7 hours ago
Can you try remuxing the file manually and test the new file? In a powershell or command prompt.
Code:
ffmpeg -fflags +genpts+igndts -i "K:\Media\Movies\Founding of an Army (2017)\The Founding of An Army_t01.mkv" -map 0 -codec copy max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts disabled newFile.mkv