Hi, im working with tsmuxer (v. 1.10.5). Its working fine, with MKV files. Im converting them to BD, and then im burning the folders in order to play the movie in a standalone BD player.
When converting widescreen formats, the subtitles display fine, but when i convert 4:3 format MKV, the subtitles display in the right side of the screen, not in the center

Do you know what im doing wrong?

Thanks in advance