when converting mkv files with subtitle to e.g. mp4, the subtitle in most cases is lost
The above summary is the result of pains taking gradual elimination process. At the end of this eventually only one single test.mkv file with (English) subtitle was used for mp4 conversion. The ~50 test runs resulted in 48 cases with the subtitle completely missing, in one attempt the subtitle could be shown on playback by selecting the "Subtitle" tab and in one case the subtitle remained on the converted mp4 file.
VLC version: 3.0.6 Operating system: Windows 10 Education 1803 Hardware: HP Pro 3500 series System type: 64 bit operating system Processor:Inte(R) Core(TM) i3-3220 CPU