Subtitle syncronization can't be adjusted on AVI files
On VLC v2.1.5, on Win7x64, subtitle synchronization (advancing/delaying) doesn't work at all when using subtitle files (.srt) while playing an AVI. This is true using either keyboard shortcuts (h, g) or the menus (Tools | Track Syncronizaiton | Subtitles/Video | Subtitle Track Synchronization).
I didn't find any similar bug reported in the tracker, but in the forums, people have reported this problem for years ( https://forum.videolan.org/viewtopic.php?f=14&t=91682 ). The problem is easily duplicated on my laptop and desktop (same OS and VLC version, but CPU is i5 vs. AMD C-series).
If you need the .avi and an .srt file which caused the problem, please contact me.