MKVToolnix full changelog

New features and enhancements:
MKVToolNix GUI: job queue: the maximum number of jobs to run concurrently can now be increased in the preferences. The default remains at 1. Implements #2984.
MKVToolNix GUI: the GUI will now add a context-specific default extension to file names selected for saving on platforms that don't add one itself e.g. GNOME). For example, when saving multiplexer settings the extension mtxcfg` will be added. Implements #2983.
MKVToolNix GUI: added an option to the preferences for the window to stay on top of other windows. Implements #2967.
Bug fixes:
mkvextract: h.265/HEVC extraction: the code for skipping extraction of prefix SEI NALUs in the first frame was skipping two bytes too few, resulting in broken processing of all following bytes. Patch by Mike Chen.
libEBML: the optional, bundled version of libEBML was updated to v1.4.1.

New features and enhancements:
mkvmerge: when splitting, the placeholder `%c` can be used in the destination file name. It'll be replaced by the name of the first chapter in the file. Implements #2791.
mkvmerge: when reading MPLS playlists mkvmerge will include a tag named`SOURCE_ID` in the track's statistics tags that conveys the fact that the source was a Blu-ray and what the track's ID was in the source container. When reading Matroska file existing `SOURCE_ID` tags will be kept. The format used is the same format MakeMKV uses. Implements #2774.

New features and enhancements:
mkvmerge: mkvmerge has never supported appending & splitting FLAC audio tracks. mkvmerge will now emit error messages when the user attempts either instead of continuing and creating invalid FLAC tracks.
MKVToolNix GUI: added an option in the preferences to turn on eliding text on tab headers. If enabled, tab names will be shortened so that all tab headers fit into the window's width. Implements #2768.

New features and enhancements:
MKVToolNix GUI: header editor: the attachments can now be reordered via drag & drop. Implements #2753.

New features and enhancements:
MKVToolNix GUI: using one of the command line options `--info`, `--edit-headers` or `--edit-chapters` will make the GUI select the corresponding tool on startup even if no further file name is given. Implements #2723.
MKVToolNix GUI: multiplexer: added a setting in the preferences for changing the location of the MediaInfo executable for when the user accidentally selected the wrong one.

New features and enhancements:
mkvmerge: added an option for creating byte-identical files:
`--deterministic <seed>`. Part of the implementation of #2698.
mkvmerge: Matroska reader: mkvmerge will remove the `icpf` atom headers if they're present in frames read from Matroska files. Implements #2692.

New features and enhancements:
mkvmerge: Matroska reader: Vorbis tracks: stream comments (aka Vorbis
comments) will be converted to Matroska attachments (for cover arts) and
Matroska track tags (for other comments). Additionally the stream comments

New features and enhancements:
mkvmerge: MP4 reader: added support for BMP covert art images.
MKVToolNix GUI: multiplexer: added an option to disable deriving the destination file name from the file title. Implements #2648.
MKVToolNix GUI: multiplexer: the content of the "stereoscopy" combo box has been simplified making the box's minimum width much smaller, allowing the user to resize the GUI's whole window to a much smaller width.
MKVToolNix GUI: multiplexer: whenever the user changes the "aspect ratio" or "display dimensions" controls, the corresponding radio button will be activated automatically. Implements #2651.
MKVToolNix GUI: Windows: added a setting in the preferences to disable the GUI's dark color mode even if Windows's app color mode is set to dark. Implements #2646.
MKVToolNix GUI: Windows: replaced the dark mode introduced in v39 with another dark mode that's less wasteful with space between widgets.

New features and enhancements:
mkvmerge: Blu-ray: when reading an MPLS playlist mkvmerge will look up and use chapter names from the Blu-ray's "track/chapter names" meta data if it exists. Part of the implementation of 2486.
mkvmerge: MP4 reader: if present, cover art images (the `meta.udta.ilist.covr` atom) will be converted into attachments.
MKVToolNix GUI: multiplexer: when adding a playlist from a Blu-ray disc, the disc library meta data will be parsed, and the biggest thumbnail, if present, will be added as a new attachment with name `cover.jpg` (extension depends on thumbnail's extension). Implements #2644.
MKVToolNix GUI: multiplexer: when adding a playlist from a Blu-ray disc, the title from the disc library meta data will be set as the new file title if the disc library meta data contains one & no title has been set yet.
MKVToolNix GUI: multiplexer: the automatically generated destination file name will now be based on the file title if one is set at that point.

New features and enhancements:
mkvextract: chapters, tags & cue sheets will now be written to standard output if no file name is given, same as if `-` is given as the file name.
MKVToolNix GUI: job queue: added a new setting in the preferences' "job queue & job status" section that, when enabled, will cause the GUI to remove all output files created by jobs that are either aborted by the user or that end in an error. Implements #2614.