Extract subtitles from my own subtitled film

[SergioA]

Hi,
I have a question about extracting subtitles (.srt) from one of my own subtitled films. I'm pretty sure the subtitles are Open Captions and not Closed Captions. I don't have the project file left since it was a couple of years ago. Is it possible to do this in any way?

Information about the video file: MP4 / 1920x810 / 25 fps.

I have tried the following tools but they don't seem to recognize the subtitle track: MediaInfo, Subrip, Mp4box.

Appreciate any type of advice for this issue.

Thanks in advance,
Sergio

[davexnet]

What does mediainfo (in text view) say about the subs ?

[SergioA]

[Attachment 47891 - Click to enlarge]

I think I have attached the file with this post. Media-info doesn't seem to recognize the subtitle track. Only video and audio.

[manono]

Are you sure these subs aren't "burned" or "hardcoded" into the video?

[hairswigs]

This may be ok

[jan5678]

If the subs are in text form (srt) you could load the mp4 in mkvtoolnix, save it as mkv and use mkvextract gui or other extractor to extract the sub

[jagabo]

If MediaInfo doesn't report the subs they are burned into the video, closed captions.