mkvpropedit
Modify properties of existing Matroska files without a complete remux. tldr-pages
On Linux
Linux
Delete title
mkvpropedit --delete title path/to/file.mkvIdentifyMark subtitle track 3 as SDH - Subtitles for deaf and hearing impaired
mkvpropedit path/to/file.mkv --edit track:s3 --set flag-hearing-impaired=1IdentifyMark audio track 2 as Default
mkvpropedit path/to/file.mkv --edit track:a2 --set flag-default=1IdentifyDelete the name of video track 1
mkvpropedit path/to/file.mkv --edit track:v1 --delete nameIdentify