From a cleared data and cache VLC
The MP4s which I am trying to playback works fine on the first opening but when I try to enable the subtitles it returns me to the directory screen.
On a second opening of the file from a force close of VLC it closes the video screen and directs me back to the main directory screen.
I have created dump logs for both hopefully they show the errors and the logs have been created successfully as after errors occur on both occasions both start and end logging are greyed out so just took dumps.
I can confirm the MP4 and subtitle SRT video and subtitle both work perfectly in the Android Video Player preinstalled by Samsung
https://imgur.com/a/ZAGMUi6
https://we.tl/t-FM959cAhYq
Links might expire let me know if they need re-uploaded.
Thanks