I'm exploring the idea though and doing some research on how this can be done. So it could be a feature for the future. :-)
* Extract a few sentences from the middle of the subtitle file.
* Extract the audio for those sentences from the video file
* Run speech-to-text and verify that at least a few of the words were the same.
It kind of worked on some shows, but not reliably..
I'm exploring the idea though and doing some research on how this can be done. So it could be a feature for the future. :-)