Subtitle Editor cannot handle subtitle files based on cut videos

[Arnei]

The cutting editor works on */source files, aka the original video files prior to cutting and encoding. Similarly, the subtitle editor expects its subtitle files to match the video source file.

However, events may have subtitles that were generated or manually written based on already cut video files, i.e. */prepared. In that case, the subtitles do not match the source video files anymore.

Now, users may want to edit those subtitles with the subtitle editor. Since the subtitle editor expects the subtitles to be based on */source files, there will be a mismatch between subtitle text and video/audio. Meaning any real work on the subtitles is impossible.

The subtitle editor should be extended to also handle subtitle files based on already cut video files. Alternatively, it might be better to somehow auto-detect a mismatch and disallow editing altogether.

[Arnei]

I personally have no good ideas for either. At the very least, we should update our documentation to clearly communicate this issue to our users.