Software Update: MKVToolNix 49.0.0

Moritz Bunkus has released version 49 of MKVToolNix. With this open source program, matroska files can be viewed, edited and converted. For example, sound tracks and subtitles can be added, removed or set as default. MKVToolNix is ​​a collection of separate command line tools, but a graphical user interface is also included. Downloads are available for Windows, macOS, and various Linux distributions. The changelog for this release looks like this:

New features and enhancements

• mkvmerge: added support for copying the new track header elements
  BlockAddIDName, BlockAddIDType, BlockAddIDValue and
  BlockAddIDExtraData from Matroska files if they exist. Part of the
  implementation of #2887.
• mkvinfo: added support for the new track header elements
  BlockAdditionMapping, BlockAddIDName, BlockAddIDType, BlockAddIDValue
  and BlockAddIDExtraData. Part of the implementation of #2887.
• MKVToolNix GUI: multiplexer: the list of recent directories can now be
  edited in the preferences → “Multiplexer” → “Destination file
  name”. Implementations #2861.
• MKVToolNix GUI: preferences: the values ​​in the various “predefined values”
  lists can now be re-ordered freely by dragging & dropping.

Bug fixes

• mkvmerge: Matroska reader: when reading tracks (eg a subtitle track) from
  Matroska files with their default track flag set to yes, and when
  overwriting those via the command line to no, mkvmerge would not promote
  additional tracks of the same type from other files (eg another subtitle
  track from an SRT file). Fixes #2863.
• mkvmerge: SRT reader: empty lines inside entries were doubled. Fixes #2888.
• mkvmerge: subtitles: when calculating the rounded duration of each entry the
  error from rounding the corresponding timestamp will be taken into
  account. Fixes #2890.
• mkvextract: SSA/ASS extraction: mkvextract is no longer inserting empty
  lines before the Dialogue: lines. Fixes #2876.
• mkvextract: USF subtitles: start & end timestamps were too high by a factor
  or 1,000,000. Fixes #2875.
• MKVToolNix: info tool: when saving to a text file the checkbox “Save as
  default for saving output to text files” did nothing. Fixes #2869.
• MKVToolNix: info tool: when saving to a text file in “all elements in a
  tree-like structure” mode, the GUI always stopped at the first cluster
  regardless of the setting of the “verbosity” option.
• MKVToolNix GUI: preferences: when tooltips were disabled the dialogs for
  adding new entries to the various “predefined values” lists were missing
  their texts.
• Windows installer: the images are shown again. Fixes #2868.
• configure: fixed detection of QtDBus. Fixes #2886.

Build system changes

• libMatroska v1.6.1 is now required. The bundled version has been updated to
  that version.