "submux.exe" and "subresync.exe". I can't say that I ever recall seeing any such program in VobSub.
Where do I find this "Subtitle Cutter" tool?
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You could use Subtitle Edit slightly different.
Use File -> Import -> Vobsub (idx/sub)
Right-click on a subtitle line and export as Blu-ray-sup.
[Attachment 61263 - Click to enlarge]
Change the FPS and export it.
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Import the Blu-ray sup file; right click a line and select Export to idx/sub.
Subtitle Creator which has an option to load IDX/SUB and change the framerate, but there's another small snag;
The subs have multiple sub streams and I was hoping to preserve them all. So far all the solutions I've found will only operate on one of the streams. Not just one stream at a time, but they only seem to allow saving/exporting them with a single stream. If there's a way to load them, fix the timing on all the different streams and then save them all back to IDX/SUB, I haven't found it yet.
There's also the issue that I have quite a few that need to be done, so some kind of batch mode would be highly preferable.
I even considered writing a script that would read in the IDX file and adjust the times, but I have no idea how to calculate the new times. I'm sure there's a formula for it (after all, these other programs do it), but I have no idea what it is.
Are there any command line utilities that can adjust the timing of IDX/SUB files?
Are there are other command line tools that can do this?
OK, I'm officially dumb.
I was looking at the archive I have for VobSub because I didn't think I'd ever installed it on this system. Turns out that I had and Suntitle Cutter is right there in the VobSub menu.
It will do all the streams at once, which is great. It can't be done from the command line though (no command line options to change the framerate), but at least it does what I want.