MKVToolNix v18.0.0 released

Welcome to release v18.0.0 of MKVToolNix. This is just a smallish bug fix release which also contains a couple of performance improvements.

There were no changes for package maintainers.

You can download the source code or one of the binaries. The Windows and macOS binaries are available already. The Linux binaries are stil being built and will be available of the course of the next couple of hours.

Here are the NEWS since the previous release:

New features and enhancements

  • build system: when building with clang v3.8.0 or newer, configure will no longer restrict optimization flags to -O1 and use -O3 again (older versions of clang suffered from excessive memory usage with higher optimization levels).
  • build system: when building with mingw 7.2.0 or newer, configure will no longer restrict optimization flags to -O2 and use -O3 again (older versions of mingw suffered from bugs such as segmentation faults with higher optimization levels).
  • build system: stack protection is enabled when building with clang 3.5.0 or newer on all platforms.
  • mkvmerge: AVC & HEVC ES parsers: performance improvements by copying much less memory around.
  • mkvmerge: tags: reintroduced a workaround for non-compliant files with tags that do not contain the mandatory SimpleTag element. This workaround was removed during code refactoring in release v15.0.0.
  • GUI: multiplexer: the "AAC is SBR/HE-AAC/AAC+" checkbox in the "audio properties" section will be disabled if the functionality is not implemented for the selected track’s codec & container.
  • GUI: multiplexer: the "reduce to core" checkbox in the "audio properties" section will be disabled if the functionality is not implemented for the selected track’s codec. See #2134.

Bug fixes

  • mkvmerge: AAC ADTS parser: fixed interpretation of the channel_configuration header element for ADTS files that do not contain a program configuration element: value 7 means 7.1 channels. Fixes #2151.
  • mkvmerge: Matroska identification: the date_local and date_utc attributes will only be output if the identified Matroska file actually contains the "date" header field.
  • mkvmerge: WebVTT: mkvmerge did not recognize timestamp lines if the hours components were absent. Fixes #2139.
  • mkvpropedit, GUI’s header editor: the date header field won’t be added automatically anymore whenever the segment info section is edited and the date element is either deleted or not present in the first place. Fixes #2143.

Have fun :)

MKVToolNix v17.0.0 released

Here’s release v17.0.0 of MKVToolNix. The rather short timespan since the previous release is due to a nasty bug in the VC-1 code that a lot of people are hitting with v16.

Other important changes are the overhaul of mkvextract’s command line interface and all programs using the word “timestamp” instead of “timecode” (which also affects mkvmerge’s command line interface). See the news below for more information.

There were no changes for package maintainers.

You can download the source code or one of the binaries. The Windows and macOS binaries are available already. The Linux binaries are stil being built and will be available of the course of the next couple of hours.

Here are the NEWS since the previous release:

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.

Have fun :)

MKVToolNix v16.0.0 released

I’ve just released v16.0.0 of MKVToolNix. This release is mostly a bug fix release.

Changes for package maintainers: libMatroska v1.4.8 is now required.

You can download the source code or one of the binaries. The Windows and macOS binaries have been built already and are available for download. The Linux binaries will be available later today.

Here are the NEWS since the previous release:

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).

Have fun :)

MKVToolNix v15.0.0 released

Here’s the brand new version 15.0.0 of MKVToolNix. A lot of work has gone into improving support for new track header elements important for video archival purposes. A couple of bugs have been fixed, too, as usual.

Changes for package maintainers: libEBML v1.3.5 is now required. An option has been added to configure for compiling without the code that checks online for new releases. See below for details.

Deprecation warning

This is a reminder that certain features having been deprecated since v9.7.0. They’re scheduled to be removed in the first release of 2018. These features are:

  • mkvmerge: the options “–identify-verbose”, “–identify-for-gui”, “–identify-for-mmg” and “–identification-format verbose” (use “–identification-format json –identify” or its short form “-J” instead)
  • all command line tools: the old, proprietary format used for option files (use JSON option files instead)

You can download the source code or one of the binaries. The Windows and macOS binaries have been built already and are available for download. The Linux binaries will be available later today.

Here are the NEWS since the previous release:

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.

Have fun :)