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 :)