Suggestion: Currently, the timing of the subtitles appearing is not accurate.

[nangonghan]

Hi there, thank you very much for releasing this version. Currently, I have also implemented a Node version based on your code. However, there is a problem that the subtitles appear before the speaker starts talking, which is quite troubling. I noticed that whisper_cpp itself has this problem, and someone has already implemented a Python version that seems to have fixed this issue.

Currently, the solution I can think of is to use ffmpeg's silent detection and dynamically adjust the timing of the srt subtitles.