Hardsubbing into a .mp4
 

Hi I'm new here. I want to hardsub some shows into .mp4 format. I've been using MKVExtract/MeGUI and Yamb.

This works well for me but today I stumbled across a problem when trying to convert an (old) show that contains ordered chapters. In my case, the ending song and subtitles aren't being placed into the .mp4 video.

All my other shows that had ordered chapters has worked fine for me. I'm guessing I have this problem because the show is old (~2008-9); and ordered chapters is a new thing?

How can I get by this, any advice?