
The advantage is that as of Qt 6.5 the "Fusion" style properly supports Windows 10's & 11's dark application mode.
MKVToolNix GUI: only on Windows: the GUI now uses Qt's "Fusion" style instead of the deprecated "Windows Vista" style. This discards any remaining packets of other tracks. mkvmerge, MKVToolNix GUI's multiplexer: added an option to stop processing after the primary video track ends called `-stop-after-video-ends`. mkvmerge: MP4 reader: the comment & encoder meta data (content of the `.©cmt` & `….©too` atoms) will now be copied over as global tags `COMMENT` & `ENCODER` respectively. mkvmerge: MP4 reader: the title/movie name meta data (content of the `.©nam` atom) will now be copied over as the segment title track header attribute. mkvmerge: Matroska reader: when reading WebM files that use block additions with ID 4 (HDR for VP9) an appropriate block addition mapping will be created automatically.
mkvmerge: the maximum block addition ID track header value is now calculated automatically from both the existing mappings & the actually used block additions in the block groups. Currently only implemented for Matroska files where it contains the number of cue points.
mkvmerge: JSON file identification: added a child element called `num_index_entries` to the `properties` track element containing the number of index entries found for a track.Removing block additional data is not possible anymore, as it is often required for proper decoding. mkvmerge: removed the option `-blockadd`.