Thema: MKVToolnix ...

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Changelog

* Released v9.6.0 "Slave To Your Mind".

2016-11-28  Moritz Bunkus  <moritz@bunkus.org>

        * mkvmerge & mkvextract: added support for HDMV TextST subtitles.

2016-11-20  Moritz Bunkus  <moritz@bunkus.org>

        * mkvextract: VobSub bug fix: mkvextract will add a "langidx" line
        to the .idx file upon extraction. Fixes #1810.

2016-11-14  Moritz Bunkus  <moritz@bunkus.org>

        * MKVToolNix GUI: multiplexer enhancement: added a column "source
        file's directory" to the track list. Implements #1809.

        * MKVToolNix GUI: multiplexer enhancement: added an option for
        selecting all tracks of the currently selected source files in the
        source file context menu. Inspired by #1809.

2016-11-07  Moritz Bunkus  <moritz@bunkus.org>

        * MKVToolNix GUI: job output tool bug fix: the button for
        acknowledging warnings & errors wasn't properly disabled when the
        user used outside methods of acknowledging them (e.g. via the menu
        or via the job queue). Fixes #1802.

2016-10-31  Moritz Bunkus  <moritz@bunkus.org>

        * mkvmerge: MPLS parser bug fix: fixed reading the "in" & "out"
        timestamps for "play items". This bug resulted in mkvmerge not
        reading the correct range from the referenced M2TS file under
        certain rare circumstances.

2016-10-30  Moritz Bunkus  <moritz@bunkus.org>

        * mkvmerge: bug fix: mkvmerge was entering endless loops under
        certain conditions when appending files. This was a regression
        introduced with the fix to #1774 (using very large --sync values
        causing mkvmerge to abort).

2016-10-23  Moritz Bunkus  <moritz@bunkus.org>

        * MKVToolNix GUI: new feature: added options in the preferences to
        only show the list of often used languages/country codes/character
        sets in their respective selections instead of both the often used
        and the full list. Implements #1796.

2016-10-16  Moritz Bunkus  <moritz@bunkus.org>

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Whats new:>>

MKVToolNix GUI: multiplex tool bug fix: under certain circumstances the GUI was creating invalid JSON files when starting to multiplex resulting in an error message ("JSON option files must contain a JSON array consisting solely of JSON strings").

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Changelog

Important notes:

build system: the included version of the "drake" build tool has been
removed. Since Ruby 2.1 rake has supported parallel builds, too. The
MKVToolNix build system has been adjusted to enable parallel builds by
default.

New features and enhancements:

mkvmerge: VobSub in Matroska: mkvmerge will now create and use a default
index for VobSub tracks read from Matroska files that are missing their
CodecPrivate element (which normally contains said index). Implements #1854.
GUI: added checks for several common problems with the installation. These
checks will be executed when the GUI starts, and any problems will be
reported to the user.
mkvmerge: added the ISO 639-2 language codes "qaa" and "qad" (both are
titled "reserved for local use") as both are used often in France. See #1848
for more information.
mkvmerge: the JSON identification result now includes a track's codec delay
if set (only for Matroska source files). The JSON schema version has been
bumped to 6.
mkvmerge: MPEG TS: added a workaround for files where the subtitle packets
are multiplexed properly, but where their timestamps are way off from the
audio and video timestamps. Implements #1841.
mkvmerge: added support for Digital Video Broadcasting (DVB) subtitles
(CodecID `S_DVBSUB`). They can be read from MPEG transport streams and from
Matroska files. Implements #1843.

Bug fixes:

mkvmerge: MP4 reader: when an MP4 file contained fewer entries for
timestamps than frames (which they never should), mkvmerge would use 0 as
the timestamp for all the other frames. This resulted in effects such as the
last frame of an output file having a timestamp of 0 and in split files
having a much longer duration than they should have. Fixes #1847.
GUI: the cache cleanup process that's run automatically when the GUI starts
no longer blocks file identification until it is finished. Additionally the
process will only be run once per release of MKVToolNix. Fixes #1860.
GUI: certain failures during file identification that can be traced to
broken installations (e.g. mkvmerge being too old) won't be stored in the
cache anymore. Without this fix the GUI would still use the cached failed
identification result even though the underlying might have already been
fixed.
mkvmerge: fixed that the error message "not enough space on disk" was shown
twice on some operating systems. Fixes #1850.
mkvmerge, Matroska: if a codec delay is set for a track in the input file,
it is kept. Fixes #1849.
GUI: multiplexer: changing default values in the preferences (e.g. the
default track language to set) did not affect files whose identification
results had already been cached.
mkvmerge, MP4: fixed detection of MP3 audio when the object type ID in the
ESDS signals MP2 and the track headers have invalid values for number of
channels or sampling frequency. Fixes #1844.

Build system changes:

nlohman json-cpp: configure now looks for a system-wide installed version of
the nlohmann json-cpp header-only library. If one is found, it is used;
otherwise the included version will be used. Implements #1858.
If MKVToolNix is built with rake v10.0.0 or newer, its "multitask" feature
will be turned on allowing automatic parallel builds.
CURL is no longer used by MKVToolNix and is therefore not required
for building anymore.
Other changes:


GUI: the update check now uses Qt's networking classes instead of CURL.
The command line option "--check-for-updates" has been removed, even
though the deprecation warning in release 9.7.0 stated that it would
be removed in 2018.

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Changelog

## New features and enhancements

* GUI: chapter editor: added a character set selection in the preferences for
  text files. If a character set is selected there, it will be used instead of
  asking the user when opening text chapter files. Implements #1874.
* GUI: multiplexer: added a column "character set" to the "tracks, chapters
  and tags" list view showing the currently selected character set for that
  track. Implements #1873.
* mkvmerge: added an --engage option "all_i_slices_are_key_frames" for
  treating all I slices of an h.264/AVC stream as key frames in pathological
  streams that lack real key frames. Implements #1876.
* GUI: running programs after jobs: added a new variable
  <MTX_INSTALLATION_DIRECTORY> for the directory the MKVToolNix GUI executable
  is located in.
* mkvmerge: DVB subtitle tracks whose CodecPrivate data is only four bytes
  long will now be fixed up to the proper five bytes by adding the subtitling
  type byte.
* mkvmerge: MP4 reader: "ctts" version 1 atoms are now supported.

## Bug fixes

* mkvmerge: AC-3 handling: some source files provide timestamps for audio
  tracks only once every n audio frames. In such situations mkvmerge was
  buffering too much data resulting in a single gap in the timestamps of one
  frame duration after frame number n - 1 (the second audio timestamp read
  from the source file was used one output frame too early). Fixes #1864.
* mkvmerge: MP4 reader: mkvmerge was only reading a small part of MP4 DASH
  files where the first "moov" "mdat" atoms occur before the first "moof"
  atom. This is part of the fix for #1867.
* mkvmerge: MP4 reader: edit list ("edts" atoms) that are part of the "moof"
  atoms used in MP4 DASH files weren't parsed. Instead the edit lists from the
  main track headers inside the "moov" atom were used. This is part of the fix
  for #1867.
* mkvmerge: MP4 reader: when an MP4 DASH file contained both normal chunk
  offset table ("stco"/"co64" atoms) in their regular "moov" atoms, a
  sample-to-chunk table ("stsc" atom) whose last entry had a "samples per
  chunk" count greater than 1 and DASH "trun" atoms, then mkvmerge was
  calculating wrong positions the frame content. This is part of the fix for
  #1867.
* mkvmerge: MP4 reader: mkvmerge couldn't deal with the key frame index table
  having duplicate entries. The result was that only key frames up to and
  including the first duplicate entry were marked as key frames in the output
  file. All other frames weren't, even though some of them were referenced
  from the key frame table after the first duplicate entry. This is part of
  the fix for #1867.
* mkvmerge: MP4 reader: when an MP4 file contained more than one copy of the
  "moov" atom (the track headers etc.), mkvmerge was parsing them all adding
  tracks multiple times. Fix for #1877.
* mkvmerge: MP4 reader: fixed an integer overflow during the timestamp
  calculation leading to files with wrong timestamps. Such files could not be
  played back properly by most players. Fixes #1883.
* mkvmerge: MPEG TS reader: if the PMT lists a DVBSUB track, mkvmerge will now
  recognize it without having to find a packet for it within the probed range.
* mkvmerge: splitting by parts (both the "timestamps" and the "frames"
  variants): fixed the calculation of track statistics tags. When calculating
  the duration the skipped portions weren't taken into account leading to a
  too-high duration. As a consequence the BPS tag (bits per second) was wrong,
  too. Fixes #1885.
* mkvmerge: reading files with DVB/HDMV TextSV subtitle tracks with invalid
  CodecPrivate caused mkvmerge to abort with an error from boost::format about
  the format string not having enough arguments. Fixes #1894.
* mkvmerge: fixed misdetection of certain AC-3 files as MP3 files which led to
  an error message that "the demultiplexer could not be initialized".
* mkvmerge: fixed huge memory consumption when appending big Matroska files
  with sparse tracks (e.g. forced subtitle tracks). The Matroska reader will
  now queue at most 128 MB of data. Fixes #1893.
* mkvmerge: MP4 reader: the timestamps of all multiplexed tracks will now be
  0-based properly.
* mkvmerge: MP4 reader: the DTS-to-PTS offsets given by the "ctts" atoms are
  now applied for all tracks containing a "ctts" atom, not just h.264 & h.265
  tracks.

## Build system changes

* Up to and including release 9.8.0 the man pages and their translations came
  pre-built and bundled with the source code. Those pre-built files have now
  been removed and must be built during the build process. Therefore the tool
  "xsltproc" and the DocBook XSL stylesheets for man pages are now required
  dependencies. Additionally the tool "po4a" must be installed for the
  translated man pages to be built and installed, though this is optional.

  In order to facilitate finding the new requirements new options have been
  added to confiure: "--with-xsltproc=prog", "--with-docbook-xsl=dir",
  "--with-po4a=prog" and "--with-po4a-translate=prog.
* pugixml detection will be attempted via "pkg-config" first. If that fails,
  "configure" will fall back to the previous method of trying just to compile
  and link a test program with the standard include and library locations.
  Implements #1891.

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Changelog

NEW FEATURES AND ENHANCEMENTS:

mkvmerge: AVC/h.264 parser: mkvmerge will now drop all frames before the first key frame as they cannot be decoded properly anyway. See #1908
mkvmerge: HEVC/h.265 parser: mkvmerge will now drop all frames before the first key frame as they cannot be decoded properly anyway. See #1908
mkvmerge: HEVC/h.265 parser: added a workaround for invalid values for the "default display window" in the VUI parameters of sequence parameter sets. Fixes #1907

BUG FIXES:

mkvmerge: MP4 reader: fixed track offsets being wrong in certain situations regarding the presence or absence of edit lists ('elst' atoms) & composition timestamps ('ctts' atoms). Fixes #1889
mkvmerge: MP4 reader: offsets in "ctts" are now always treated as signed integers, even with version 0 atoms
mkvinfo: the timestamps of SimpleBlocks with negative timestamps are now shown correctly
mkvmerge: Matroska reader: fixed handling BlockGroups and SimpleBlocks with negative timestamps
mkvmerge: MP3 packetizer: the MP3 packetizer will no longer drop timestamps from source containers if they go backwards. This keeps A/V in sync for files where the source was in sync even though their timestamps aren't monotonic increasing. Fixes #1909
mkvmerge: AVC/h.264 parser: mkvmerge will now drop timestamps from the source container if no frame is emitted for that timestamp. Fixes #1908
mkvmerge: HEVC/h.265 parser: mkvmerge will now drop timestamps from the source container if no frame is emitted for that timestamp. Fixes the HEVC equivalent of the problem with AVC described in #1908
mkvextract: SSA/ASS: fixed extraction when the "Format" line in the "[Events]" section contains less fields than the default for SSA/ASS would indicate. Fixes #1913

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Changelog

## New features and enhancements

* mkvmerge: FLAC reader: added support for handling embedded pictures as
  attachments. Implements #1942.
* mkvmerge: MP4 reader: merged pull request #1804 adding support for parsing
  the "COLR" atom and including its values as track headers.
* MKVToolNix GUI: watch jobs: the user can now have the GUI execute an action
  once as soon as the current job or the whole queue finishes. The actions are
  the same ones that can be configured to be run automatically after job or
  queue completion.
* MKVToolNix GUI: implemented several built-in actions that can be executed
  either on special events or once via the "watch jobs" tool. These are:
  playing an audio file (implemented for all operating systems); hibernating,
  sleeping and shutting down the computer (only implemented for Windows and
  for Linux systems using systemd).
* MKVToolNix GUI: multiplex tool: added a new option for what to do after
  starting to multiplex/adding to the job queue: "close current settings" will
  close the current multiplex settings without opening new ones.

## Bug fixes

* mkvmerge: AAC parser: fixed mis-detection of certain data as valid ADTS AAC
  headers resulting in memory allocation failures. Fixes #1941.
* mkvmerge: AVC/h.264 parser: mkvmerge will now ignore bogus timing
  information in the sequence parameter sets (values indicating more than
  100000 progressive frames per second). Fixes #1946.
* mkvmerge: AVC/h.264 & HEVC/h.265 parsers: all trailing zero bytes will now
  be removed from NALUs. Fixes #1952.
* mkvmerge: HEVC/h.265 parser: fixed copying the `bitstream_restriction_flag`
  and all dependent fields in the VUI parameters of the sequence parameter
  sets. Fixes #1924.
* mkvmerge: HEVC/h.265 parser: fixed the calculation of the number of
  parameter set arrays in the HEVCC data structure stored in
  CodecPrivate. Fixes the video-related part of #1938.
* mkvmerge: HEVC/h.265 parser: fixed writing superfluous and uninitialized
  bytes at the end of the HEVCC data structure stored in CodecPrivate. Another
  fix for the video-related part of #1938.
* mkvmerge: HEVC/h.265 parser: fixed the assumption that the HEVCC data
  structure always includes arrays for all parameter set types (VPS, SPS, PPS
  and SEI), and that the order is always VPS → SPS → PPS → SEI. Instead now
  only the arrays actually present are parsed, and they can be in any order.
  This fixes mkvinfo's output for Matroska files created from files such as
  the one from #1938.
* mkvmerge: AVC/h.264 packetizer: when reading a framed track (e.g. from
  Matroska or MP4 files), specifying a default duration as fields (e.g. `50i`)
  would result in double the actual duration for each frame and the track's
  default duration header field. Fixes #1916.
* mkvmerge: Matroska reader: invalid track language elements are now treated as
  if they were set to `und` = "undetermined". See #1929 for context.
* mkvmerge: MPEG TS reader, AAC: mkvmerge will now require five consecutive
  AAC headers with identical parameters before track type determination is
  considered valid. This avoids false positives and consequently wrong track
  parameters. Fixes the audio-related part of #1938.
* mkvmerge: fixed an endless loop in certain circumstances when splitting by
  `parts` or `parts-frames` and the start of the file is discarded. Fixes
  #1944.
* MKVToolNix GUI: multiplexer tool: the "show command line" dialog will no
  longer include the mkvmerge executable's location as the first argument for
  the two "MKVToolNix option files" escape modes. Fixes #1949.
* MKVToolNix GUI, header editor: empty track language elements are now treated
  the same as those set to invalid ISO 639-2 codes: as if they were set to
  `und` = "undetermined". See #1929 for context.

## Build system changes

* bug fix: configure now looks for the `strings` binary by using the
  `AC_CHECK_TOOL()` autoconf macro. That way it will be found in multiarch
  setups, too. Fixes #1923.
* bug fix: the environment variable USER_CXXFLAGS was accidentally removed
  from the compiler flags in release 9.8.0. It's been re-added. Fixes #1925.
* The `.desktop` files have been renamed to
  `org.bunkus.mkvtoolnix-gui.desktop` and `org.bunkus.mkvinfo.desktop`. This
  allows Wayland compositors to associate the correct icons with running
  applications for e.g. task switchers. Fixes #1948.
* Qt's multimedia component is required for compilation of the GUIs since
  version 11.

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MKVcleaver extracts various data from MKV video files. It can be used in a batch mode (loading and extracting data from many files) as well as single file mode. It has a simple interface, but a lot of functionality.

The program is a graphical user interface for mkvtoolnix.

License:    GPL

Changelog

Changes:

Implemented SQLIte database as the storage engine for internal arrays and the log
Added utility to rotate logs
Added log settings and log viewer
Added more detailed logging
Update check is now using JSON format
Changed mkvmerge -i to mkvmerge -J. MKVCleaver is now using JSON format to query MKVtoolNix CLI tools
Removed mkvextract version check
Added minimum MKVToolNix version. Minimum version is 10
Added [LNG3], [LNGf] and [Delay] placeholders
Removed [vDelay] placeholder
Changed how [aDelay] placeholder works
Added Quick and Full VFR detection modes
Added VFR to CFR conversion (experimental)
Removed avdump2
Added batch filters for extraction
Moved About button under Help menu
Added Segment UIDs extraction
Added ability to add files to MKVCleaver by dragging and dropping a text file
Added instance check. Max instances is now 1
Removed Audio FLAC in OGG container option
Major source changes to accommodate SQLite DB and Windows 10
MKVCleaver minimum GUI size is now set for both x and y axis
Minor changes to custom.ini file options
Timecodes checkbox text will be red when Timecodes Only option is selected (visual aid)

Fixes:

Fixed Drag & Drop on Windows 10
Fixed state and text detection for files and tracks windows under Windows 10
Fixed Go button state changes based on what is selected
Fixed Audio track language was displayed as English when no language was set
Fixed h.264 to avi conversion errors
Optimized code to idle CPU when nothing is happening
Changed acv2avi.exe to the version from VideoHelp

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Changelog

New features and enhancements:

MKVToolNix GUI: the key combination Ctrl+Shift+Space will now toggle the selection of the current item in all tree views where multiple selections are allowed. Implements #1983.
MKVToolNix GUI: chapter editor: added the extension `*.cue` (for cue sheet files) to the "open chapter file" dialog.
mkvmerge: cue sheet parser: if the cue sheet contains a non-empty `TITLE`
entry and if no other segment title has been set yet, then the segment title will be set to the cue sheet's `TITLE` value. Implements #1977.
mkvmerge, MKVToolNix GUI (multiplexer): added an option `--no-date` that
prevents the "date" field from being written to the segment information headers. Implements one half of #1964.
mkvpropedit, MKVToolNix GUI: header editor: added support for editing the
"date" segment information field. Implements the other half of #1964.

Bug fixes:

MKVToolNix GUI: preferences ? job actions, type "play audio file": the GUI will no longer clear the audio file name input if the user aborts the audio
file selection dialog.
MKVToolNix GUI: preferences ? job actions, type "play audio file", on Windows: the default "play audio" action was pointing to the wrong directory. Existing configurations with such a wrong path will be fixed automatically upon starting the GUI. Fixes #1956.
mkvmerge: HEVC/h.265 parser: fixed the superfluous copying of the `bitstream_restriction_flag` and its dependent flags in the VUI parameters
of the sequence parameter sets if the timing information is present, too. This fixes #1924 properly, and it also fixes #1958.
mkvmerge: MPEG TS reader, AAC parser: the MPEG TS reader will now force the AAC parser to use the multiplex mode that the MPEG TS reader has detected (e.g. LOAS/LATM). This prevents the AAC packetizer from mis-detecting it in its own attempt to identify the mode. Fixes #1957.
mkvmerge: MPEG TS reader: valid MPEG transport streams that start with an
h.264/h.265 start code (e.g. a file created by cutting at an arbitrary
position) were not recognized as a supported file type.
mkvmerge: MPEG TS reader: fixed a potential read access from invalid memory
addresses in the code parsing the program map table (PMT).
mkvmerge: MPEG TS reader: if packets are encountered that belong to a PID
not listed in the program map table (PMT), mkvmerge will attempt to
determine their type and codec from the content. This supported content
types are AAC (ADTS only) and AC-3. Fixes #1980.
mkvmerge: MP4 reader: fixed finding and parsing the `colr` atom if there are
more than one video extension atoms and the `colr` atom is not the first
one.
mkvmerge: MP4 reader: the `nclx` colour type of the `colr` atom is now
recognized, too (as defined by ISO/IEC 14496-12, "ISO base media format").
configure: fixed configure aborting if a `moc`, `uic`, `rcc` or `qmake`
binary is found, but the binary's version is too old. Fixes #1979.

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Changelog

Fixes:

Fixed error with SQLite when files have apostrophe(s) in the file name.
Fixed error when extracting simple chapters.
Added back Send To menu in portable versions.
Fixed error detection for chapters, tags and cues.
Fixed log_rotate.exe hanging in some situations.
Fixed json formatting when extracting time codes with default file naming options.

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Changelog

Changes:

Added [TrackType#] placeholder.
Added auto recovery when MKVCleaver hangs.
Added notification when MKVCleaver cannot connect to the Internet.
Minor logging changes.

Fixes:

Fixed “Check for Updates” was not following what’s in the ini file.
Fixed MKVCleaver error when extracting by selecting tracks in the left pane.
Fixed [Track#] being replaced by incorrect numbers in some cases.

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Changelog

## New features and enhancements

* mkvmerge: MPEG TS reader: information about multiple programs will be output
  as container properties during verbose/JSON identification. See #1990 for
  the use case.
* MKVToolNix GUI: multiplex tool: added a column "program" to the tracks
  list. Certain container types such as MPEG transport streams can contain
  multiple programs. The new column will contain the service name (think TV
  station names such as "arte HD") for such streams. Implements the GUI part
  of #1990.
* MKVToolNix GUI: multiplex tool: the dialog asking the user what to do with
  dropped files (add to current settings, add to new settings etc.) now
  remembers the previous decision and defaults to it the next time it's
  shown. Implements #1997.
* MKVToolNix GUI: tabs can now be closed by pressing the middle mouse
  button. Implements #1998.

## Bug fixes

* mkvmerge: MP4 reader: MPEG-1/2 video read from MP4 files was written with an
  invalid codec ID (e.g. `V_MPEG7`) in certain cases. Fixes #1995.
* mkvmerge: MPEG PS reader: made the file type detection less strict so that
  garbage at the start of the file doesn't prevent detection. Fixes #2008.
* mkvmerge: MPEG PS reader: (E-)AC-3 tracks were not detected if the very
  first packet for that track didn't contain a full (E-)AC-3 frame. Fixes
  #2016.
* mkvmerge: MPEG TS reader: fixed mkvmerge not detecting all tracks in MPEG
  transport streams containing multiple programs. Fixes one part of #1990.
* mkvmerge: MPEG TS reader: fixed track content being broken for some tracks
  read from MPEG transport streams containing multiple programs. Fixes another
  part of #1990.
* mkvmerge: JSON identification: the `stream_id` and `sub_stream_id` track
  properties were output as hexadecimal strings instead of unsigned
  integers. As the `ts_pid` track property was only used for MPEG transport
  streams, its value is now output as `stream_id` instead, and the `ts_pid`
  property has been removed. The JSON schema version has been bumped to 8 due
  to this change.
* mkvmerge: fixed a crash when appending video tracks where one track has a
  CodecPrivate member and the other one doesn't.
* mkvmerge: track statistics tags: the `NUMBER_OF_BYTES` tag is supposed to
  contain the number of bytes in a track before any of the content encoding
  schemes such as lossless compression is applied; however, mkvmerge was
  wrongfully using the number of bytes after the schemes had been
  applied. Fixes #2022.
* mkvmerge: CLPI & MPLS parsers: MPLS and CLPI files with version number
  `0300` as used on Ultra HD Blu-ray Discs are now accepted as well. Fixes
  #2010.
* mkvpropedit: fixed a crash when the selector used for `--tags` is invalid.
* MKVToolNix GUI: fixed computation of value of total progress bar for multiple
  jobs running. Fixes #2005.
* MKVToolNix GUI: multiplexer, adding new attachments: when the GUI checks if
  there's an attachment with the same name it will now disregard disabled
  attached files. Fixes #2001.
* Debian/Ubuntu packaging: during a `dpkg-buildpackage` run the test suite was
  failing when a non-English locale was active and MKVToolNix packages had
  already been installed. Fixes #2011.

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Changelog

New features and enhancements:

mkvmerge: AAC: implemented support for AAC with 960 samples per frame. Implements #2031.
mkvmerge: identification: if the encoding/character set of a text subtitle track is known (e.g. because a byte order mark is present in the file), then it will be output during identification as the `encoding` property. Implements mkvmerge's part of #2053.
mkvmerge: WAV reader: added support for Wave64 files. Implements #2042.
mkvmerge, mkvpropedit, MKVToolNix GUI (chapter editor): added support for chapters in WebM files that is spec-compliant by removing all tag elements not supported by the WebM spec. Implements #2002.
mkvpropedit: added support for tags in WebM files that is spec-compliant by removing all tag elements not supported by the WebM spec.
MKVToolNix GUI: multiplexer: if the encoding/character set of a subtitle track cannot be changed, the GUI will deactivate the "subtitle character set" drop-down box and ignore changes to it when multiple tracks are selected. Additionally, if the track's encoding is known and cannot be changed (e.g. due to a byte order mark in the file), that encoding will be selected in the drop down box automatically. Both changes signal to the user that she doesn't have to take care of the encoding herself. Implements the GUI's part of 2053.
MKVToolNix GUI: chapter editor: added a function to the "additional modifications" dialog for calculating and setting the end timestamps. Implements #1887.
MKVToolNix GUI: changed the shortcuts for switching between the various tools from `Alt+number` (e.g. `Alt+1` for the multiplexer tool) to Ctrl+Alt+number` in order to avoid clashing with Windows' input method for arbitrary characters (pressing and holding `Alt` and typing the codepoint on the number pad). Implements #2034.
MKVToolNix GUI: added a "Window" menu and entries with shortcuts for selecting the next (`Ctrl+F6`) respectively previous tab (`Ctrl+Shift+F6`) in the current tool. Implements #1972, #2032.
MKVToolNix GUI: on Windows the GUI will now determine the default font to use by querying Windows for the default UI/message box font instead of using the hardcoded `Segoe UI`. This might fix issues such as #2003 (unverified). translations: added a Romanian translation of the programs by Daniel (see AUTHORS).

Bug fixes:

mkvmerge: AVC/h.264 parser: fixed wrong frame order & timestamp calculation in certain situations when SPS (sequence parameter sets) or PPS (picture parameter sets) change mid-stream. Fixes #2028.
mkvmerge: HEVC/h.265 parser: fixed wrong frame order & timestamp calculation in certain situations when SPS (sequence parameter sets) or PPS (picture parameter sets) change mid-stream. This is the HEVC/h.265 equivalent of 2028.
mkvmerge: MPEG-1/-2 video: the "remove stuffing bytes" feature introduced in v5.8.0 (feature request #734) was broken. In a lot of situations it did not detect the end of a slice correctly and removed 0 bytes that were actually part of the slice structure. Often there were no visual problems as decoders were able to ignore such errors, but in other cases there are visual artifacts upon decoding. As detecting the slice end properly requires parsing the whole slice structure, this feature has been removed again. Fixes #2045.
mkvmerge: MPEG PS reader: fixed mkvmerge trying to handle an "end" code the same way as a "program stream map" code.
mkvmerge: MPEG TS reader: mkvmerge won't emit warnings if the system's iconv` library doesn't support the ISO 6937 character set. Fixes #2023.
mkvmerge: when appending fails the error message details (e.g. "the number of channels differs: 1 and 2") were often not output. Fixes #2046.
MKVToolNix GUI: multiplex tool: implemented a workaround for a crash that could occur during drag & drop if at least one of the columns is hidden. Fixes #2009.
MKVToolNix GUI: multiplex tool: appended tracks can no longer be enabled selected for multiplexing) if the track they're going to be appended to is not enabled. Fixes #2039.
MKVToolNix GUI: multiplex tool: if the GUI is set to ensure unique output file names, it will now verify that right before starting to multiplex/adding the job to the queue, too. Fixes #2052.
MKVToolNix GUI: fixed the total progress reverting to 0% instead of staying at 100% when all jobs have finished. This was introduced by the attempt at fixing the computation of the value of total progress bar for multiple jobs running. Fixes #2005. configure: fixed DocBook detection if `/bin/sh` is `dash`.

Build system changes:

Boost: the minimum required version has been bumped to 1.49.0. Earlier releases fail to build on my current systems and will therefore not be supported anymore. configure: when looking for the "nlohnmann JSON" include files configure will now try the path "nlohmann/json.hpp" first, "json.hpp" second (only "json.hpp" was tried before). If neither is found, the copy included in the MKVToolNix sources will be used. Fixes #2048.

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Important notes:

mkvmerge, mkvpropedit, GUI's header and chapter editors: the programs will
no longer add most missing Matroska elements that are mandatory but have a
default value in the Matroska specification (e.g. the `TagLanguage` element
with a value of `und` if it isn't present in its `SimpleTag` parent). Due to
this change libEBML v1.3.5 is now required.

New features and enhancements:

MKVToolNix GUI: multiplex tool: added a new entry to the "source files"
context menu labeled "Set destination file name from selected file's
name". It will force the GUI to consider the selected file to be the
reference for automatically setting the file name, no matter which file was
originally added as the first file. It will also force setting the
destination file name once if automatic destination file name generation is
turned off in the preferences. Implements part of #2058.
MKVToolNix GUI: multiplex tool: added an option in the preferences on
"Multiplexer" → "Output" labeled "Only use the first source file that
contains a video track". If enabled, only source files containing video
tracks will be used for setting the destination file name. Other files that
are added are ignore. Implements the rest of #2058.
MKVToolNix GUI: header editor: added support for editing the video colour
attributes. Implements the second half of #2038.
MKVToolNix GUI: header editor: added support for the "video projection"
track header attributes. Part of the implementation of #2064.
MKVToolNix GUI: job queue: selected jobs can now be move up and down by
pressing the `Ctrl+Up` and `Ctrl+Down` keys. Additionally, push buttons to
move them up & down are shown if the corresponding option is enabled in the
preferences. Implements #2060.
mkvmerge: added support for the "video projection" track header
attributes. Part of the implementation of #2064.
mkvinfo: added support for the "video projection" track header
attributes. Part of the implementation of #2064.
mkvpropedit: added support for editing the video colour
attributes. Implements one half of #2038.
mkvpropedit: added support for the "video projection" track header
attributes. Part of the implementation of #2064.

Bug fixes:

all: selecting the program's language (e.g. via the `--ui-language`
command-line option or via the GUI's preferences) did not work on Linux &
Unix if the `LANGUAGE` environment variable was set and didn't include the
desired language. Fixes #2070.
MKVToolNix GUI: removed the keyboard shortcuts for switching between the
different tools (e.g. `Ctrl+Alt+1` for the multiplexer). They overlapped
with basic functionality on keyboards that use an `AltGr` key, e.g. German
ones, where `AltGr+7` emits `{`. As `AltGr+key` is implemented as
`Ctrl+Alt+key` under the hood, this means that `AltGr+7` is really
`Ctrl+Alt+7` which the GUI now took to mean "switch to the job queue"
instead of "insert `{`". Fixes #2056.
MKVToolNix GUI: header editor: after saving the file the GUI wasn't updating
its internal file modification timestamp. That lead to the GUI wrongfully
claiming that the file had been modified externally when the user wanted to
save the file once more, requiring a reload of the file losing all
modifications made since saving the first time.
mkvmerge: DTS handling: some source files provide timestamps for audio
tracks only once every `n` audio frames. In such situations mkvmerge was
buffering too much data resulting in a single gap in the timestamps of one
frame duration after frame number `n - 1` (the second audio timestamp read
from the source file was used one output frame too early). Fixes #2071.
mkvinfo: fixed a null pointer dereference if an `EbmlBinary` element's data
pointer is a null pointer. Fixes #2072.

Build system changes:

configure: added option `--disable-update-check`. If given, the code
checking online for available updates will be disabled. The update check is
enabled and included in the GUI by default.
libEBML v1.3.5 is now required.

Other changes:

mkvmerge: the option `--colour-matrix` has been renamed to
`--colour-matrix-coefficients` in order to match the specification more
closely. The old option name will continue to be recognized as well.

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# Version 16.0.0 "Protest" 2017-09-30

## New features and enhancements

* mkvmerge: MP4 reader: added support for Vorbis. Implements #2093.

## Bug fixes

* configure: the checks for libEBML and libMatroska have been fixed to require
  libEBML 1.3.5 and libMatroska 1.4.7 as intended.

* mkvmerge: AAC reader: mkvmerge will now emit an error message for AAC files
  whose header fields imply a sampling frequency or number of channels
  of 0. See #2107.
* mkvmerge: AVC/h.264 ES parser: fixed the calculation of reference
  information for P and B frames. This also fixes some P frames being marked
  as B frames and vice versa.
* mkvmerge: AVC/h.264 ES parser: only non-key frames that have the NALU header
  field `nal_ref_idc` set to 0 will be marked as "discardable" in
  `SimpleBlock` elements. Other half of the fix for #2047.
* mkvmerge: HEVC/h.265: the generation of the HEVCC structure stored in
  `CodecPrivate` was wrong in two places: 1. the position of the number of
  sub-layers was swapped with reserved bits and 2. the VPS/SPS/PPS/SEI lists
  did not start with a reserved 1 bit.
* mkvmerge: output: the `doc type version` will be set at least to 2 if
  certain elements are written (`CodecState`, `CueCodecState`,
  `FlagInterlaced`).
* mkvmerge: output: the track header attributes `MinCache` and `MaxCache` will not be
  written anymore. Fixes #2079.
* mkvmerge: Matroska reader: the "key" and "discardable" flags of SimpleBlock
  elements will be kept as they are. Partial fix for #2047.
* mkvmerge: Matroska reader: if present in the file, the "white colour
  coordinate x" track header attribute was written to both "white colour
  coordinate x" and "white colour coordinate y" in the output file.
* mkvmerge: Opus output: mkvmerge will now put all frames with discard padding
  into their own block group. Fixes #2100.
* MKVToolNix GUI: header editor: removed the check for external modification
  when saving the file. Fixes #2097.
* MKVToolNix GUI: job queue: fixed calculation of total progress when
  automatic removal of completed is enabled. Fixes #2105.

## Build system changes

* libEBML v1.3.5 and libMatroska v1.4.8 are now required. In fact v15.0.0
  already requires libEBML v1.3.5 and libMatroska v1.4.7 but did not include
  proper version checks for them (nor was there a NEWS.md entry for the new
  libMatroska requirement). New is the requirement for libMatroska v1.4.8 due
  to it fixing writing block groups for tracks with the track number 128 (see
  #2103).

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## Important notes

* The word “timecode” has been changed to “timestamp” everywhere it was
used in MKVToolNix. This affects program output (including mkvinfo’s), GUI
controls, command line parameters (e.g. `mkvmerge –timestamp-scale …`) and
file formats. All programs remain backwards compatible insofar as they still
accept “timecode” in all those places (e.g. `mkvmerge –timecode-scale …`).

The reason for the change is wrong usage. What both the Matroska specification
and MKVToolNix used “timecode” for is normally called a “timestamp” in audio &
video domains. A “timecode” on the other hand has a specific meaning. As the
Matroska specification is moving towards implementing real timecodes, it will
also move towards correcting the verbiage. MKVToolNix is following this
change.

* mkvextract’s command line interface has been changed to allow extraction of
multiple items at the same time. The first argument must now be the source
file’s name. All following arguments either set the mode (e.g. `tracks`) or
specify what to extract in the currently active mode.

Those items that were written to the standard output (chapters, tags and cue
sheets) are now always written to files instead. Therefore the respective
modes require an output file name.

For example, extracting two tracks, the chapters and the tags can be done
with the following command:

`mkvextract input.mkv tracks 0:video.h265 1:audio.aac chapters chapters.xml tags tags.xml`

The old interface (specifying the mode first and the source file name
second) remains working and supported. However, it is now deprecated and
will be removed at the end of 2018.

## New features and enhancements

* mkvmerge: AC-3: during identification regular AC-3 and E-AC-3 tracks will
now be identified differently for most container formats (exception: AVI,
Real Media, Ogg/OGM). The codec will be reported as `AC-3` for regular AC-3
and as `E-AC-3` for E-AC-3 tracks instead of the combined `AC-3/E-AC-3`.
* mkvextract: the command line interface has been changed to allow extraction
of multiple items at the same time. See section “Important notes” for details.

## Bug fixes

* mkvmerge: AAC ADTS parser: mkvmerge will now parse the
`program_config_element` if it is located at the start of an AAC frame in
order to determine the actual number of channels. This overrides invalid
channel configurations in the ADTS headers, for example. Fixes #2107.
* mkvmerge: fixed AC-3 being misdetected as encrypted MPEG program streams
under certain conditions.
* mkvmerge: Dirac: under certain conditions (e.g. only muxing a single Dirac
track without any other tracks) mkvmerge was always setting the pixel width
& height to 123. The frame rate was wrong, too.
* mkvmerge: E-AC-3 in Matroska: if AC-3 cores and their corresponding E-AC-3
extension are located in two different Matroska blocks, then mkvmerge will
now re-assemble them into a single block and only use the first block’s
timestamp.
* mkvmerge: SRT reader: fixed calculating the duration of entries starting
with at a negative timestamp.
* mkvmerge: VC-1: under certain conditions (e.g. only muxing a single VC-1
track without any other tracks) mkvmerge was always setting the pixel width
& height to 123. The frame rate was wrong, too. Fixes #2113.
* mkvmerge: command line options: an error message will be output if the
single-value-form of the `–sync` option is used and it isn’t a number
(e.g. `–sync 0:asd`). Fixes #2121.
* mkvpropedit, GUI’s header editor: both programs will now show proper error
messages instead of crashing when certain kinds of data corruption is found
when reading a file. Fixes #2115.

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