I am facing this issue consistently with external srt subtitles since a few months now. The audio/video streams are correctly cut and merged but subtitles always have this issue. This happens to random fragments in almost every mp4 file I split.
- For example, let's say there are two fragments A and B.
- The last subtitle entry of A ends sometime before the end of the audio/video streams, lets say 5 seconds before.
- When B gets merged, its subtitles start immediately after the last line of subtitle of A.
- The 5 seconds of no subtitles is skipped completely.
To resolve this, I have to use another program to resync the subtitles. I had thought that you would have fixed it with the new version but alas, I was hoping too much. v7 doesn't even select the external subtitles for splitting by default anymore as well...