I split several files into 15 minute segments, this worked perfectly and each segment was dead on 15 minutes.
I just tried another file splitting into 15 minute segments
The first file is 24:24 and seems to repeat it's self after 15 minutes, the next is 15:15, then 14:25, then 16:17 etc. etc.
I deleted them all and tried again same result.
The original file is 7:56:25, the split files total up to 8:09:06.
What's going on?
Cheers,
Chris