instal the new version for apple MKVToolnix 81.0.0

Workaround for the player issues listed in #3643.

alpha channel data in VP9 with a “Block Addition ID” value of 1, which is also its default value. mkvmerge: added a new hack always_write_block_add_ids that can be used as a workaround for players that don’t support the handling of missing “Block Addition ID” sub-elements of “Block More” elements in block additions properly.mkvmerge: file identification: the JSON identification output schema version has been bumped to 19.mkvmerge: MPEG transport stream reader: teletext subtitles intended for hearing impaired people (type 0x05) are now marked as such via the appropriate flag in the track headers.mkvmerge: Matroska reader: the file’s timestamp scaling factor will be reported in JSON identification mode as the container property timestamp_scale.mkvmerge: Matroska reader: the “video alpha mode” track header property will be reported in JSON identification mode as the track property alpha_mode.mkvmerge: Matroska reader: the “video alpha mode” track header property will be copied to the output file if present.Here are the NEWS since the previous release: New features and enhancements

The other Linux binaries are still being built and will be available over the course of the next couple of hours. The Windows and macOS binaries as well as the Linux AppImage are available already. You can download the source code or one of the binaries. The program now requires Qt 6.2 or newer for compilation. One important change is that Qt 5 is not supported anymore. This one with lots of bug fixes & enhancements. Happy new year! Good time for a new release, I guess.

Instal the new version for apple MKVToolnix 81.0.0