Detecting FPS in subs without opening?

[Kracov]

I use SRT files with AVIs, and I play them with my PS3. What is frustrating to me is that I usually manually check every video to see if subs are out of sync. So I often see spoilers. I was wondering if there were a better way, like to use a program to detect the FPS of subs?

[videobruger]

SRT doesn't use FPS. It's time based.