ffmpeg -i "tmp_normalized.mkv" -c copy -c:s mov_text -metadata:s:s:0 language=eng "RCT-778-engsub_01-33-30_final.mp4"
VLC Media Player or MPC-HC will handle it. If subtitles don’t show, ensure the .srt file has the same name as the video file (e.g., RCT-778-engsub.mp4 and RCT-778-engsub.srt ). RCT-778-engsub convert01-33-30 Min