Can Shotcut directly import subtitles from an MP4 “subtl” track? I can always use ffmpeg to export that track to an SRT or VTT file and then import that file into Shotcut, but is that extra step necessary?
Currently, no and yes to your questions in that order. But you don’t need to manually run ffmpeg yourself. Properties menu button has something to do that for you. Perhaps we can automate the two steps and use a hidden temporary file.