Does anyone here has knowledge to this. Im new. .
I've downloaded the fullmetal alchemist series and found out that the op/ed are seperated from the episode. Is there a way to merge the op/ed back to the episode?

This post has been edited by Brandonchoo123: Aug 21 2014, 06:06 PM

つ mkvtoolnix

Add the OP first, then append the content, then append ED.

What if the opening starts after the prologue? And if i add the op, will it mess with the softsubs timing?

Means you need to split the content first, then do the merging.
It involves more step, but you can do the split with mkvtoolnix too.

Softsubs, from what I tested here, it works fine (for both split and merge).

EDIT: There are some video editing tools that should allow you perform similar task too, but most of them are paid software. mkvtoolnix is my choice because it is open source and free.

This post has been edited by bergstein: Aug 21 2014, 11:19 PM

Will splitting affect the video quality?

mkvtoolnix, merely split and merge won't affect the video quality.