Log message:
mkvtoolnix: updated to 54.0.0

Version 54.0.0 "F Maj Pixie"

New features and enhancements

* mkvmerge: added support for using ISO 639-3 language codes in IETF BF47
  language tags.
* mkvmerge: AC-3 parser: added support for byte-swapped AC-3 data.
* mkvmerge: Matroska reader: for audio tracks that have the bit depth track
  header set mkvmerge will now keep that header even for codecs that don't
  require it for decoding.
* mkvmerge: MPEG transport stream reader, PCM audio tracks: mkvmerge will now
  re-order the channels for 5.1, 7.0 and 7.1 channel tracks from the Blu-ray
  layout to the WAVEFORMATEXTENSIBLE layout expected in Matroska.
* mkvmerge, mkvinfo, mkvpropedit, MKVToolNix GUI: added support for the
  following new track header elements: "hearing impaired" flag, \ 
"visual
  impaired" flag, "text descriptions" flag, "original" \ 
flag, "commentary"
  flag.
* MKVToolNix GUI: added support for using ISO 639-3 language codes in IETF
  BF47 language tags. As there are several thousand of them, they're
  deactivated by default and must be activated in the preferences \ 
("GUI" →
  "Often used selections" → "Languages").
* MKVToolNix GUI: multiplexer: when adding Blu-rays the user can select
  multiple playlists to add simultaneously in the "select playlist to add"
  dialog.
* MKVToolNix GUI: multiplexer: the file name extensions "eb3" and \ 
"ec3" were
  added for Dolby Digital Plus & "mpl" for Dolby TrueHD in the file
  dialogs.
* MKVToolNix GUI: multiplexer: when adding multiple files the dialog asking
  the user what to do with them has gained a new checkbox. If enabled, all
  files containing at least one video track will always be placed in newly
  created multiplex setting.
* MKVToolNix GUI: multiplexer: added a menu entry in the "Multiplexer" for
  adding all files that are currently in the clipboard.

Bug fixes

* all: Windows: fixed compatibility with gettext 0.21 and newer on mingw.
* all: Windows: fixed several of the programs having problems with certain
  Unicode characters (primarily emojis) in file names (e.g. mkvextract
  wrongfully complaining about an "invalid mode" or the GUI not being \ 
able to
  find parts of Blu-ray file structures).
* mkvextract: AAC: fixed wrong channel mask field in the ADTS headers for 7.1
  channel layouts.
* mkvextract: h.265/HEVC extraction: if the first frame starts with the
  parameter sets (SPS, PPS & VPS), the ones from CodecPrivate aren't written
  and the ones from the first frame are kept.
* mkvmerge: fixed the calculation of chapter timestamps read from NTSC
  DVDs.
* MKVToolNix GUI: IETF BCP 47 language widget: the language combo box will now
  always contain the language code the user enters in the free-form field,
  even if it isn't in the list of often-used languages the user configured in
  the preferences.
* MKVToolNix GUI: multiplexer: when browsing for the destination file name the
  default directory is now chosen according to the preferences regarding how
  the destination file name should be formed. For example, if the policy is
  set to "fixed output directory" then that output directory will be \ 
the one
  initially set when the directory selection dialog is opened.
* MKVToolNix GUI: multiplexer: fixed the removal of appended source files if
  the "delete source files" end-of-job action is enabled.
* MKVToolNix GUI: chapter editor: when importing chapters from DVDs the IETF
  BCP 47 language elements will be set, too, not just the legacy language
  elements.

Build system changes

* libEBML v1.4.2 and libMatroska v1.6.3 are now required. The optional,
  bundled copies of both libraries have been updated to those versions. This
  bump in requirements fixes several heap overflow bugs in libEBML.
* MKVToolNix is now using the C++17 library feature "file system library"
  instead of Boost's "file system" and "system" libraries. \ 
For the GNU
  Compiler Collection (gcc) libstdc++ this means v8 or newer is required; for
  clang's libc++ it means v7 or newer. For macOS this means that provided disk
  image will only run on 10.15 "Catalina" or newer.

Log message:
*: Recursive revbump from audio/pulseaudio-14.2.nb1

Log message:
mkvtoolnix: updated to 53.0.0

Version 53.0.0 "Fool's Gold"

New features and enhancements

* mkvmerge: AVI reader: added support for reading the video aspect ratio from
  the video properties header (`vprp` chunk) if present and setting the
  display dimensions accordingly.
* mkvmerge: MP4 reader: for h.264/AVC tracks that don't have an
  `AVCConfigurationBox` (`avcC` atom) in their sample description (`stsd`)
  atom or whose `avcC` atom contains no content `mkvmerge` will now re-derive
  the `AVCConfigurationBox` from the bitstream.
* mkvextract: mkvextract will now check if any of the destination file names
  is the same as the source file name and abort with an error if that's the
  case.
* MKVToolNix GUI: when querying the user for a file name for saving things
  (e.g. multiplexer settings or an attachment in the header editor), the
  automatically suggested file name will now be based on the
  situation-specific file names (e.g. the destination file name for
  multiplexer settings or the attachment's name when saving an attachment in
  the header editor) instead of the directory's name.
* MKVToolNix GUI: multiplexer: when deriving track languages from file names
  the GUI will now select the right-most match instead of the left-most
  one. For example, "La.vie.en.rose.(fr).srt" will now be detected as \ 
French
  (fr) instead of English (en).
* MKVToolNix GUI: preferences: the items in the "pre-defined …" \ 
lists can now
  be renamed by double-clicking with the mouse or pressing the F2 key.
* Windows installer: the `bluray_dump` command-line utility will be installed
  into the `tools` sub-directory. `bluray_dump` can read & dump certain file
  types used on Blu-rays: `.mpls` playlists, `.clpi` clip information
  databases, `.bdmv` index files, `bdmt_….xml` disc library databases and
  `tnmt_….xml` track & chapter name databases.

Bug fixes

* mkvmerge: stretching chapter timestamps with `--chapter-sync` now works
  correctly with floating point values including fractions of floating point
  numbers (e.g. `12.3/45.67`). The tooltips in the GUI have been adjusted
  accordingly.
* mkvmerge: MPEG 1/2 video handling: the "default duration" header \ 
field was
  often half the value it actually should be, resulting in all video frames
  having an explicit block duration with the correct value. This has been
  fixed with a patch by Tom Yan.
* mkvmerge: MPEG 1/2 video handling: the data stored in `Codec private` and
  `Codec state` doesn't contain extensions other than sequence & sequence
  display extensions anymore. Fix by Tom Yan.
* mkvmerge: tag handling: when remuxing a Matroska file with the
  `--no-track-tags`, existing `SOURCE_ID` track tags are now skipped, too.
* MKVToolNix GUI: multiplexer: the drop-down boxes with pre-defined track
  names now follow the order set in the preferences instead of sorting the
  entries alphabetically.

Log message:
mkvtoolnix: updated to 52.0.0

Version 52.0.0 "Secret For The Mad"

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.
* 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.
* MKVToolNix GUI: added an option to the preferences for the window to stay on
  top of other windows.

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.

Build system changes

* libEBML v1.4.1 is now required due to a bug in libEBML that caused pointers
  to just-freed memory being returned to the caller under certain invalid data
  constellations, causing use-after-free errors in all of MKVToolNix's
  programs.

Log message:
*: Recursive revbump from audio/pulseaudio-14.0

Log message:
*: Recursive revbump from boost-1.75.0

Log message:
*: Recursive revbump from textproc/icu-68.1

Log message:
mkvtoolnix: updated to 51.0.0

Version 51.0.0 "I Wish" 2020-10-04

New features and enhancements

* mkvmerge, mkvpropedit, MKVToolNix GUI: IETF BCP 47 language tags: added
  missing support for UN M.49 regions for which there are no corresponding ISO
  3166 alpha codes. This enables language tags such as `es-419` = Spanish in
  Latin America and the Caribbean.
* MKVToolNix GUI: IETF BCP 47 language tags: the text in the widget displaying
  the current language & the corresponding edit button is now displayed like a
  link (depending on the theme: different color & underlined), making it
  clearer that not just the edit button can be clicked but the text, too.

Bug fixes

* mkvmerge: AV1 parser: fixed mkvmerge crashing after uncaught exceptions due
  to certain data conditions. Found by fuzzying.
* mkvmerge: AV1 packetizer: the duration of frames wasn't set properly. When
  appending AV1 IVF or OBU files this meant that the last frame of the Nth
  file and the first frame of file N+1 had the same timestamp.
* mkvmerge: DTS reader: fixed handling of buffers with an odd length when
  byte-swapped DTS is detected so that mkvmerge doesn't abort with a failed
  assertion. Found by fuzzying.
* mkvmerge: h.264/AVC and h.265/HEVC elementary stream readers: mkvmerge will
  no longer claim to recognize data that looks like AVC or HEVC but with
  invalid video width/height values as that lead to failed assertions in
  libEBML later. Found by fuzzying.
* mkvmerge: h.265/HEVC parser: fixed mkvmerge aborting after uncaught
  exceptions due to certain data constellations found by fuzzying.
* mkvmerge: IVF reader: fixed mkvmerge crashing with a "division by zero"
  error due to certain data conditions. Found by fuzzying.
* mkvmerge: fixed mkvmerge aborting with a "division by zero" error \ 
due to the
  timestamp scaling factor being 0 after handling certain data constellations
  found by fuzzying.
* mkvmerge: track statistics: fixed a "division by zero" error when the
  content's shorter than 1ms. Found by fuzzying.
* mkvmerge, mkvinfo, mkvextract, mkvpropedit: Matroska access class: fixed an
  invalid memory access under certain data conditions. Found by fuzzying.
* MKVToolNix GIU: IETF BCP 47/RFC 5646 language tags: the GUI will no longer
  open the language dialog when clicking on a disabled language display
  widget.
* MKVToolNix GUI: IETF BCP 47 language tags: the "variants" \ 
combo-boxes were
  not populated even when the language tag was valid and contained at a
  variant.
* MKVToolNix GUI: IETF BCP 47 language tags: when no language is selected, at
  least one of the other components (extended subtags, region, or variants)
  has something selected and "private use" is not empty, the GUI would \ 
claim
  this to be a valid tag, which it isn't.
* MKVToolNix GUI: multiplexer: when the tracks/chapters/tags selection changes
  from "at least one entry selected" to "no entry selected", \ 
the input
  controls will be reset to their default state and not just disabled.

Build system changes

* `configure` now checks for the presence of the a system-wide installed copy
  of the JPCRE2 C++ wrapper library for the PCRE2 library and uses that if
  it's new enough (at least v10.32.1). If not, the bundled version will be
  used as a fallback.

Log message:
mkvtoolnix: needs pcre2

Log message:
mkvtoolnix: updated to 50.0.0

Version 50.0.0 "Awakenings"

New feature: IETF BCP 47 language tags

* I've written up a [nice FAQ
  \ 
entry](https://gitlab.com/mbunkus/mkvtoolnix/-/wikis/Languages-in-Matroska-and-MKVToolNix)
  about the switch to using IETF BCP 47 language tags, how they interact with
  legacy language elements, how the programs actually behave and how to
  disable their use if necessary.
* mkvmerge: IETF BCP 47/RFC 5646 language tags: mkvmerge will now accept full
  BCP 47 language tags for all options taking a language. mkvmerge will always
  write "LanguageIETF" track header elements. If the language tag \ 
contains a
  valid ISO 639-2 language code it will also set the legacy "Language" \ 
track
  header element to the included ISO 639-2 code.
* mkvmerge: IETF BCP 47/RFC 5646 language tags: if present the \ 
"LanguageIETF"
  track header element will be reported as the `language_ietf` property in
  JSON identification mode.
* mkvmerge: IETF BCP 47/RFC 5646 language tags in chapters: mkvmerge will now
  write "ChapLanguageIETF" elements when creating chapter atoms, \ 
either when
  reading the simple chapter format or when generating chapters due to the
  `--generate-chapters` command line option.
* mkvmerge: IETF BCP 47/RFC 5646 language tags in tags: mkvmerge will now
  write "TagLanguageIETF" elements when creating "simple \ 
tag" elements, either
  when reading tag XML files or when generating them.
* mkvmerge: IETF BCP 47/RFC 5646 language tags: added an option
  `--disable-language-ietf` that causes mkvmerge to only write the legacy
  language elements.
* mkvmerge, mkvpropedit, MKVToolNix GUI's chapter editor: IETF BCP 47/RFC 5646
  language tags in chapters: when reading XML chapter files the programs will
  now add "ChapLanguageIETF" elements for atoms that don't contain \ 
them. The
  values are derived from existing "ChapterLanguage" elements.
* mkvpropedit: IETF BCP 47/RFC 5646 language tags: setting/deleting the track
  language now acts on both the old language element as well as the
  "LanguageIETF" track header element.
* mkvpropedit: IETF BCP 47/RFC 5646 language tags: added an option
  `--disable-language-ietf` that causes mkvpropedit to apply changes to the
  `language` track header property only to the legacy language track header
  element.
* mkvinfo: IETF BCP 47/RFC 5646 language tags: added support for the
  "LanguageIETF" track header element.
* MKVToolNix GUI: multiplexer: added full support for IETF BCP 47/RFC 5646
  language tags for both track and chapter languages.
* MKVToolNix GUI: chapter: added full support for IETF BCP 47/RFC 5646
  language tags for chapter languages.
* MKVToolNix GUI: header editor: added full support for IETF BCP 47/RFC 5646
  language tags for track header languages. The header editor allows editing
  of the legacy language elements and the IETF BCP 47 language elements
  independent of each other.

Other new features and enhancements

* mkvmerge: the chapter generation mode `when-appending` now also works with
  the splitting modes `parts:` & `parts-frames:` when using the `…,+…` syntax
  for appending other sections of the source file to the same destination
  file.
* MKVToolNix GUI: multiplexer: the file selection dialogs now include the
  extension `.dtsma` for DTS files.
* mkvmerge: MP4 reader: sped up parsing MP4 DASH files with a lot of segments
  (`trun` atoms) quite a bit.
* The PCRE2 regular expression library is now used instead of `std::regex` for
  big performance improvements in all places where regular expressions are
  used for parsing big chunks of text, e.g. in the subtitle parsers.
* all programs: Windows: all programs now support long file names on Windows
  10 release 1604 if they're turned on in the registry.

Bug fixes

* MKVToolNix GUI: preferences: under certain conditions changing the selected
  entry in the page tree on the left did not cause the page shown on the right
  to be updated.
* mkvmerge: splitting text by a fixed string (e.g. `,`) is now done by using
  `std::string.find()` instead of using a regular-expression-based text
  splitting function, greatly improving its performance.
* mkvmerge: mkvmerge will now read-buffer file I/O when probing text file
  formats which increases its speed significantly on Windows.
* mkvmerge: MP4 reader: fixed handling of `tkhd` atoms of version 1.

Build system changes

* The PCRE2 library (the 8-bit variant) is now required.