SubSync

Source (link to git-repo or to original if based on someone elses unmodified work): https://github.com/eyalkt/vlc-subtitles-sync

Description:

VLC extension to easily synchronize subtitles to media, using "catch" and "release".
Subtitle's not displaying at the right time? Easy, just "catch" a subtitles line, and "release" it at the correct time. Synchronization is done!

installation:

Windows: copy SubSync.lua to: ...VideoLANVLCluaextensions
Linux: (xubuntu) copy SubSync.lua to: ~snap/vlc/365/.local/share/vlc/lua/extensions/ (create subfolders if not present)

(re)start VLC. That's it.

usage:
View -> SubSync to open.
First, load media (movie, song ...) and subtitles (you can use VLsub addon for that),
then,
Catch a subtitle line, by clicking the 'Catch' button when the line appears, and
Release the line at the correct time.

Tested on Windows and Linux (xubuntu 18.04.1) using VLC version 3.0.3 .
Please comment if you found this addon working on a macOS machine.

If you like this addon please up the score above, have any issue or suggestion feel free to comment below :)

note: this addon is not related what so ever to other software named subsync